A comprehensive search of the literature focusing on the TMCJ ligaments and capsule was undertaken. Analysis of data involved a comparison and contrast of relevant findings of investigations done to date. Studies of the TMCJ capsular and ligamentous anatomy differ with respect to their findings as well as to nomenclature.
Conflict exists regarding the existence of a volar accessory ligament.
Studies also differ in classifying the tissue medial to the tendon of the abductor pollicis longus as an intrinsic ligament or segment of the joint capsule. The normal motion of the TMCJ is dependent on the shape of joint surfaces, on normal muscle action, ligamentous restraint, and capsular extensibility.