Abstract
This study aimed to compare the results of gait analysis of adolescent idiopathic scoliosis (AIS) patients and healthy subjects through a meta-analysis of the existing research. The Medline (via PubMed), Cochrane, Scopus, and Embase databases were searched for studies that evaluated the findings of AIS, including spatiotemporal parameters (walking speed, step length, cadence, and stance phase duration), segmental kinematics (frontal, sagittal, and transverse pelvic motion), and electromyographic variables (electrical activity of the quadratus lumborum, erector spinae, and gluteus medius), and were published between January 2000 and May 2020. Two authors extracted the data independently, and any discrepancies regarding the eligibility of retrieved studies were resolved by a consensus. Six comparative studies were identified and subsequently analyzed. It was found that the stance phase and frontal pelvic motion were significantly reduced in AIS patients compared with healthy controls. No significant difference was observed for speed, step length, cadence, sagittal pelvic motion, and transverse pelvic motion. The electrical activity durations of the quadratus lumborum, erector spinae, and gluteus medius were significantly increased in the AIS group compared with healthy subjects. Despite the heterogeneity, a limited number of meta-analyses showed reduced stance phase and frontal pelvic motion with prolonged activation timing of the quadratus lumborum, erector spinae, and gluteus medius muscles. Hence, further large-scale, multicenter studies are required to validate our results.
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