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KMID : 0388720240310010001
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Journal of Korean Society of Spine Surgery
2024 Volume.31 No. 1 p.1 ~ p.9
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Gait Parameters in Ankylosing Spondylitis Measured with Shoe-Type Wearable Sensors
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Cho Yoon-Jae
Choi Min-Jun
Kim Han-Sol
Goh Tae-Sik
Lee Jung-Sub
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Abstract
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Study Design: A prospective study.
Objectives: To identify gait parameters in ankylosing spondylitis (AS) using a shoe-type inertial measurement unit (IMU) system.
Summary of Literature Review: Foot-positioned IMU systems could help to evaluate gait characteristics.
Materials and Methods: In total, 126 AS patients and 118 controls made up the intervention and control groups. The participants underwent quantitative gait analysis with shoe-type sensors and completed clinical questionnaires. The phase coordination index (PCI), gait asymmetry (GA), step length, cadence, walking speed, stance phase, single support, and double support were analyzed as kinematic gait parameters. The presence of HLA-B27, the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), and the modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS) were evaluated. Statistical analyses were conducted to identify different characteristics between groups.
Results: The two groups showed significantly different kinematic parameters: AS patients showed lower walking speed, larger step length, increased stance phase, decreased single support, increased double support, and higher GA than normal controls. However, in terms of cadence and PCI, significant differences were not identified (p>0.05). Regarding differences in subgroups according to the presence of HLA-B27 and scores on the mSASSS and BASDAI, most gait parameters were not significantly different between AS subgroups.
Conclusions: The study showed that gait parameters measured with a shoe-type IMU system in AS patients were significantly different from those in the general population. Neither the presence of HLA-B27 nor mSASSS and BASDAI scores influenced the gait parameters of AS patients.
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KEYWORD
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Ankylosing spondylitis, Gait, Shoe-type, Inertial measurement unit
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