Biomechanical analysis of lower limbs in adolescents patients with idiopathic scoliosis / 中华物理医学与康复杂志

ABSTRACT

Objective To analyze the biomechanical properties of the lower limb in patients with adolescent idiopathic scoliosis (AIS),and to explore the relationship between the biomechanical anomaly of lower limbs and AIS.Methods A total of 116 AIS patients were recruited as the observation group,and another 116 healthy counterparts were selected as the control group.The biomechanical properties of the lower limbs including the torsion angle of the tibia,forefoot-rearfoot angle,rotation angle of the hip joint,leg length difference,and pronation of the ankle were measured and compared between the 2 groups.Then multiple factors regression analysis was conducted to reveal the risking factors for AIS.Results Significant differences were observed between the AIS group and the control group in the leg length difference [(5.94±6.07) mm vs (0.74±2.20)mm] and forefoot-rearfoot angle [(0.17±4.72) ° vs (-0.46±3.60)°] (P＜0.01).In the AIS group,significant differences were found in the rotation amplitude of the left and right ankle,with a difference of-1.27° at standard deviation of 3.28 (P＜0.01).Multi-factor regression analysis indicated that the leg length difference and forefootrearfoot angle were risk factors for AIS.The odds ratio of the leg length difference and forefoot-rearfoot angle were 1.45 and 0.97,respectively.Conclusions The leg length difference and forefoot-rearfoot angle are risk factors for AIS.