annulus fibrosus

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annulus fibrosus

The tough fibrous outer zone of the intervertebral disc that normally retains the soft inner nucleus pulposus. Weakness of the annulus fibrosus allows prolapse of the pulpy centre in the condition inaccurately known as ‘slipped disc’.

annulus fibrosus

the fibrous ring which encircles each intervertebral disc.

annulus fibrosus

fibrocartilage ring forming the outer part of an intervertebral disc (see disc)