Intervertebral Disk of Fifth Cervical Vertebra (C5–C6) (Discus intervertebralis C5–C6)
Educational content only — not medical advice.
Anatomy
The intervertebral disk of the fifth cervical vertebra (C5–C6) is situated at one of the highest mechanical stress zones of the cervical spine. Bounded laterally by the uncovertebral joints of Luschka, it provides substantial lordotic wedge height and distributes heavy axial loads during neck flexion and extension.
Clinical notes
The C5–C6 disk is the second most common site of cervical radiculopathy; herniation compresses the C6 nerve root, causing biceps and wrist extensor weakness and numbness radiating down the lateral forearm to the thumb.
Related structures
Educational references
FAQ
What is the role of the Intervertebral Disk of Fifth Cervical Vertebra (C5–C6)?
The intervertebral disk of the fifth cervical vertebra (C5–C6) is situated at one of the highest mechanical stress zones of the cervical spine. Bounded laterally by the uncovertebral joints of Luschka, it provides substantial lordotic wedge height and distributes heavy axial loads during neck flexion and extension.
Why is the Intervertebral Disk of Fifth Cervical Vertebra (C5–C6) clinically important?
The C5–C6 disk is the second most common site of cervical radiculopathy; herniation compresses the C6 nerve root, causing biceps and wrist extensor weakness and numbness radiating down the lateral forearm to the thumb.
Source & license
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