Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (42): 6343-6350.doi: 10.3969/j.issn.2095-4344.2016.42.017

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Correlation between the MRI-based grading system and F wave as well as H-reflex in patients with lumbar disc herniation

Li Xiao, Lin Cai-na, Luo Hai-jie, Wan Qing, Ruan Yu-ting, Zhang Xin-sheng, Wu Shao-ling, Ma Chao   

  1. Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China
  • Received:2016-08-27 Online:2016-10-14 Published:2016-10-14
  • Contact: Ma Chao, M.D., Chief physician, Doctoral supervisor, Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China
  • About author:Li Xiao, Master, Attending physician, Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China
  • Supported by:

    the Project of Medical Science and Technology Research of Guangdong Province, No. A2015308

Abstract:

BACKGROUND: Lumbar spine MRI and electrophysiological test are reliable methods for evaluating nerve root injury caused by lumbar disc herniation.
OBJECTIVE: To analyze the correlation between the MRI-based grading system and the latency and frequency of F wave as well as latency and amplitude of H-reflex in patients with lumbar disc herniation.
METHODS: MRI imaging of the lumbar spine was performed with a 3.0-T imager and a dedicated TCL coil to classify lumbar disc herniation and nerve root compression. F wave and H reflex were detected on the patient bilateral tibial nerves using Oxford myoelectricity evoked potential instrument.
RESULTS AND CONCLUSION: Spearman correlation analysis showed that the MRI-based grading of patients with lumbar disc herniation had a negative correlation with F wave frequency (r=-0.594 0, P < 0.000 1), and a positive correlation with F wave latency (r=0.825 6, P < 0.000 1) and H-reflex latency (r=0.875 0, P < 0.000 1), but no correlation with H-reflex amplitude (R=0.117 4, P=0.257 3). With MRI grading increased, F wave frequency was decreased, and F wave and H-reflex latency were prolonged gradually, indicating aggravating nerve root compression.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words:  Lumbar Vertebra, Intervertebral Disk Displacement, Transcutaneous Electric Nerve Stimulation, Tissue Engineering

CLC Number: