What effect does maximal opening have on the TMJ capsule?

Maximal opening of the jaw results in the capsule of the temporomandibular joint (TMJ) being most taut. The TMJ capsule is a fibrous structure that surrounds the joint and helps stabilize it during movement. When the jaw is opened fully, the spatial arrangement of the joint components, including the articular disc and the surrounding ligaments, causes the joint capsule to stretch significantly. This stretching occurs because the capsule must accommodate the increased range of motion and the displacement of the jaw components. The tautness at maximal opening is crucial as it helps to maintain the integrity and function of the joint while preventing excessive movement that could lead to injury.