Posterior interosseous neuropathy: Difference between revisions
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==Background== | ==Background== | ||
*Posterior interosseous nerve is a branch of the radial nerve that supplies motor innervation to the forearm extensor muscles | *Posterior interosseous nerve is a branch of the radial nerve that supplies motor innervation to the forearm extensor muscles | ||
*Compression or injury can cause an isolated PIN palsy | *Compression or injury can cause an isolated PIN palsy <ref>Dang AC et al. Unusual Compression Neuropathies of the Forearm, Part I: Radial Nerve. JHS. 2009;34A:1906-1914.</ref> | ||
*More proximal pathologies can cause a combined palsy | *More proximal pathologies can cause a combined palsy | ||
*More common in body builders and laborers due to repetitive pronosupination | *More common in body builders and laborers due to repetitive pronosupination | ||
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==References== | ==References== | ||
<references/> | <references/> | ||
[[Category:Orthopedics]] | |||
Revision as of 06:12, 1 August 2020
Background
- Posterior interosseous nerve is a branch of the radial nerve that supplies motor innervation to the forearm extensor muscles
- Compression or injury can cause an isolated PIN palsy [1]
- More proximal pathologies can cause a combined palsy
- More common in body builders and laborers due to repetitive pronosupination
Clinical Features
- Forearm and wrist pain
- Weakness on finger and wrist extension
Differential Diagnosis
- Peripheral neuropathy
- Repetitive microtrauma
- Entrapment
- Trauma
- Space occupying lesions
- Ganglion cyst
- Lipoma
- Bone tumor
- Iatrogenic
Upper extremity peripheral nerve syndromes
Median Nerve Syndromes
Ulnar Nerve Syndromes
Radial Nerve Syndromes
- Radial neuropathy at the spiral groove (ie. "Saturday night palsy")
- Posterior interosseous neuropathy
Proximal Neuropathies
- Suprascapular neuropathy
- Long thoracic neuropathy
- Axillary neuropathy
- Spinal accessory neuropathy
- Musculocutaneous neuropathy
Other
Evaluation
- Usually a clinical diagnosis
- EMG
Management
- Nonoperative: rest, activity modification, NSAIDs, splinting
- Operative decompression: compressive masses
Disposition
- Discharge with orthopedic follow up
See Also
External Links
References
- ↑ Dang AC et al. Unusual Compression Neuropathies of the Forearm, Part I: Radial Nerve. JHS. 2009;34A:1906-1914.