What type of synovial joint is the atlanto-occipital joint?

condyloid synovial joints
The atlanto-occipital articulation (also known as the C0-C1 joint/articulation) is comprised of a pair of condyloid synovial joints that connect the occipital bone (C0) to the first cervical vertebra (atlas/C1).

What is a synovial ellipsoid joint?

Definition. A synovial joint in which an oval-shaped process of one bone fits into an elongated or ellipsoidal cavity of the other, allowing movements such as flexion, extension, abduction and adduction.

Is atlanto-occipital joint is an example of a pivot joint?

Cervical Region The atlanto-occipital joint (O-C1) acts as a pivot for the flexion/extension motion of the cranium, with 13 degrees average flexion/extension and 8 degrees lateral bending, thus allowing only a few degrees of axial rotation.

What is the movement of atlanto-occipital joint?

The principal movement at the atlantooccipital joint is flexion-extension. This movement permits nodding of the head, as seen when indicating approval (the “yes” movement).

Is the atlantoaxial joint synovial?

It consists of three distinct, synovial joints: one medial joint and two lateral atlantoaxial joints. The median atlantoaxial joint’s structure is formed by the dens of C1 vertebrae and two ligamentous structures anteriorly and posteriorly.

Where is atlantoaxial joint?

cervical spine
The C1 C2 spinal motion segment, also called the atlantoaxial joint, is located in the upper portion of the cervical spine. It consists of the C1 and C2 vertebrae, and the anatomical structures connecting them. This segment provides rotational motion, supports the head, and protects the spinal cord and nerve pathways.

Where is ellipsoid joint?

6. Ellipsoid joints: This joint is also known as a ‘condyloid joint’. Ellipsoid joints allow back and forth and side to side movement. Such joints occur between the metacarpals and phalanges (between the bones of the hand and the bones of the finger) as seen in the adjacent image.

What joints are Nonaxial?

Nonaxial (gliding): Found between the proximal ends of the ulna and radius. Monoaxial (uniaxial): Movement occurs in one plane. An example is the elbow joint. Biaxial: Movement can occur in two planes.

What forms atlantoaxial joint?

Structure. The atlanto-axial joint is a joint between the atlas bone and the axis bone, which are the first and second cervical vertebrae. It is a pivot joint. There is a pivot articulation between the odontoid process of the axis and the ring formed by the anterior arch and the transverse ligament of the atlas.

What forms Atlantoaxial joint?

Is the atlantoaxial joint uniaxial?

Pivot Joint 3a). The bone rotates within this ring. Since the rotation is around a single axis, pivot joints are functionally classified as a uniaxial diarthrosis type of joint. An example of a pivot joint is the atlantoaxial joint, found between the C1 (atlas) and C2 (axis) vertebrae.

What are ellipsoid joints?

Some of the ellipsoid joint examples are the wrist-joint, metacarpophalangeal joints, metatarsophalangeal joints, and atlanto occipital joints.