Simultaneous arthroscopy of upper and lower compartments of the temporomandibular joint.

Temporomandibular joint (TMJ) arthroscopy is a well-established technique for managing internal derangement of the joint, providing comprehensive intra-articular treatment. While upper compartment interventions generally yield positive outcomes, challenges remain in accessing and treating the lower compartment due to its limited volume and the size of available instruments. This technical note introduces a novel method for simultaneous arthroscopy of both TMJ compartments using an ultrafine optic (0.7-mm) to enhance visualization of the lower compartment. This approach demonstrates the feasibility of simultaneous arthroscopy of both TMJ compartments, enhancing the diagnosis and treatment of complex pathologies and enabling further therapeutic studies.