Relationship between orthopedic surgery for adolescent idiopathic scoliosis and leg length discrepancy / 第二军医大学学报

ABSTRACT

Objective To explore the relationship between leg length discrepancy (LLD) and scoliosis in adolescent idiopathic scoliosis (AIS) patients, and to analyze the improvement of LLD after orthopaedic surgery and the risk factors. Methods The clinical data were collected from 85 AIS patients admitted to Department of Spine Surgery of Changhai Hospital, Naval Medical University (Second Military Medical University) from Jan. 2010 to Jan. 2013. The height difference of bilateral femoral head (HD-bFH) on standing X-ray images and the changes of HD-bFH after orthopaedic surgery were measured using the imaging data before operation and 2 years after operation. According to preoperative HD-bFH, the patients were divided into non-LLD group (HD-bFH0.05). Postoperative change of HD-bFH was correlated with Risser sign (rs=-0.512, P=0.020) and the orthopedic degree of lumbar curvature (r=-0.605, P=0.018). Conclusion The prevalence of LLD is 36.5% in AIS patients. Changes of leg length in AIS patients are closely related to orthopedic surgery, and the orthopedic degree of lumbar curvature and Risser sign are the risk factors.