M24: Other specific joint derangements

M24.3: Pathological dislocation and subluxation of joint, not elsewhere classified

Pathological dislocation and subluxation of a joint refer to medical conditions where the joint's alignment is abnormally altered, not associated with a specific disease classified elsewhere. A 'dislocation' implies that the joint surfaces have lost all contact with each other, while 'subluxation' means there is only partial contact between joint surfaces. These alterations can stem from a variety of reasons, such as trauma, long-term wear and tear, or from a pathological process like a disease or infection affecting the joint's stability. Symptoms often include joint pain, decreased mobility, and visible changes in the joint's appearance. These conditions can occur in any joint in the body but are more common in areas such as the shoulder, knee, hip, or fingers. Over time, if left untreated, these conditions may impede the joint's function, worsening pain and immobility.