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ior_foot_angles_test

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  • *Hallux Definition\\|1. Create RHal Segment:

    <HTML><ol></HTML>
    <HTML><li></HTML>In the **Segments     tab, select RHal in the Segment Name box.


  • Select Kinematic Only


  • Click on the Create Segment button.


  • In the RHal tab, enter these values:

    |

       Define Proximal Joint and Radius
       Lateral: None     Joint: RFMH     Medial: None     
       Radius: 0.1



       Define Distal Joint and Radius
       Lateral: None     Joint: RPM     Medial: None     
       Radius: 0.1



       Extra Target to Define Orientation
       Location: Lateral     RHal_Vert



       Select Tracking Targets:
         RHal_Vert, RFMH, RPM

    ||


  • Click on Build Model.


  • Click on Close Tab before proceeding.

    | caption|




    |2. Modify the Segment Coordinate System:


    1. Define the Segment Orientation as:

      |

         A/P Axis: -Z
         Distal to Proximal: -X

      ||

      | caption|

      The image to the right (and all other images in this tutorial) show a mediolateral view of the segment coordinate system after it has been modified.|

      Metatarsus (Met)

      Segment Definition:

      The FM2 landmark is projected onto the plane defined by the FM1, FM5, and SMB landmarks. The line from the SMB to FM2 projection are used to define the X axis (A/P) axis of the Met segment. The sagittal axis (Z axis) is along the plane defined by the FM1, FM5, and SMB targets.

      The FMB target is not used to define the segment, but it will be used to track the segment (in addition to the other targets).

      Joint Angles:

      * Mid-Met Angle
      * Cal-Met Angle
      * F2Pt[1]/ Y component of the Met-Hal Angle[2]
      * F2Ps[1]/ Z component of the Met-Hal Angle[2]

      Planar Angles:

      * S2F is projected onto the plane of the Met segment
      * S2V is projected onto the plane of the Met segment       		caption
      Metatarsus Landmarks
      1. Create RMET_DIST:


      1. Click Landmarks button


      2. Click Add New Landmark button


      3. Create Landmark: RMET_DIST

           Landmark Name: RMET_DIST



           Define Orientation Using:
           Starting Point: RFMH
           Ending Point: RVMH
           Lateral Object: RSMB
           Project From: RSMH


      4. Do NOT Check: Offset by Percent (1.0 = 100%)


      5. Check: Calibration Only Landmark

        		caption
        Metatarsus Definition
        1. Create RMet Segment:


        1. In the Segments tab, select RMet in the Segment Name box.


        2. Select Kinematic Only


        3. Click on the Create Segment button.


        4. In the RMet tab, enter these values:

             Define Proximal Joint and Radius
             Lateral: None     Joint: RSMB     Medial: None     
             Radius: 0.1



             Define Distal Joint and Radius
             Lateral: None     Joint: RMET_DIST     Medial: None     
             Radius: 0.1



             Extra Target to Define Orientation
             Location: Medial     RFMH



             Select Tracking Targets:
               RFMB, RFMH, RSMB, RSMH, RVMH


        5. Click on Build Model.


        6. Click on Close Tab before proceeding.

          		caption




          		2. Modify the Segment Coordinate System:


          1. Define the Segment Orientation as:

               A/P Axis: +Y
               Distal to Proximal: -X

            		 caption

            The image to the right (and all other images in this tutorial) show a mediolateral view of the segment coordinate system after it has been modified.

            Mid-foot (Mid)

            Segment Definition:

            The midpoint between the TN and VMB targets is used to define the origin of the Mid segment. The A/P (X) axis is defined along the line from this midpoint to the SMB target. The sagittal (Z) axis is along the plane defined by the ID, TN and SMB targets.

