J Korean Orthop Assoc.  2009 Apr;44(2):271-274.

Partial Paralysis of the Posterior Interosseous Nerve: A Case Report

• Park JY

Abstract

Partial paralysis of the posterior interosseous nerve at the forearm region has been rarely reported. We report our patients. After closed crushing injury at the forearm region, the patients showed "Sign of horns" which means disability of extension at the third and fourth metacarpo-phalangeal joint because of partial paralysis of the posterior interosseous nerve. We treated the patients as conservative treatment and the patients was completely recovered. So the autors report this case.

Keyword

Posterior interosseous nerve; Closed crushing injury

MeSH Terms

Forearm
Humans
Joints
Paralysis

Figure

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  Fig. 1 A initial photo showed a typical presentation of partial posterior interosseous nerve injury.

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  Fig. 2 Vertical projection for the 3rd extensor digitorum showed normal finding of the continuity and echogenicity. (A) Wrist level (B) forearm level.

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  Fig. 3 At 6 months after initial injury.

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