M24: Other specific joint derangements

M24.6: Ankylosis of joint

Ankylosis of the joint refers to a condition where the joint becomes stiff or fused, making movement restricted or impossible. The condition can occur in any joint in the body, including the spine, hip, knee, or fingers. It is often the result of chronic inflammation caused by conditions such as rheumatoid arthritis, psoriatic arthritis, or ankylosing spondylitis. The inflammation eventually leads to the formation of bone-like tissue within the joint space, thus "gluing" the joint together. Symptoms commonly include ongoing joint pain and limited range of motion in the affected joint, which can make everyday tasks challenging. The condition may also lead to visible changes in the joint, such as swelling or deformity. The disease progression might be gradual, with symptoms worsening over time as the joint becomes increasingly rigid or deformed.