            Joint Angles:

            * Cal-Mid Angle
            * Mid-Met Angle

            Planar Angles:

            * Not used for planar angles.             		caption
            Mid-foot Landmarks
            1. Create RID Joint Center:


            1. Click Landmarks button


            2. Click Add New Landmark button


            3. Create Landmark: RID

                 Landmark Name: RID



                 Define Orientation Using:
                 Starting Point: RTN
                 Ending Point: RVMB


            4. Offset Using the Following AXIAL Offset: 0.5


            5. Check: Offset by Percent (1.0 = 100%)


            6. Check: Calibration Only Landmark

              		caption
              Mid-foot Definition
              1. Create RMid Segment:


              1. In the Segments tab, select RMid in the Segment Name box.


              2. Select Kinematic Only.


              3. Click on the Create Segment button.


              4. In the RMid tab, enter these values:

                   Define Proximal Joint and Radius
                   Lateral: None     Joint: RID     Medial: None     
                   Radius: 0.1



                   Define Distal Joint and Radius
                   Lateral: None     Joint: RSMB     Medial: None     
                   Radius: 0.1



                   Extra Target to Define Orientation
                   Location: Medial     RTN



                   Select Tracking Targets:
                     RSMB, RTN, RVMB


              5. Click on Build Model.


              6. Click on Close Tab before proceeding.

                		caption




                		2. Modify the Segment Coordinate System:


                1. Define the Segment Orientation as:

                     A/P Axis: +Y
                     Distal to Proximal: -X

                  		 caption

                  Calcaneus (Cal)

                  Segment Definition:

                  The origin is at the FCP target. The A/P (X) axis is along the line from the FCP to midpoint of the ST and PT targets (IC landmark). The sagittal (Z) axis is along the plane defined by the FCP, ST and TN targets.

                  Joint Angles:

                  * Sha-Cal Angle
                  * Cal-Mid Angle Z rotation & Y Rotation*
                  * Cal-Met Angle

                  * The 2014 paper[2] modified the definition of inversion/eversion for the calcaneus segment relative to the shank segment. This is now calculated as the Sha_Cal_Fro angle which is a four point planar angle.

                  Planar Angles:

                  * No planar angles                   		caption
                  Calcaneus Landmarks
                  1. Create RIC Joint Center:


                  1. Click Landmarks button


                  2. Click Add New Landmark button


                  3. Create Landmark: RIC

                       Landmark Name: RIC



                       Define Orientation Using:
                       Starting Point: RST
                       Ending Point: RPT


                  4. Offset Using the Following AXIAL Offset: 0.5


                  5. Check: Offset by Percent (1.0 = 100%)


                  6. Check: Calibration Only Landmark

                    		caption
                    Calcaneus Definition
                    1. Create RCal Segment:


                    1. In the Segments tab, select RCal in the Segment Name box.


                    2. Select Kinematic Only


                    3. Click on the Create Segment button.


                    4. In the RCal tab, enter these values:

                         Define Proximal Joint and Radius
                         Lateral: None     Joint: RFCP     Medial: None     
                         Radius: 0.1



                         Define Distal Joint and Radius
                         Lateral: None     Joint: RIC     Medial: None     
                         Radius: 0.1



                         Extra Target to Define Orientation
                         Location: Medial     RST



                         Select Tracking Targets:
                           RFCP, RPT, RST


                    5. Click on Build Model.


                    6. Click on Close Tab before proceeding.

                      		caption




                      		2. Modify the Segment Coordinate System:


                      1. Define the Segment Orientation as:

                           A/P Axis: +Y
                           Distal to Proximal: -X

                        		 caption

                        Virtual Foot (Foo)

                        Segment Definition:

                        The origin is at the FCP target. The A/P (X) axis is along the line from the FCP to RFT_DIST landmark. The sagittal (Z) axis is along the plane defined by the FCP, FMH and VMH targets.

