Question

Atlantoaxial joint is an example of ………….. joint.

Answer 1

Hint: A pivot joint in animal anatomy is a type of synovial joint. The axis of a convex articular surface is parallel with the longitudinal axis of the bone in the pivot joints.

Complete answer:
A synovial joint that allows the bone to travel uniaxially along one axis of rotation is the pivot joint. The central bony pivot is surrounded by a bone collar and a ligament in the pivot joint. Supination, pronation, and rotation are the probable gestures.
An atlantoaxial joint is a joint between the first and second cervical vertebrae in the upper part of the neck; an atlas and an axis. It is a joint with a hinge. The complex existence of the atlantoaxial joint. It is made up of no less than four different joints.
A pivot articulation exists between the odontoid axis process and the ring created by the anterior arch and the atlas transverse ligament.
The most common form of the joint in the body is the synovial joints. The presence of a joint cavity is a key structural feature of a synovial joint that is not seen in fibrous or cartilaginous joints. The site at which the articulating surfaces of the bones touch each other is this fluid-filled area. The articulating bone surfaces at a synovial joint are often not specifically related to each other by fibrous connective tissue or cartilage, unlike fibrous or cartilaginous joints. This gives the bones of a synovial joint the ability to move against each other smoothly, facilitating increased mobility of the joint.

So, the correct answer is ‘Pivot joint’.

Note:
In common terms, the atlantoaxial joint is actually a system of three: two lateral and one median atlantoaxial joint. At this stage, fracture or injury may be catastrophic because of its proximity to the brain stem and significance in stabilization.