Tmj Disc Anatomy

The joint involves fibrocartilaginous surfaces and an articular disc which divides the joint into two cavities. It has a biconcave shape with a thicker periphery attached at its periphery except posteriorly to the tmj capsule see below.

Anatomy Of Temporomandibular Joint

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The unique feature of the tmj is the articular disc a flexible and elastic cartilage that serves as a cushion between the two bone surfaces.

Tmj disc anatomy. Disc displacement is an example of internal derangement. The disc lacks nerve endings and blood vessels in its. Temporomandibular joint pain is generally due to one of four reasons.

Myofascial pain dysfunction syndrome primarily involving the muscles of mastication. Tmj is a synovial condylar and hinge type joint. This is the most common cause.

Contents introduction types of joint development of tmj mandibular fossa condyle articular disc histology of articular surfaces innervation of tmj vascularization of tmj ligaments muscles of mastication biomechanics conclusion references 2. Good knowledge of the anatomy of the tmj and related structures is essential to correct diagnosis and appropriate treatment. The temporomandibular joint tmj disc or meniscus is made of fibrocartilage and divides the joint into two compartments.

The disc is composed of fibrocartilage with crimped collagen thought to better absorb impacts. Internal derangements an abnormal relationship of the disc to any of the other components of the joint.

Temporomandibular Joint Disc Radiology Reference Article