                        This foot segment should be set to “kinematic only” since the origin is not at the point of rotation (the mid point of the RIMM & RLM targets. The IORFoot analysis does not calculate kinetics, so no kinetic foot segment is described in this model. To create gait events, you will need a kinetic foot segment. An example of a kinetic foot segment is created in the sample download files for this tutorial.                         		caption
                        Foot Landmarks
                        1. Create RFT_DIST:


                        1. Click Landmarks button


                        2. Click Add New Landmark button


                        3. Create Landmark: RFT_DIST

                             Landmark Name: RFT_DIST



                             Define Orientation Using:
                             Starting Point: RCA
                             Ending Point: RFMH
                             Lateral Object: RVMH
                             Project From: RSMH


                        4. Do NOT Check: Offset by Percent (1.0 = 100%)


                        5. Check: Calibration Only Landmark

                          		caption
                          Foot Definition
                          1. Create Right Virtual Foot Segment:


                          1. In the Segments tab, select Right Virtual Foot in the Segment Name box.


                          2. Select Kinematic Only


                          3. Click on the Create Segment button.


                          4. In the Right Virtual Foot tab, enter these values:

                               Define Proximal Joint and Radius
                               Lateral: None     Joint: RFCP     Medial: None     
                               Radius: 0.5*DISTANCE(RST,RPT)



                               Define Distal Joint and Radius
                               Lateral: None     Joint: RFT_DIST     Medial: None     
                               Radius: 0.5*DISTANCE(RFMH,RVMH)



                               Extra Target to Define Orientation
                               Location: Medial     RFMH



                               Select Tracking Targets:
                                 RFCP, RFMH, RVMH


                          5. Click on Build Model.


                          6. Click on Close Tab before proceeding.

                            		caption




                            		2. Modify the Segment Coordinate System:


                            1. Define the Segment Orientation as:

                                 A/P Axis: +Y
                                 Distal to Proximal: -X

                              		 caption

                              Shank (Sha)

                              Shank Landmarks
                              1. Create RIM:


                              1. Click Landmarks button


                              2. Click Add New Landmark button


                              3. Create Landmark: RIM

                                   Landmark Name: RIM



                                   Define Orientation Using:
                                   Starting Point: RLM
                                   Ending Point: RMM


                              4. Offset Using the Following AXIAL Offset: 0.5


                              5. Check: Offset by Percent (1.0 = 100%)


                              6. Check: Calibration Only Landmark

                                		caption

                                		2. Create RSK_PROX:


                                1. Click Landmarks button


                                2. Click Add New Landmark button


                                3. Create Landmark: RSK_PROX

                                     Landmark Name: RSK_PROX



                                     Define Orientation Using:
                                     Starting Point: RIM
                                     Ending Point: RLM
                                     Lateral Object: RHF
                                     Project From: RTT


                                4. Do NOT Check: Offset by Percent (1.0 = 100%)


                                5. Check: Calibration Only Landmark

                                  		caption
                                  Shank Definition
                                  1. Create Right Shank Segment:


                                  1. In the Segments tab, select Right Shank in the Segment Name box.


                                  2. Click on the Create Segment button.


                                  3. In the Right Shank tab, enter these values:

                                       Define Proximal Joint and Radius
                                       Lateral: None     Joint: RSK_PROX     Medial: None     
                                       Radius: DISTANCE(RSK_PROX,RHF)



                                       Define Distal Joint and Radius
                                       Lateral: None     Joint: RIM     Medial: None     
                                       Radius: 0.5*DISTANCE(RLM,RMM)



                                       Extra Target to Define Orientation
                                       Location: Lateral     RLM



                                       Select Tracking Targets:
                                         RHF, RLM, RMM, RTT


                                  4. Click on Build Model.


                                  5. Click on Close Tab before proceeding.

                                    		caption




                                    		2. Modify the Segment Coordinate System:


                                    1. Define the Segment Orientation as:

                                         A/P Axis: +X
                                         Distal to Proximal: +Y

                                      		 caption

                                      Sagittal Planar Angles

                                      The F2G, S2G, and V2G angles are planar angles relative to the ground.

                                      The MLA angle is the angle between the Medial Longitudinal Arch/Navicular drop.

