摘要
目的 :探讨骨间后神经 (PIN)受损的临床及肌电图诊断方法。方法 :对 44例临床疑PIN受损患者作详细的临床检查和肌电图研究。结果 :在肱桡肌、桡侧伸腕长肌肌电图及运动神经传导速度(MCV)均正常。伸指总肌、食指固有伸肌肌电图均有不同程度异常 ;MCV测定分别有 2 4例 (5 4% )及 34例 (77% )异常。桡神经浅支的感觉神经传导速度 (SCV)均可引出动作电位 ,其中 7例传导速度轻度减慢。结论 :肱桡肌、桡侧伸腕长肌无异常 ,其余前臂伸肌的肌电图改变 ,部分病例MCV异常 ,桡神经浅支SCV正常 ,即可诊断PIN受损。
Objective: To explore the clinical features and electromyographical diagnosis for the posterior interosseous nerve(PIN) injury.Method: Clinical examinations and electromyograms(EMGs) were performed in 44 suspected patients with PIN injury.Result: The EMGs and motor nerve conduction velocities (MCVs) were normal at the brachioradialis and extensor carpi radialis longus in all patients.EMGs were abnormal in various degrees at the extensor digitorum communis and extensor indicis proprius in all patients.The slowings of the MCVs were noted at the extensor digitorum communis in 24 patients (54%) and at the extensor indicis proprius in 34 patients (77%).The action potentials of sensory nerve conduction velocities (SCV) were all elicited at the superfacial branches of the radial nerves,and the slight slowings of the SCVs were detected in seven patients.Conclusion: The PIN injury could be diagnosed if the EMGs of the forearm extensor muscles are abnormal but the brachioradialis and extensor carpi radialis longus,the SCVs of the superfacial branches of the radial nerves are normal, and the MCVs are partly abnormal. [
出处
《临床神经电生理学杂志》
2001年第1期12-13,共2页
Journal of Clinical Electroneurophysiology
关键词
骨间后神经
骨电图
神经传导速度
Posterior interosseous nerve
Electromyogram
Nerve conduction veloctiy
