Which anatomical structure helps maintain the stability of the inferior joint during the rotation phase?

The elastic pull of the superior fibers of retrodiscal tissue plays a crucial role in maintaining the stability of the inferior joint during the rotation phase of jaw movement. The retrodiscal tissue, which is located behind the articular disc, is composed of fibroelastic tissue that allows for flexibility while also providing the necessary support to keep the disc in place relative to the condyle of the mandible.

During the rotational movements of the jaw, particularly in the opening and closing phases, this elastic pull helps to maintain the position of the articular disc and ensures that it remains properly aligned with the condylar head. This alignment is fundamental to joint stability and function. If the disc were to become displaced, it could lead to dysfunction and pain in the temporomandibular joint (TMJ).

In contrast, while the other structures mentioned do contribute to the overall stability and function of the TMJ, they do not specifically address the role of maintaining the inferior joint during the critical rotation phase in the same manner as the elastic pull of the superior fibers of the retrodiscal tissue. For instance, the collateral ligaments primarily limit movement in a mediolateral direction and thus do not provide the same level of support during rotation.