10 Symptoms of Knee Pain

7. Knee Lock

Knee lock occurs when the knee seems to be locked into place, unable to bend or straighten. A knee lock can be either a true knee lock or a pseudo knee lock. True knee locking is caused by a blockage — for example, a torn cartilage, a chip fracture or a meniscus tear. If this is the case, the individual may need surgery to remove the blockage. In the case of pseudo knee locking, there is no physical blockage, but rather a muscle spasm triggered by pain in the knee. A pseudo-lock is much more common, and a physician can examine the area to determine the cause. In most instances, painkillers can reduce pain and inflammation. Physical therapy can strengthen the knee to prevent future issues and improve mobility in the joint.