This ligament ropes the thighbone to the shinbone and holds the kneecap in place. While the condition usually can be repaired with one operation, rehabilitation can take six months to a year. The faster these muscles tighten, the more protective they are. The hamstrings should lead the response, tightening first. The reason for this, they believe, primarily has to do with training.
Female athletes tend to work on their quadriceps more because they strengthen quickly.
They think their legs are getting stronger, but they are really not.