Median and ulnar nerve compression at the wrist caused by anomalous muscles.

Compression of the deep palmar branch of the ulnar nerve by an anomalous muscle. Case report and review.

The deep branch of the ulnar nerve as it crosses the hand supplies the interossei, third and fourth lumbricals, the adductor pollicis and part of flexor pollicis brevis. Although variations in this distribution occur (Highet 1943, Rowntree 1949), a lesion of the nerve characteristically presents as wasting and weakness of these muscles with sparing of hypothenar muscles and normal sensibility. ...

Prevalence of ulnar-to-median nerve motor fiber anastomosis (Riché-Cannieu communicating branch) in hand: An electrophysiological study

Background: Two main muscles studied in the hand for evaluation of median nerve injuries are opponens pollicis (OP) and abductor pollicis brevis (APB). However, Riché-Cannieu communicating branch (RCCB) may limit the use of these muscles in electrodiagnosis. This condition is confusing in the case of median nerve injuries. This study was conducted to evaluate the prevalence of RCCB. &...

Ulnar Neuropathy Caused by a Schwannoma in the Guyon ’ s Cannal

nerve entrapment at the wrist or hand that can cause motor, sensory or combined motor and sensory loss depending on the localization of entrapment along the canal. The most common etiological factor is the compression of the ulnar nerve at the wrist by a ganglion. However, other conditions such as anomalous musculotendinous arches, lipomas, diseases of the ulnar artery, fractures of the hamate,...

Background: Two main muscles studied in the hand for evaluation of median nerve injuries are opponens pollicis (OP) and abductor pollicis brevis (APB). However, Riché-Cannieu communicating branch (RCCB) may limit the use of these muscles in electrodiagnosis. This condition is confusing in the case of median nerve injuries. This study was conducted to evaluate the prevalence of RCCB. &...

گزارش 1 مورد فشردگی عصب مدین توسط خار

Entrapment of median nerve can be developed at multiple sites along this nerve. One of the compression sites of median nerve is supracondylar area of humerous. Sometimes struther ligament or spur or both of them are the rare cause of entrapment syndrome of the median nerve. Struther ligament or spur can compress ulnar nerve and/or brachial artery. These cases may have median ulnar ner...