                                      F2G S2G and V2G Landmarks

                                      The F2G, S2G and V2G angles are calculated in the plane orthogonal to the ground. These landmarks will need to be projected onto the ground. To project landmarks onto the ground, the Lab_O, Lab_X and Lab_Y landmarks will need to be created to identify the plane of the ground. IORProjectionOutline.png
                                      F2G S2G and V2G Landmarks
                                      1. Create Lab_O:


                                      1. Click Landmarks button


                                      2. Click Add New Landmark button


                                      3. Create Landmark: Lab_O

                                           Landmark Name: Lab_O


                                      4. Offset Using the Following ML/AP/AXIAL Offsets:
                                           X: 0.0    Y: 0.0    Z: 0.0


                                      5. Do NOT Check: Offset by Percent (1.0 = 100%) (Meters when not checked)


                                      6. Do NOT Check: Calibration Only Landmark (Not generated for assigned motion file(s))

                                        		caption




                                        		2. Create Lab_X:


                                        1. Click Landmarks button


                                        2. Click Add New Landmark button


                                        3. Create Landmark: Lab_X

                                             Landmark Name: Lab_X


                                        4. Offset Using the Following ML/AP/AXIAL Offsets:
                                             X: 0.05    Y: 0.0    Z: 0.0


                                        5. Do NOT Check: Offset by Percent (1.0 = 100%) (Meters when not checked)


                                        6. Do NOT Check: Calibration Only Landmark (Not generated for assigned motion file(s))

                                          		caption




                                          		3. Create Lab_Y:


                                          1. Click Landmarks button


                                          2. Click Add New Landmark button


                                          3. Create Landmark: Lab_Y

                                               Landmark Name: Lab_Y


                                          4. Offset Using the Following ML/AP/AXIAL Offsets:
                                               X: 0.0    Y: 0.05    Z: 0.0


                                          5. Do NOT Check: Offset by Percent (1.0 = 100%) (Meters when not checked)


                                          6. Do NOT Check: Calibration Only Landmark (Not generated for assigned motion file(s))

                                            		caption




                                            		4. Create RFMH_proj:


                                            1. Click Landmarks button


                                            2. Click Add New Landmark button


                                            3. Create Landmark: RFMH_proj

                                                 Landmark Name: RFMH_proj



                                                 Define Orientation Using:
                                                 Starting Point: LAB_O
                                                 Ending Point: LAB_X
                                                 Lateral Object: LAB_Y
                                                 Project From: RFMH


                                            4. Do NOT Check: Offset by Percent (1.0 = 100%)


                                            5. Do NOT Check: Calibration Only Landmark

                                              		caption


                                              Create landmarks 7-17 by following the same format as the RFMH_proj landmark for: **

                                              *                                              *


                                              5. RFMB
                                              6. RSMH
                                              7. RSMB
                                              8. RVMH
                                              9. RVMB
                                              		 10. LFMH
                                              11. LFMB
                                              12. LSMH
                                              13. LSMB
                                              14. LVMH
                                              15. LVMB


                                              ****

                                              F2G Angle

                                              F2G Angle – 3D angle of the first metatarsus relative to the ground IOR F2GAngle.png
                                              F2G Definition
                                              1. Create RF2G planar angle:


                                              1. Define Resulting Signal Name: RF2G


                                              2. Calculate a 4 point angle between the following targets:

                                                   1 - TARGET::ORIGINAL::RFMB
                                                   2 - TARGET::ORIGINAL::RFMH
                                                   3 - TARGET::ORIGINAL::RFMH_proj
                                                   4 - TARGET::ORIGINAL::RFMB_proj
                                                Angle Direction: Right Hand Rule
                                                3D Space: Always 0 to 180 degrees

                                                		 PlanarAngle RF2G.png




                                                		2. Create LF2G planar angle:



                                                1. When defining the left signal, use same definitions as for the right angle

                                                  S2G Angle

                                                  S2G Angle – 3D angle of the second metatarsus relative to the ground IOR S2GAngle.png
                                                  S2G Definition
                                                  1. Create RS2G planar angle:


