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KMID : 1189320120060040233
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Asian Spine Journal
2012 Volume.6 No. 4 p.233 ~ p.240
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Effect of the Number of Involved Spinal Cord Segments on Gait Function in Patients with Cervical Spondylotic Myelopathy
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Yoon Ji-Yeon
Chang Han
Park Kun-Bo
Lee Sang-Jin
Choi Byung-Wan
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Abstract
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Study Design: Retrospective.
Purpose: To determine the effect of severity of cervical spondylotic myelopathy (CSM) on gait parameters according to the number of involved spinal cord segments.
Overview of Literature: Although there are a large number of studies on CSM, almost all studies have focused on hand function and only a few studies have examined the gait function in patients with CSM.
Methods: Twenty-three patients with CSM underwent magnetic resonance imaging and gait analysis. The subjects were divided into 2 groups; group I consisted of 9 patients with a single-level stenotic lesion and group II comprised 14 patients with multi-level stenotic lesions. Gait parameters were compared between the 2 groups and the normal control group.
Results: There was no significant difference in the Japanese Orthopaedic Association score between the 2 groups. Cadence, walking speed, stride length, and step length were decreased in group II compared to group I and normal control group. Peak ankle plantar flexion moments during the stance phase and peak knee flexion angle during the swing phase were decreased in group II. Peak ankle, knee, and hi p power generation during the stance phase were decreased in group II; in addition, the peak ankle power generation was decreased in group II than in the normal control group.
Conclusions: Patients with multi-level stenotic lesions had decreased gait ability compared to that in patients with a single-level stenotic lesion. The number of involved spinal cord segments can be one cause of gait deterioration in patients with CSM. Performing a gait analysis is useful for accurate evaluation of the patient.
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KEYWORD
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Cervical spondylotic myelopathy, Gait analysis, Multi-level
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