Thanks for writing in. The knees are the most commonly injured part of the body. The largest joint
, the knee
is used for everything from standing up, sitting, to walking, running, etc. It's a weight-bearing joint that straightens, bends, twists and rotates. All this motion increases your risk of acute or overuse knee injuries.
As you already have a history of trauma there is a chance of ligament injury or meniscal tear or tendinitis.