                                                  1. Define Resulting Signal Name: RS2G


                                                  2. Calculate a 4 point angle between the following targets:

                                                       1 - TARGET::ORIGINAL::RSMB
                                                       2 - TARGET::ORIGINAL::RSMH
                                                       3 - TARGET::ORIGINAL::RSMH_proj
                                                       4 - TARGET::ORIGINAL::RSMB_proj
                                                    Angle Direction: Right Hand Rule
                                                    3D Space: Always 0 to 180 degrees

                                                    		 PlanarAngle RS2G.png




                                                    		2. Create LS2G planar angle:



                                                    1. When defining the left signal, use same definitions as for the right angle

                                                      V2G Angle

                                                      V2G Angle – 3D angle of the fifth metatarsus relative to the ground IOR V2GAngle.png


                                                      V2G Definition
                                                      1. Create RV2G planar angle:


                                                      1. Define Resulting Signal Name: RV2G


                                                      2. Calculate a 4 point angle between the following targets:

                                                           1 - TARGET::ORIGINAL::RVMB
                                                           2 - TARGET::ORIGINAL::RVMH
                                                           3 - TARGET::ORIGINAL::RVMH_proj
                                                           4 - TARGET::ORIGINAL::RVMB_proj
                                                        Angle Direction: Right Hand Rule
                                                        3D Space: Always 0 to 180 degrees

                                                        		 PlanarAngle RV2G.png




                                                        		2. Create LV2G planar angle:



                                                        1. When defining the left signal, use same definitions as for the right angle

                                                          MLA Angle

                                                          MLA Angle – MLA Angle – Medial Longitudinal Arch/Navicular drop IOR MLAAngle.png
                                                          MLA Angle Landmarks
                                                          The MLA angle is calculated using the proximal heel target projected onto the ground, tracked using the calcaneus segment.

                                                          To accomplish this, two landmarks must be created:
                                                          1. The projection of the proximal heel target onto the ground
                                                          2. Track the proximal heel target projection using the calcaneus segment


                                                          To create these landmarks, the LAB_O, LAB_X and LAB_Y landmarks must be created and the calcaneus segment must be defined.

                                                          NOTE: The image for the MLA Angle shows the PROCESSED target folder being used for the signal definition. If you have used the ORIGINAL target data for the other planar angles, you should continue to use the ORIGINAL folder.

                                                          		1. Create RFCP_proj:


                                                          1. Click Landmarks button


                                                          2. Click Add New Landmark button


                                                          3. Create Landmark: RFCP_proj

                                                               Landmark Name: RFCP_proj



                                                               Define Orientation Using:
                                                               Starting Point: LAB_O
                                                               Ending Point: LAB_X
                                                               Lateral Object: LAB_Y
                                                               Project From: RFCP


                                                          4. Do NOT Check: Offset by Percent (1.0 = 100%)


                                                          5. Check: Calibration Only Landmark

                                                            		caption

                                                            		2. Create LFCP_proj:

                                                            - Use the same definition as the RFCP_proj, but use left side target

                                                            		3. Create RFCP_proj_track:


                                                            1. Click Landmarks button


                                                            2. Click Add New Landmark button


                                                            3. Create Landmark: RFCP_track

                                                                 Landmark Name: RFCP_proj_track



                                                                 Define Orientation Using:
                                                                 Starting Point: RFCP_proj
                                                                Click Existing Segment: RCal


                                                            4. Do NOT Check: Offset by Percent (1.0 = 100%)


                                                            5. Do NOT Check: Calibration Only Landmark

                                                              		caption

                                                              		4. Create LFCP_proj_track:

                                                              - Use the same definition as the RFCP_proj_track, but use left side landmark/segment


                                                              MLA Definition
                                                              1. Create RMLA planar angle:


                                                              1. Define Resulting Signal Name: RMLA


                                                              2. Calculate a 3 point angle between the following targets:

                                                                   1 - LANDMARK::ORIGINAL::RFCP_track
                                                                   2 - TARGET::ORIGINAL::RST
                                                                   3 - TARGET::ORIGINAL::RFMH
                                                                Angle Direction: Right Hand Rule
                                                                Use Range: -180 to 180 degrees
                                                                Projected onto Plane: XY



                                                                Note: The reference segment will need to be changed to RMF within the text option.



