ATLANTO-OCCIPITAL JOINTS

 

Joint animation

DESCRIPTION: This joint articulation is between the superior articular facet of the lateral mass of atlas and the inferior surface of the condyle of the occipital bone. It is a synovial joint with articular capsule which is reinforced by ligaments and which is lined by synovial membrane.

LIGAMENTS:

NERVE SUPPLY:

Spinal nerves

BLOOD SUPPLY:

        

MOVEMENTS:

         Flexion: Rectus capitis anterior and longus capitis

         Extension: Rectus capitis posterior major, rectus capitis posterior minor, obliquus capitis superior, splenius capitis, upper part of trapezius and semispinalis capitis.

         Lateral flexion: Upper part of trapezius, rectus capitis lateralis, semispinalis capitis, splenius capitis and sternocleidomastoid.

Gallery

Flexion

Extension

Hyperextension

Lateral flexion

Skin

Interior

Bones

 

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