CHAPTER 9

TEMPOROMANDIBULAR JOINT

Overview and Topographic Anatomy

Anatomy

Vascular Supply

Nerve Supply

Clinical Correlates

Questions

Overview and Topographic Anatomy

GENERAL INFORMATION

The temporomandibular joint (TMJ) is the articulation between the squamous portion of the temporal bone and the condyle of the mandible

Structural Components

The TMJ comprises 2 types of synovial joints—hinge and sliding—and consists of the following:

• Squamous portion of the temporal bone

• Articular disc (contained within the TMJ)

• Condyle of the mandible

• Ligaments (serve as boundaries)

TMJ Dysfunction

Affects approximately 25% of the population and may be severe in a small subgroup

Causes include arthritis, trauma, infection, bruxism, and disc displacement

More common in females

Anatomy

ANATOMIC FEATURES

Vascular Supply

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