The anatomy and clinical relevance of temporomandibular joint sounds

The temporomandibular joint (TMJ) is a uniquely complex, bi-articular joint that enables both rotational and translational mandibular movement. Joint sounds, such as clicking and crepitation, are among the most common clinical findings associated with temporomandibular disorders (TMDs) and frequently cause patient concern. Understanding the underlying anatomy of the TMJ, its fibrocartilaginous surfaces, articular disc morphology, and complex muscular attachments is essential to diagnosing the origin of these joint sounds. This article outlines the anatomy and clinical relevance of the TMJ to help clinicians adopt a conservative, evidence-based approach to the assessment of joint sounds, recognising that most are benign and self-limiting, while ensuring accurate diagnosis of sounds suggestive of internal derangement or degenerative change.