                                                                Command text should have the internal name (e.g. RMF) and not the display name “Right Virtual Foot”.

                                                                https:%%//%%www.c-motion.com/v3dwiki/index.php?title=Segment_Default_Names

                                                                		PlanarAngle RMLA 2014.png




                                                                		2. Create LMLA planar angle:



                                                                1. When defining the left signal, use same definitions as for the right angle

                                                                  Note: The reference segment will need to be changed to Left Virtual Foot within the text option.

                                                                  Transverse Planar Angles

                                                                  S2F Angle

                                                                  S2F Angle – Angle between the first and second metatarsus projected on to the transverse plane of the Met segment IOR S2FAngle.png
                                                                  S2F Definition
                                                                  1. Create RS2F planar angle:


                                                                  1. Define Resulting Signal Name: RS2F


                                                                  2. Calculate a 4 point angle between the following targets:

                                                                       1 - TARGET::ORIGINAL::RSMH
                                                                       2 - TARGET::ORIGINAL::RSMB
                                                                       3 - TARGET::ORIGINAL::RFMB
                                                                       4 - TARGET::ORIGINAL::RFMH
                                                                    Angle Direction: Right Hand Rule
                                                                    Use Range: -180 to 180 degrees
                                                                    Projected onto Plane: XZ



                                                                    Note: The reference segment will need to be changed to RMet within the text option.

                                                                    		 PlanarAngle RS2F.png




                                                                    		2. Create LS2F planar angle:



                                                                    1. When defining the left signal, use same definitions except set:

                                                                      Angle Direction: Left Hand Rule



                                                                      Note: The reference segment will need to be changed to LMet within the text option.

                                                                      S2V Angle

                                                                      S2V Angle – Angle between the fifth and second metatarsus projected on to the transverse plane of the Met segment IOR S2VAngle.png
                                                                      S2V Definition
                                                                      1. Create RS2V planar angle:


                                                                      1. Define Resulting Signal Name: RS2V


                                                                      2. Calculate a 4 point angle between the following targets:

                                                                           1 - TARGET::ORIGINAL::RSMH
                                                                           2 - TARGET::ORIGINAL::RSMB
                                                                           3 - TARGET::ORIGINAL::RVMB
                                                                           4 - TARGET::ORIGINAL::RVMH
                                                                        Angle Direction: Left Hand Rule
                                                                        Use Range: -180 to 180 degrees
                                                                        Projected onto Plane: XZ



                                                                        Note: The reference segment will need to be changed to RMet within the text option.

                                                                        		 PlanarAngle RS2V.png




                                                                        		2. Create LS2V planar angle:



                                                                        1. When defining the left signal, use same definitions except set:

                                                                          Angle Direction: Right Hand Rule



                                                                          Note: The reference segment will need to be changed to LMet within the text option.

                                                                          Calcaneus Inv/Eve

                                                                          Sha_Cal_Frontal Angle – Angle of the calcaneus segment relative to the shank segment

                                                                          This planar angle will be used to replace the inversion/eversion angle of the Sha_Cal joint angle

                                                                          0 degrees indicates the calcaneus is aligned with the shank.                                                                           		IOR Sha Cal FrontalAngle.png


                                                                          Sha_Cal_Frontal Landmarks
                                                                          1. Create RSK_PROX_track:


                                                                          1. Click Landmarks button


                                                                          2. Click Add New Landmark button


                                                                          3. Create Landmark: RSK_PROX_track

                                                                               Landmark Name: RSK_PROX_track



                                                                               Define Orientation Using:
                                                                              Click Existing Segment: RSK


                                                                          4. Offset Using the Following ML/AP/AXIAL Offsets:
                                                                               X: 0.0    Y: 0.0    Z: 0.0


