What is articular tubercle?

The articular tubercle (eminentia articularis) is a bony eminence on the temporal bone in the skull.

What is temporomandibular joint articulation?

The temporomandibular joint consists of articulations between three surfaces; the mandibular fossa and articular tubercle (from the squamous part of the temporal bone), and the head of mandible. The presence of such a disk splits the joint into two synovial joint cavities, each lined by a synovial membrane.

What is a Ginglymoarthrodial joint?

The temporomandibular joint (TMJ), also known as ginglymoarthrodial joint, is a bi-arthrodial joint that is composed of the temporal bone’s articular surface and the head of the mandible, enclosed in a fibrous capsule. The joint is separated into two synovial joint cavities by an articular disc.

What is the articular disc?

The articular disk(meniscus) is a thin, oval plate of fibrocartilage present in several joints which separates synovial cavities. This separation of the cavity space allows for separate movements to occur in each space.

What is the purpose of articular tubercle?

Then there is the articular tubercle, where some ligaments laterally attach to the TMJ, and the condyle moves over it when the jaw opens. Simply put, this means that the AE controls how far your jaw (or mandible) can open.

Where is zygomatic process?

temporal bone
The zygomatic process is a long arched process, projecting from the lower part of the squamous part of temporal bone.

Which part of the temporal bone is involved in the temporomandibular joint?

In anatomy, the temporomandibular joints (TMJ) are the two joints connecting the jawbone to the skull. It is a bilateral synovial articulation between the temporal bone of the skull above and the mandible below; it is from these bones that its name is derived….

Will TMJ disc go back into place?

The most frequent displacement of the disc is anterior to the mandibular condyle however, in rare cases it can be posteriorly. The prognosis for these conditions is good and normally recover with minimal intervention or conservative management.

What is the most moveable joint?

Synovial joints
Synovial joints ( diarthroses ) are the most movable joints of the body and contain synovial fluid.

What does the mandibular fossa articulate with?

The mandibular fossa is the depression in the temporal bone that articulates with the mandible. In the temporal bone, the mandibular fossa is bounded anteriorly by the articular tubercle and posteriorly by the tympanic portion of the temporal bone, which separates it from the external acoustic meatus.

Why does my zygomatic bone hurt?

Zygomatic arch pain is commonly reported by patients visiting the orofacial pain clinic and is majorly accepted to be caused by masseter muscle pain. But a variety of conditions may present as orofacial pain in the zygomatic arch region, including life-threatening diseases such as salivary gland tumors.

Where is the temporomandibular articulation located in the skull?

The joint, immediately in front of the ear, between the head of the lower jaw bone (the mandible) and the under side of the temporal bone of the skull. Movement at this joint can often be seen through the skin if the mouth is opened widely.

What is the function of the temporomandibular joint?

The temporomandibular joint — the TMJ – is the joint between the lower jawbone – the mandible – and the temporal bone of the skull. The TMJ is responsible for jaw movement and is the most used joint in the body. The TMJ is essentially the articulation between the condyle of the mandible and the mandibular fossa – a socket in the temporal bone.

When does the temporomandibular joint develop in the fetus?

Development. Formation of the temporomandibular joints occurs at around 12 weeks in utero when the joint spaces and the articular disc develop. At approximately 10 weeks the component of the fetus future joint becomes evident in the mesenchyme between condylar cartilage of the mandible and the developing temporal bone.

Where does the condyle of the mandible articulate?

The condyle of the mandible articulates with the temporal bone in the mandibular fossa. The mandibular fossa is a concave depression in the squamous portion of the temporal bone. These two bones are actually separated by an articular disc, which divides the joint into two distinct compartments.