Boonyapisit Kanokwan, Katirji Bashar, Shapiro Barbara E, Preston David C
Department of Neurology, University Hospitals of Cleveland, Case Western Reserve University, 11100 Euclid Avenue, Cleveland, Ohio 44106-5098, USA.
Muscle Nerve. 2002 Jan;25(1):102-5. doi: 10.1002/mus.10002.
Patients with severe carpal tunnel syndrome (CTS) may occasionally have absent median motor and sensory responses; in these cases, it is not possible to accurately localize the median mononeuropathy to the wrist using standard electrodiagnostic tests. We prospectively investigated the use of comparing the median motor latency to the second lumbrical and the ulnar motor latency to the interossei muscles in 28 patient hands with severe CTS and absent median motor and sensory responses. We found a prolonged latency difference in 92.8%. Along with its use in mild CTS, study of the lumbrical-interossei latency difference is helpful in patients with severe CTS with absent median motor and sensory responses.
重度腕管综合征（CTS）患者偶尔可能出现正中神经运动和感觉反应缺失；在这些病例中，使用标准电诊断测试无法准确将正中单神经病定位到腕部。我们前瞻性地研究了在28例患有重度CTS且正中神经运动和感觉反应缺失的患者手部中，比较正中神经至第二蚓状肌的运动潜伏期与尺神经至骨间肌的运动潜伏期的应用。我们发现92.8%的患者存在潜伏期差异延长。除了用于轻度CTS外，蚓状肌-骨间肌潜伏期差异的研究对重度CTS且正中神经运动和感觉反应缺失的患者也有帮助。
