A sprain is an injury to a ligament caused by tearing of the fibers of the ligament. There are multiple ligaments involved in stabilizing the knee. These ligaments can be torn. Pain typically with walking, bearing weight, or moving the knee.

Irritated bands of muscle can result in aches, spasm, or tightness which can lead to pain over a remote area. This phenomenon is known as referred pain, caused by “trigger points” (irritated muscle bands) can often times can cause knee pain.