hip_stability

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Hip Stability

  1. Determine YZ joint center positions of the respective limb’s Ankle, Knee, and Hip
  2. Calculate the respective differences in Y and Z between the Knee and Hip joint centers, and Ankle and Knee joint centers.
  3. Calculate segment angles for the thigh and shank segments by taking the inverse tangent of the Z difference over difference in Y.
  4. Calculate the Knee valgus angle by subtracting the thigh segment angle from the shank segment angle.
  5. Metric calculated for Step Down, Drop Jump, Lateral Shuffle, Triple Jump, Deceleration, Cut.
  • If Knee valgus angle is greater than -5 degrees, score is 2.
  • If Knee valgus angle is greater than -10 degrees & less than -5 degrees, score is 1.
  • If Knee valgus angle is less than -10 degrees, score is 0.
Score How Example
0 Knee valgus angle is less than -10 degrees Example
1 Knee valgus angle is greater than -10 degrees & less than -5 degrees Example
2 Knee valgus angle is greater than -5 degrees Example

  • hip_stability.1719859794.txt.gz
  • Last modified: 10 months ago
  • by ethan