Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (11): 1774-1779.doi: 10.3969/j.issn.2095-4344.2014.11.022

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Evaluation of gait characteristics of cervical spondylotic myelopathy patients by a portable gait analyzer

Liu Yan-cheng1, 2, 3, Xia Qun3, Hu Yong-cheng4, Zhang Ji-dong3, Bai Jian-qiang3, Ji Ning3, Zhang Kuan1, 2   

  1. 1School of Biomedical Engineering, Capital Medical University, Beijing 100069, China; 2Beijing Key Laboratory of Applied Basic Research Concerning Clinical Biomechanics, Capital Medical University, Beijing 100069, China; 3Department of Spinal Surgery, Tianjin Hospital, Tianjin 300211, China; 4Department of Bone Tumor, Tianjin Hospital, Tianjin 300211, China
  • Revised:2014-02-11 Online:2014-03-12 Published:2014-03-12
  • Contact: Zhang Kuan, School of Biomedical Engineering, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Applied Basic Research Concerning Clinical Biomechanics, Capital Medical University, Beijing 100069, China
  • About author:Liu Yan-cheng, Studying for doctorate, Attending physician, School of Biomedical Engineering, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Applied Basic Research Concerning Clinical Biomechanics, Capital Medical University, Beijing 100069, China; Department of Spinal Surgery, Tianjin Hospital, Tianjin 300211, China
  • Supported by:

    Specialized Research Fund for the Doctoral Program of Higher Education, No. 20121107110018; Natural Science Foundation of Beijing ＆ Key Project of Scientific and Technology Development Plan of Beijing Education Ministry, No. KZ201310025010

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Abstract:

BACKGROUND: Gait deviations are the important diagnosis criteria and surgical indications of cervical myelopathy. Conventional three-dimensional gait laboratory failed to apply in clinics due to complex operations and time consuming. In recent years, a portable gait analyzer based on the micro-sensors is emerging and developing, it has been verified by clinical practice, allowing gait analysis in the ward.

OBJECTIVE: To quantitatively analyze gait characteristics of patients with cervical spondylotic myelopathy (CSM) by a portable gait analyzer.
METHODS: From March 2013 to November 2013, 15 CSM patients and 30 healthy subjects were enrolled in the study. The involved patients were accompanied by gait abnormalities. A portable gait analyzer was used for gait analysis. Subjects walked on a 30-meter corridor back and forth for 120 meters. Totally 12 gait parameters were involved in this study, including seven common parameters (single limb support, double limb support, gait cycle, speed, cadence, step length and stride length) and five new parameters (pulling acceleration, swing power, ground impact, foot fall, and pre-swing angle). Three patients underwent cervical decompression surgery. The gait characteristics were re-evaluated one week later, carrying neck support.

RESULTS AND CONCLUSION: The double limb support and gait cycle duration of CSM group were significantly longer than control group (P < 0.05). Speed, cadence, step length, stride length, swing power, ground impact, foot fall, and pre-swing angle of CSM patients were significantly smaller than healthy subjects (P < 0.05). No differences were found in single limb support and pulling acceleration (P > 0.05). after cervical decompression surgery, the mean remission rate of Japanese Orthopedics Association scores was 32.5% and lower limb acceleration was improved obviously in the graph one week after surgery. Varying degree of correlation was seen between Japanese Orthopedics Association scores and the detected 12 gait parameters in CSM patients. The portable gait analyzer can effective measure the pathological gait deviation in CSM patients with abnormal gaits, and assists to evaluate the lower limb functions.



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


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Key words: cervical vertebrae, gait, lower extremity, decompression, surgery

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