                                                                          5. Check: Offset by Percent (1.0 = 100%)


                                                                          6. Do NOT Check: Calibration Only Landmark

                                                                            		caption

                                                                            		2. Create RSK_DIST_track:


                                                                            1. Click Landmarks button


                                                                            2. Click Add New Landmark button


                                                                            3. Create Landmark: RSK_DIST_track

                                                                                 Landmark Name: RSK_DIST_track



                                                                                 Define Orientation Using:
                                                                                Click Existing Segment: RSK


                                                                            4. Offset Using the Following ML/AP/AXIAL Offsets:
                                                                                 X: 0.0    Y: 0.0    Z: -1.0


                                                                            5. Check: Offset by Percent (1.0 = 100%)


                                                                            6. Do NOT Check: Calibration Only Landmark

                                                                              		caption




                                                                              		3. Create RFCD_track Joint Center:


                                                                              1. Click Landmarks button


                                                                              2. Click Add New Landmark button


                                                                              3. Create Landmark: RFCD_track

                                                                                   Landmark Name: RFCD_track



                                                                                   Define Orientation Using:
                                                                                  Click Existing Segment: RCal


                                                                              4. Offset to Existing Calibration Target or Landmark: RFCD


                                                                              5. Do NOT Check: Offset by Percent (1.0 = 100%)


                                                                              6. Do NOT Check: Calibration Only Landmark

                                                                                		caption
                                                                                Sha_Cal_Frontal Definition
                                                                                1. Create RSha_Cal_Fro planar angle:


                                                                                1. Define Resulting Signal Name: RSha_Cal_Fro


                                                                                2. Calculate a 4 point angle between the following targets:

                                                                                     1 - LANDMARK::ORIGINAL::RSK_PROX_TRACK
                                                                                     2 - LANDMARK::ORIGINAL::RSK_DIST_TRACK
                                                                                     3 - LANDMARK::ORIGINAL::RFCD_TRACK
                                                                                     4 - TARGET::ORIGINAL::RFCP
                                                                                  Angle Direction: Left Hand Rule
                                                                                  Use Range: -180 to 180 degrees
                                                                                  Projected onto Plane: YZ



                                                                                  Note: The reference segment will need to be changed to RSK within the text option.

                                                                                  		 PlanarAngle RSha Cal Fro.png




                                                                                  		2. Create LSha_Cal_Fro planar angle:



                                                                                  1. When defining the left signal, use same definitions except set:

                                                                                    Angle Direction: Right Hand Rule



                                                                                    Note: The reference segment will need to be changed to LSK within the text option.

                                                                                    Joint Angles

                                                                                    Joint Angle definitions for the:

                                                                                    • Sha_Foo_Angle
                                                                                    • Sha_Cal_Angle
                                                                                    • Cal_Mid_Angle
                                                                                    • Mid_Met_Angle
                                                                                    • Cal_Met_Angle
                                                                                    • Met_Hal_Angle

                                                                                    The Met_Hal_Angle calculations are used to replace the F2Ps & F2Pt planar angles from the 2007 paper[1].

                                                                                    Joint Angle Definitions
                                                                                    Sha_Foo_Angle

                                                                                    		1. Define the RSha_Foo_Angle:


                                                                                    1. Open the Compute Model Based dialog


                                                                                    2. Select JOINT_ANGLE from drop down list

                                                                                         Data Name: RSha_Foo_Angle



                                                                                         Segment: Right Virtual Foot
                                                                                         Reference Segment: Right Shank
                                                                                         Cardan Sequence: Z-X-Y


                                                                                    3. Use Negative:
                                                                                         X: TRUE    Y: TRUE    Z: FALSE

                                                                                      		caption

                                                                                      Sha_Cal_Angle

                                                                                      		1. Define the RSha_Cal_Angle:


                                                                                      1. Open the Compute Model Based dialog


                                                                                      2. Select JOINT_ANGLE from drop down list

                                                                                           Data Name: RSha_Cal_Angle



                                                                                           Segment: RCal
                                                                                           Reference Segment: Right Shank
                                                                                           Cardan Sequence: Z-X-Y


