An exchange technique in temporomandibular joint (TMJ) arthroscopy to insert a larger operative cannula to facilitate advanced procedures.

The paper describes a modification of the surgical technique for temporomandibular joint arthroscopy, using an exchange guide to replace the 2.2 mm cannula with one of 2.9 mm to better facilitate osteoplasty of the medial wall. The procedure is a simple and safe manoeuvre that reduces complications such as fluid extravasation into soft tissues, damage to the articular eminence, and bleeding into the superior joint space. Every oral and maxillofacial surgeon could benefit from this novel method, which reduces the chances of failure when exchanging the working cannulas, the potential morbidity of re-entry, and the duration of surgery.