What does knee locking feel like with a knee cartilage injury?

Cartilage inside or around the knee helps the joint move smoothly. An injured or irregular surface can irritate the joint and create catching, grinding, or a blocked sensation during bending. Some people can release the knee after changing position; others have a fixed loss of movement. Swelling may make the knee feel tight, while pain can cause protective muscle spasm. These sensations do not confirm one diagnosis, so the timing, injury mechanism, and examination matter.

Stop and avoid forcing the knee past the point where it catches. Sit down, keep the leg supported, and try only small, comfortable movements. Avoid kneeling, deep bending, twisting, and impact exercise until the cause has been assessed. If swelling is present, a cloth-wrapped cold pack may provide temporary comfort. Note whether the knee is stuck in flexion or extension and what activity preceded it.

Seek urgent care if the knee is completely stuck, you cannot bear weight, or a major injury caused sudden swelling or deformity. Immediate help is also needed for a cold or numb foot. Make a timely appointment when locking keeps returning, movement is becoming more limited, or pain and swelling interfere with ordinary walking.

Ask what type of cartilage injury could explain the catching, whether imaging is useful, and which movements should pause. Describe the exact range where the knee stops, how long each episode lasts, swelling, clicks, and any previous injury.