Department of Physical Medicine and Rehabilitation, New York Presbyterian Hospital, 525 East 68th Street, F16, New York, NY 10065 USA.
HSS J. 2012 Jul;8(2):184-9. doi: 10.1007/s11420-011-9238-8. Epub 2012 Jan 24.
Electrodiagnostic studies are used to anatomically localize nerve injuries. These tests help differentiate between cervical radiculopathies, brachial plexopathies, and peripheral nerve injuries. They also help to identify or rule out other underlying neurological diseases and disorders. In this case report, a 22-year-old male swimmer presented with left finger extensor weakness following pull-up exercises. Left wrist extension remained intact. Electrodiagnostic testing revealed a severe but incomplete posterior interosseous neuropathy. Magnetic resonance imaging confirmed inflammation of the nerve in the forearm. Posterior interosseous neuropathy is an uncommon but well-studied condition. Typically, this condition presents with weakness in finger and thumb extension with preserved wrist extension as the extensor carpi radialis longus is innervated proximal to the site of nerve compression in most cases. It is important to understand the anatomic course and distribution of the radial nerve in order to make an accurate diagnosis. Once the anatomy is understood, electrodiagnostic testing may be used to identify the location of nerve injury and exclude other disorders.
电诊断研究用于对神经损伤进行解剖定位。这些测试有助于区分颈椎神经根病、臂丛神经病和周围神经损伤。它们还有助于识别或排除其他潜在的神经疾病和障碍。在本病例报告中，一名 22 岁男性游泳运动员在进行引体向上练习后出现左侧手指伸肌无力。左侧腕部伸展仍然完整。电诊断测试显示严重但不完全的骨间后神经病变。磁共振成像证实前臂神经炎症。骨间后神经病变是一种不常见但研究充分的疾病。通常情况下，这种疾病表现为手指和拇指伸展无力，而腕部伸展保留，因为在大多数情况下，伸腕肌桡侧长肌的神经在受压部位的近端被支配。了解桡神经的解剖路径和分布对于做出准确的诊断非常重要。一旦了解了解剖结构，电诊断测试可用于确定神经损伤的位置并排除其他疾病。
