Knee Ligament Injuries. Ligament injuries tend to happen suddenly when the knee either buckles or is forced into an awkward position. They can range from a partial tear that may h ...

A reflex is an automatic body movement that happens involuntarily in response to a stimulus. Healthcare providers sometimes test a person's reflexes as part of a routine or diagnostic exam.

In patients with knee osteoarthritis (OA), pain and dysfunction cause a reflex inhibition on the quadriceps femoral muscle, and quadriceps weakness could accelerate damage to knee cartilage.