Today I got to take a patient through her exercises. This patient had a meniscus tear and needed surgery. This was due to weakness in her hamstrings and having really strong quads. She used the sled to fire her quads and work to get her hamstring at least close to the strength in her quads. If you watch the video you can see that her left hip goes higher than her right when she is pushing the sled. This is due to a limp. She is still recovering and learning her running technique again. They record her and play it in slow motion so that she can see how she is messing up and work to fix it. She is in the late part of her recovery so she is able to do more strenuous activities like this, but if her surgery was more recent she would be more limited in the exercises she would be able to perform. Here is the video of her pushing the sled: