Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Hip Stability ====== - Determine YZ joint center positions of the respective limb’s Ankle, Knee, and Hip - Calculate the respective differences in Y and Z between the Knee and Hip joint centers, and Ankle and Knee joint centers. - Calculate segment angles for the thigh and shank segments by taking the inverse tangent of the Z difference over difference in Y. - Calculate the Knee valgus angle by subtracting the thigh segment angle from the shank segment angle. - Metric calculated for Step Down, Drop Jump, Lateral Shuffle, Triple Jump, Deceleration, Cut. || Score || Scoring Definition || Significance|| || 0 || Knee valgus angle is less than -10 degrees || Significant Knee Valgus|| || 1 || Knee valgus angle is less than -5 degrees || Mild Knee Valgus|| || 2 || Knee valgus angle is greater than -5 degrees || No Knee Valgus|| {{ ::hip_stability.png?nolink&400 |}} hip_stability.txt Last modified: 10 months agoby ethan Log In