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KMID : 1036220180210040252
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Clinics in Shoulder and Elbow
2018 Volume.21 No. 4 p.252 ~ p.255
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Posterior Interosseous Nerve Palsy Caused by a Ganglion of the Arcade of Frohse
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Lee Seung-Jin
Hyun Yoon-Suk
Baek Seung-Ha
Seo Ji-Hyun
Kim Hyun-Ho
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Abstract
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A 51-year-old male who is right-handed visited the outpatient for right fingers-drop. The patient’s fingers, including thumb, were not extended on metacarpophalangeal joint. The active motion of the right wrist was available. The electromyography and nerve conduction velocity study were consistent with the posterior interosseous neuropathy. Further evaluation was done with the magnetic resonance imaging for finding the space-occupying lesion or any possible soft tissue lesion around the radial nerve pathway. On magnetic resonance imaging, the ganglion cyst, which was about 1.8 cm in diameter, was observed on the proximal part of the superficial layer of the supinator muscle (Arcade of Frohse). The surgical excision was done on the base of ganglion cyst at the base of stalk of cyst which looked to be connected with proximal radioulnar joint capsule. The palsy had completely resolved when the patient was observed on the outpatient department a month after the operation.
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KEYWORD
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Posterior interosseous nerve palsy, Ganglions, Arcade of Frohse
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