Locked knee occurs when a person cannot bend or straighten their knee. Causes include injury to the area and inflammation of the joint. The knees are two of the most important joints in the body.

Some individuals who have had anterior-cruciate-ligament reconstruction (ACLR), the kind of surgery often performed on ...

The diagnosis is usually clear from the history. Examination may disclose the patella still lying lateral to the joint, but more usually the dislocation has been reduced and there is a swollen knee ...