Radial neuropathy at the spiral groove: Difference between revisions
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Bunney EB, Gallagher EJ: Peripheral Nerve Disorders; in Marx JA, Hockberger RS, Walls RM, et al (eds): Rosen’s Emergency Medicine: Concepts and Clinical Practice, ed 8. St. Louis, Mosby, Inc., 2014, (Ch) 107: p 1428-1441. | |||
[[Category:Neuro]] | [[Category:Neuro]] | ||
Revision as of 22:34, 14 February 2016
Background
- Radial nerve predisposed to compression in area where runs next to humerus (i.e. spiral groove)
- Often occurs after prolonged pressure
- Frequently from inebriated individuals sleeping with arm resting on hard surface (i.e. "Saturday night palsy")
Clinical Features
- Weakness of wrist extensors ("wrist drop"), finger extensors, and brachioradialis
- Triceps retains full strength
- Possible sensory loss over the dorsum of the hand, sometimes extending up the posterior forearm
- Thumb abduction is affected (abductor pollicis longus is a radial-innervated muscle)
Vs. CVA
- Relative preservation of triceps strength
- Sensory loss isolated to the dorsum of the hand
- Brachioradialis should also be weak
Differential Diagnosis
Workup
- Clinical diagnosis
Management
Disposition
See Also
External Links
Sources
Bunney EB, Gallagher EJ: Peripheral Nerve Disorders; in Marx JA, Hockberger RS, Walls RM, et al (eds): Rosen’s Emergency Medicine: Concepts and Clinical Practice, ed 8. St. Louis, Mosby, Inc., 2014, (Ch) 107: p 1428-1441.