What is glenoid fossa in TMJ?

The glenoid fossa forms a deep concavity in the temporal bone, receiving the mandibular condyle to make the hinge of TMJ function. Associated with the TMJ are also the tendon of the pterygoid muscle and various surrounding ligaments.

What attaches to the glenoid fossa?

The humerus is held in place within the glenoid cavity by means of the long head of the biceps tendon. This tendon originates on the superior margin of the glenoid cavity and loops over the shoulder, bracing humerus against the cavity.

What type of joint is the glenoid fossa?

Synovial ball and socket joint
Glenohumeral joint

Type Synovial ball and socket joint; multiaxial
Articular surfaces Glenoid fossa of scapula, head of humerus; glenoid labrum
Ligaments Superior glenohumeral, middle glenohumeral, inferior glenohumeral, coracohumeral, transverse humeral

Where is the glenoid fossa TMJ found?

The part of the mandible which mates to the under-surface of the disc is the condyle and the part of the temporal bone which mates to the upper surface of the disk is the articular fossa or glenoid fossa or mandibular fossa.

What is articular fossa?

The articular tubercle (eminentia articularis) is a bony eminence on the temporal bone in the skull. It is a rounded eminence of the anterior root of the posterior end of the outer surface of the squama temporalis. The articular tubercle is the site of attachment of the lateral ligament of the temporomandibular joint.

What type of joint is temporomandibular?

The temporomandibular joint (TMJ), also known as the mandibular joint, is an ellipsoid variety of the right and left synovial joints forming a bicondylar articulation.

What is the glenoid fossa and what is its purpose?

The glenoid fossa is the socket of the shoulder joint. This part of the shoulder is a ball and socket joint. The head of the Humerus fits into the Glenoid fossa, though it is a shallow socket.

What type of joint is the temporomandibular?

synovial joints
The temporomandibular joint (TMJ), also known as the mandibular joint, is an ellipsoid variety of the right and left synovial joints forming a bicondylar articulation.

What is the glenoid fossa and meniscus?

Glenoid fossa – the part of the joint located at the base of the skull. Meniscus – a small disc-shaped piece of cartilage, which serves as a cushion between the mandibular condyle and glenoid fossa. For some patients, the pain in the TMJ is severe and unrelenting.

What are the osseous components of the temporomandibular joint?

The osseous components of the temporomandibular joint (TMJ) include the mandibular condyle, glenoid (mandibular) fossa, and, anteriorly, the articular tubercle (the bony eminence of the temporal bone). The TMJ disk is a biconcave structure, with a thick periphery and a thin center.

Where is the mandibular condyle and glenoid fossa?

Mandibular condyle – the part of the joint located in the lower jaw. Glenoid fossa – the part of the joint located at the base of the skull. Meniscus – a small disc-shaped piece of cartilage, which serves as a cushion between the mandibular condyle and glenoid fossa.

What are the three parts of the TMJ?

The TMJ is composed of three parts. Mandibular condyle – the part of the joint located in the lower jaw. Glenoid fossa – the part of the joint located at the base of the skull.