What should you know about osteochondrose dissecans?

The condition affects a defined area of bone and the cartilage covering it. It can occur in a joint such as the knee, ankle or elbow. Symptoms may include activity-related pain, swelling, stiffness, reduced motion and catching. A stable area may cause aching without a loose fragment; an unstable fragment can make the joint feel blocked or unreliable. The symptoms are not specific, so an examination and imaging are needed to identify the affected joint and distinguish this problem from ligament, tendon or other cartilage conditions.

Arrange a musculoskeletal assessment when joint pain or swelling persists, particularly if sport or ordinary movement is becoming difficult. Reduce high-impact activity and avoid repeatedly testing a painful or catching joint until it has been assessed. Depending on the findings, care may include protected loading, a gradual exercise programme and Physiotherapy to restore mobility, strength and coordination. Follow-up checks can show whether the area is settling. If the cartilage surface is unstable or a fragment is loose, arthroscopic treatment or Cartilage Repair Surgery may be discussed.

Seek prompt review for repeated locking, a sudden inability to fully move the joint, increasing swelling, or pain that is worsening despite reduced activity. Get urgent help after major trauma or when the limb becomes cold, pale, numb or weak. A locked joint can have several causes, including a loose fragment, so it should be examined rather than forced open.

Ask which joint and surface are affected, whether the lesion is stable, and what the images show about the cartilage. Ask how much weight or impact is suitable, which exercises are safe, and when progress will be reassessed. If an operation is considered, discuss the aim of treatment, protection afterward and the signs that support a gradual return to activity.