肌电图
医学
腰椎
去神经支配
狭窄
腰椎管狭窄症
椎管狭窄
神经再支配
外科
解剖
心脏病学
物理医学与康复
作者
Jae Hyeon Park,Sun Gun Chung,Keewon Kim
摘要
Radiculopathies caused by spinal stenosis in the upper lumbar spinal canal (L1/2, L2/3, L3/4) have not been comprehensively investigated.This retrospective study reviewed 14 patients from a tertiary hospital outpatient clinic. The inclusion criteria were upper lumbar stenosis seen on MRI and radiculopathies with active denervation confirmed on electromyography. Patients with any other conditions that could explain the clinical or electrophysiological manifestations were excluded.Neurogenic findings were predominantly observed in L5 or S1 myotomes on electromyography. Abnormal spontaneous activity was observed in distal muscles in all patients and in proximal muscles in eight patients. Axonal involvement was bilateral in 10 patients and unilaterally in 4 patients. MRI showed redundant nerve roots in 13 patients with chronic reinnervation on electromyography.Upper lumbar spinal stenosis usually causes L5 or S1 radiculopathies with diverse patterns. This discrepancy may cause diagnostic confusion.
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