This is an incredibly talented athlete who I work with in the garage gym. She came to me with left knee pain, which continued after 6 weeks of PT. Despite a good routine in the weight room, her abductors tested weak so we started a targeted hip strengthening routine and then added run-specific hip strengthening. After three months, she has no weakness. Also important, in the first video, watch the instability in her right knee. This pattern was causing her left leg to land with more force, causing lateral and anterior knee pain. She had undiagnosed tibial torsion on the right and as part of gait retraining, learned to run with a toe out gait pattern. She continues to work on gait retraining but in the second video, you can see that she has corrected her right knee collapse.