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Presentation with respect to different levels involved

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

The presentation of cervical spondylosis varies with site of the lesion:

  • most frequently affected intervertebral joint is C5/C6 - this characteristically causes loss in sensation over the thumb and a reduced biceps reflex. An inverted brachioradialis reflex may be present: there is a loss of the supinator reflex with finger flexion.
  • C7/C8/T1 - loss of sensation over little finger, weakness of flexor carpi ulnaris
  • C6/C7 - loss of sensation over middle finger, weakness of extension of elbow - triceps - and a reduced triceps reflex
  • C4/C5 - loss of sensation over elbow, weakness of abduction of arm

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