2. What causes patellar dislocation?

A patellar dislocation occurs when something exerts excessive force on the knee joint, often due to a sudden change in direction that causes a sideways twisting motion in the joint. Direct trauma to the knee joint can also cause the dislocation. The type of movements that result in kneecap dislocation most commonly occur when a person plays a sport involving rotation of the knee, such as gymnastics, soccer, and hockey. Weakness or tightness in the surrounding tissues can contribute, as can malformations in the knee joint.

tissue Patellar dislocation

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