Figure 10a. (a, b) Photographs of anatomic TMJ specimens. (a) The joint capsule with the laterally reinforcing lateral ligament (1) and lateral pterygoid muscle (2) are shown in the lateral projection. The superior belly of the lateral pterygoid muscle inserts on the disk and the capsule (2A); the inferior part inserts on the mandibular neck (2B). (b) In the medial aspect, the mandibular ramus (1), the lateral pterygoid muscle (2), and the medial pterygoid muscle (3) are shown. (c) Coronal MR image (400/15) of the pterygoid muscles. The mandibular ramus (1), lateral pterygoid muscle (2), and medial pterygoid muscle (3) are shown.