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Abstract：
OBJECTIVE: To investigate changes in the H-reflex in patients with monoradiculopathies involving L5 or S1 levels by stimulating the sciatic nerve and recording simultaneously from the tibialis anterior (TA), peroneus longus (PL), and soleus (S) muscles.
METHODS: Patients with unilateral radicular back pain with L5 or S1 root compression on MRI, participated in this cross-sectional study. The H-reflex over the TA, PL, and S muscles was simultaneously recorded by sciatic nerve stimulation. The H-reflex latency was compared with that of the contralateral extremity.
RESULTS: Fifty-eight patients (29 patients L5; 29 patients S1 radiculopathy) were included in the study. There were significant delays in the latency of the H-reflex over TA (30.95±2.31-29.21±1.4) and PL (31.05±2.85-29.02±1.99) muscles on the affected side in patients with L5 radiculopathy. However, the latency of the S H-reflex was similar on both sides. In contrast, in patients with S1 radiculopathy, there was a significant delay in the latency of soleus H reflex (32.76±3.45-29.9±3.19), while the significant delay was not detected in the TA and PL muscles. However, the cutoff values for the H-reflex latency of all muscles were not found to have clinical significance.
CONCLUSIONS: The study presents that the H-reflex study, recorded from the TA, PL, and S muscles by sciatic nerve stimulation, is of interest but has minimal contribution to radiculopathy diagnosis in conventional electrodiagnostic tests.
METHODS: Patients with unilateral radicular back pain with L5 or S1 root compression on MRI, participated in this cross-sectional study. The H-reflex over the TA, PL, and S muscles was simultaneously recorded by sciatic nerve stimulation. The H-reflex latency was compared with that of the contralateral extremity.
RESULTS: Fifty-eight patients (29 patients L5; 29 patients S1 radiculopathy) were included in the study. There were significant delays in the latency of the H-reflex over TA (30.95±2.31-29.21±1.4) and PL (31.05±2.85-29.02±1.99) muscles on the affected side in patients with L5 radiculopathy. However, the latency of the S H-reflex was similar on both sides. In contrast, in patients with S1 radiculopathy, there was a significant delay in the latency of soleus H reflex (32.76±3.45-29.9±3.19), while the significant delay was not detected in the TA and PL muscles. However, the cutoff values for the H-reflex latency of all muscles were not found to have clinical significance.
CONCLUSIONS: The study presents that the H-reflex study, recorded from the TA, PL, and S muscles by sciatic nerve stimulation, is of interest but has minimal contribution to radiculopathy diagnosis in conventional electrodiagnostic tests.
摘要：
目的：通过刺激坐骨神经并从胫骨前（TA）同时记录，研究涉及L5或S1水平的单发性心脏病患者H反射的变化。腓骨长（PL），和比目鱼肌。
方法：单侧神经根性背痛伴L5或S1根部压迫的患者，参加了这项横断面研究。TA上的H反射，PL,同时通过坐骨神经刺激记录S肌。将H反射潜伏期与对侧肢体进行比较。
结果：58例患者（29例患者L5；29例患者S1神经根病）纳入研究。L5神经根病患者患侧TA（30.95±2.31-29.21±1.4）和PL（31.05±2.85-29.02±1.99）肌肉的H反射潜伏期明显延迟。然而,SH反射的潜伏期在两侧相似.相比之下,在S1神经根病患者中，比目鱼H反射潜伏期明显延迟(32.76±3.45-29.9±3.19),而在TA和PL肌肉中未检测到明显的延迟。然而,未发现所有肌肉的H反射潜伏期的截止值具有临床意义.
结论：研究表明，H反射研究，从TA记录，PL,坐骨神经刺激肌肉，感兴趣，但在常规电诊断测试中对神经根病的诊断贡献最小。
方法：单侧神经根性背痛伴L5或S1根部压迫的患者，参加了这项横断面研究。TA上的H反射，PL,同时通过坐骨神经刺激记录S肌。将H反射潜伏期与对侧肢体进行比较。
结果：58例患者（29例患者L5；29例患者S1神经根病）纳入研究。L5神经根病患者患侧TA（30.95±2.31-29.21±1.4）和PL（31.05±2.85-29.02±1.99）肌肉的H反射潜伏期明显延迟。然而,SH反射的潜伏期在两侧相似.相比之下,在S1神经根病患者中，比目鱼H反射潜伏期明显延迟(32.76±3.45-29.9±3.19),而在TA和PL肌肉中未检测到明显的延迟。然而,未发现所有肌肉的H反射潜伏期的截止值具有临床意义.
结论：研究表明，H反射研究，从TA记录，PL,坐骨神经刺激肌肉，感兴趣，但在常规电诊断测试中对神经根病的诊断贡献最小。
