A week ago, I fell and fractured my patella in half and slightly displaced it. My doctor asked me to perform a straight leg raise, and I could not. So, he said my tendon, or "sleeve", was most likely ruptured and I would need surgery. Today, a week later, I went in for a follow up, and he asked me to perform a straight leg raise again, and this time I did, and he said I may not need surgery. However, I am in a hard cast from my upper thigh to my toes; so my question is, does being able to do the leg raise really mean anything? The cast is supporting my leg, it's my hip doing all the work.