What type of synovial joint is the temporomandibular joint?
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 joint formed by the condylar process?
What is the only moveable bone of the skull? What is the joint formed by the condylar process of the mandible and the mandibular fossa of the temporal bone? Temporomandibular joint. What does the frontal bone form?
Why Is TMJ an atypical synovial joint?
The temporomandibular joint (TMJ) is an atypical synovial joint located between the condylar process of the mandible and the mandibular fossa and articular eminence of the temporal bone. It is divided into a superior discotemporal space and inferior discomandibular space by the TMJ disc (or meniscus).
What is the TMJ disc made of?
fibrocartilage
The articular disc of the temporomandibular joint (TMJ) is composed of fibrocartilage, and the extracellular matrix of this disc is composed mainly of collagen, glycosaminoglycan and proteoglycans.
What is a condylar joint?
A condylar joint (Articulatio condylaris), or ellipsoid* joint, or imperfect hinge, opposes a stretched head or a condyle to a glenoidal cavity. It allows principal movments of flexion and extension and accessory movements of laterality or of sliding.
What is the meaning of condylar synovial joint?
A condyloid joint is a type of synovial joint where the articular surface of one bone has an ovoid convexity sitting within an ellipsoidal cavity of the other bone. It allows movement in two planes (i.e., flexion or extension, abduction or adduction).
Where is the condylar process?
mandible
The condylar process, also called the condyloid process, is the process on the mandible that articulates with the disk of the TMJ.
What is an atypical synovial joint?
Typical synovial joints contain hyaline cartilage on the articulating surfaces. In an atypical synovial joint, the articular surfaces are covered in fibrocartilage rather than hyaline cartilage. The acromioclavicular joint is an example of an atypical synovial joint.
When does the synovium of a joint become swollen?
Synovitis (or synovial inflammation) is when the synovium of a joint becomes inflamed (swollen).
What is the function of the ginglymoarthrodial synovial joint?
The joint continues developing in the early childhood years as the jaw is utilized for sucking motions and eventually chewing. The TMJ is a ginglymoarthrodial synovial joint (latin:ginglymus = hinge joint) that allows both backward and forward translation as well as a gliding motion [ 3 ].
What makes up the articulating surface of a synovial joint?
The articulating surfaces of the bones are covered by a thin layer of articular cartilage. Ligaments support the joint by holding the bones together and resisting excess or abnormal joint motions. Synovial joints are characterized by the presence of a joint cavity.
Where are the bursae located in a synovial joint?
Three major bursae and a fat pad are part of the complex joint that unites the femur and tibia of the leg. Additional structures located outside of a synovial joint serve to prevent friction between the bones of the joint and the overlying muscle tendons or skin.