What does the atlanto-occipital joint allow?
Being an ellipsoid joint, the atlantooccipital joint allows movement in two degrees of freedom. These are flexion-extension and lateral flexion.
What is the AO joint?
An atlanto-occipital (AO) joint injection is an outpatient procedure for diagnosing and treating chronic upper neck pain and headache. What is the atlanto-occipital joint? Joints connect the vertebrae, the bones of your spine. These joints help guide your spine when you move.
How many degrees of freedom does the atlantoaxial joint have?
It allows an axial motion (twist) of the segment, that is, one degree of freedom and a spherical motion (swing) that determines its direction, that is, two degrees of freedom. The ball and socket joint allows rotation and back and forth motion in all planes. Atlantoaxial joint has a range of movements.
What type of joint is the AO joint?
synovial joint
The atlanto-occipital joint is an articulation between the atlas bone and the occipital bone. It consists of a pair of condyloid joints. It is a synovial joint.
Where is the AO joint?
The Atlanto-Occipital Joint (AO) is a paired joint between the base of the skull and the cervical spine.
What is the type of atlanto-occipital joint?
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 joint is between C1 and C2?
atlantoaxial joint
The C1 and C2 vertebrae are the first two vertebrae at the top of the cervical spine. Together they form the atlantoaxial joint, which is a pivot joint.
Is atlantoaxial joint synovial?
The median atlantoaxial joint is a pivot type of synovial joint. Broadly, the joint is formed by the dens of axis (odontoid process) surrounded by an osteoligamentous ring composed of the anterior arch of atlas anteriorly and the transverse ligament of atlas posteriorly.
Which joint allows us to nod?
atlanto-occipital joint
The atlas and axis in particular work with the ligaments to move the neck. The atlas and the occipital bone form the atlanto-occipital joint, which allows neck flexion. When you nod your head as if to say “yes,” that is neck flexion. The atlas and axis form the atlanto-axial joint, which allows head rotation.
Which bone is called Yes bone?
Give scientific reasons of the following statements : (i) Atlas vertebra is also called ‘yes bone’.
Where is radiocarpal joint?
wrist joint
The wrist joint also referred to as the radiocarpal joint is a condyloid synovial joint of the distal upper limb that connects and serves as a transition point between the forearm and hand.