Ear-jaw articulation

 TEMPO-MANDIBULAR ARTICULATION & #8211; ATM

It is a combination of tingling and flat joint. It is formed by the anterior part of the mandibular fossa of the temporal bone, the articular tubercle and the condyle of the mandible.

The means of joining this joint are:

Articular Capsule & #8211; It is a thin, loose wrap that is inserted anteriorly into the articular tubercle, posteriorly into the scamotympanic fissure, above the mandibular fossa and below the mandible neck.

Articular Disc & #8211; It is a thin ovulated blade situated between the condyle of the mandible and the mandibular fossa. Divide the joint into upper and lower parts, each of which is fitted with a synovial membrane. Its upper face is concave-convex to fit the tubercle and mandible fossa, and its lower face is concave to fit the condyle of the mandible.

Lateral Temporomandibular Ligament & #8211; It consists of two short narrow fascicles. It is inserted above the zygomatic arch and below the lateral face of the mandible neck.

Sphenomandibular Ligament & #8211; It is a thin and flat band that is located medial to the capsule. It is inserted into the sphenoid spine and below the mandibular foramen larynx.

Stylomandibular Ligament & #8211; posterior to the capsule, it fits into the styloid process and the posterior margin of the mandible angle. Separates the parotid from the submandibular gland.

EAR-JAW ARTICULATION
 EAR-JAW ARTICULATION
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.
EAR-JAW ARTICULATION
 EAR-JAW ARTICULATION
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

 

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Synovial Joints
Spine
Shoulder
Elbow
Fist
Hip
knee
Ankle