Does knee cartilage injury cause knee locking?

A cartilage injury can create an irregular surface or a loose fragment that interferes with smooth knee movement. You may feel the knee catch, stick or stop before it fully straightens or bends. Pain, swelling, clicking and a sense of giving way can occur alongside the locking.

Most people with knee cartilage injury notice knee locking, but the symptom does not identify the injury on its own. Meniscus problems, loose bone or cartilage, and severe swelling can also restrict movement. A clinician uses the event history and examination to guide next steps.

Stop the activity that triggered the episode and avoid twisting, pivoting or forcing the knee straight. Rest it in a comfortable position and use support if walking feels unstable. Arrange an assessment, particularly when locking repeats, follows an injury, or prevents normal stairs and walking. Rehabilitation or other treatment depends on the structure involved and how much movement is limited.

Seek urgent care if the knee remains physically stuck, you cannot bear weight, there is a visible deformity, or swelling and pain appear suddenly after trauma. New numbness, a cold foot or severe worsening pain also needs immediate assessment. Do not force a locked joint through a painful range.

Ask whether the locking sounds mechanical or pain-related, which movements to avoid, whether imaging is needed, and what signs indicate that normal activity can resume.