                                                                                      3. Use Negative:
                                                                                           X: TRUE    Y: TRUE    Z: FALSE

                                                                                        		caption

                                                                                        Cal_Mid_Angle

                                                                                        		1. Define the RCal_Mid_Angle:


                                                                                        1. Open the Compute Model Based dialog


                                                                                        2. Select JOINT_ANGLE from drop down list

                                                                                             Data Name: RCal_Mid_Angle



                                                                                             Segment: RMid
                                                                                             Reference Segment: RCal
                                                                                             Cardan Sequence: Z-X-Y


                                                                                        3. Use Negative:
                                                                                             X: TRUE    Y: TRUE    Z: FALSE

                                                                                          		caption

                                                                                          Mid_Met_Angle

                                                                                          		1. Define the RMid_Met_Angle:


                                                                                          1. Open the Compute Model Based dialog


                                                                                          2. Select JOINT_ANGLE from drop down list

                                                                                               Data Name: RMid_Met_Angle



                                                                                               Segment: RMet
                                                                                               Reference Segment: RMid
                                                                                               Cardan Sequence: Z-X-Y


                                                                                          3. Use Negative:
                                                                                               X: TRUE    Y: TRUE    Z: FALSE

                                                                                            		caption

                                                                                            Cal_Met_Angle




                                                                                            		1. Define the RCal_Met_Angle:


                                                                                            1. Open the Compute Model Based dialog


                                                                                            2. Select JOINT_ANGLE from drop down list

                                                                                                 Data Name: RCal_Met_Angle



                                                                                                 Segment: RMet
                                                                                                 Reference Segment: RCal
                                                                                                 Cardan Sequence: Z-X-Y


                                                                                            3. Use Negative:
                                                                                                 X: TRUE    Y: TRUE    Z: FALSE

                                                                                              		caption

                                                                                              Met_Hal_Angle

                                                                                              The Met_Hal angle is the angle of the hallux relative to the metarsus segment.

                                                                                              This sagittal and transverse angles of the Met_Hal_Angle angles create the F2Ps & F2Pt planar angles from the 2007 paper[1]. Since the targets used to track this segment are nearly colinear, useful information cannot be calculated from rotations in the coronal plane.

                                                                                              F2Ps - the angle between the lines FMH-PM and FMB-FMH projected onto the sagittal plane of the metatarsus
                                                                                              Represents - dorsiflexion of the first metatarso-phalangeal joint


                                                                                              F2Pt - the angle between the lines FMH-PM and FMB-FMH projected onto the transverse plane of the metatarsus
                                                                                              Represents - valgus of the first metatarsophalangeal joint


                                                                                              		1. Define the RMet_Hal_Angle:


                                                                                              1. Open the Compute Model Based dialog


                                                                                              2. Select JOINT_ANGLE from drop down list

                                                                                                   Data Name: RMet_Hal_Angle



                                                                                                   Segment: RHal
                                                                                                   Reference Segment: RMet
                                                                                                   Cardan Sequence: Z-X-Y


                                                                                              3. Use Negative:
                                                                                                   X: FALSE    Y: TRUE    Z: FALSE

                                                                                                		caption

                                                                                                References

                                                                                                1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 Leardini, A., M.G. Benedetti, L. Berti, D. Bettinelli, R. Nativo, and S. Giannini. “Rear-foot, Mid-foot and Fore-foot Motion during the Stance Phase of Gait.” Gait & Posture 25 (2007): 453-55
                                                                                                2. ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 Portinaro, N., A. Leardini, A. Panou, V. Monzani, and P. Caravaggi. “Modifying the Rizzoli foot model to improve the diagnosis of pes-planus: application to kinematics of feet in teenagers.” Journal of Foot and Ankle Research (2014)
                                                                                                3. ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 Serge van Sint Jan “Color Atlas of Skeletal Landmark Definitions: Guidelines for Reproducible Manual and Virtual Palpations” 2007 - Churchill Livingstone

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                                                                                                • This page was last edited on 9 November 2018, at 15:09.
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