title: Comparison of Radiographic Postoperative Outcomes Between Males and Females With AIS.
abstract: The primary aim was to compare postoperative radiographic outcomes between sexes among adolescent idiopathic scoliosis (AIS) patients. A total of 162 AIS patients (42 males and 120 females) undergoing pedicle screw instrumentation and posterior fusion were included. Coronal and sagittal curves and flexibilities were measured and calculated. The postoperative correction rate (CR), fulcrum bending correction index (FBCI), and Cincinnati correction index were evaluated to compare the surgical benefits between sexes.Males were older (16.79 vs 14.79 years, respectively; P < 0.01) and had stiffer curves than females (lateral bending flexibility percentage: 47.77 vs 52.57, respectively, P = 0.21; traction flexibility percentage: 35.48 vs 36.98, respectively, P = 0.98; fulcrum bending flexibility percentage: 56.13 vs 66.57, respectively, P < 0.05). Males and females exhibited similar Lenke classification schemes (P = 0.72), but had different Risser signs (P < 0.01). Although males had greater postoperative curves (20.81° vs 16.83°, respectively; P = 0.009), no obvious differences in the CRs were noted between males and females (FBCI: 145.20% vs 108.37%, respectively; P = 0.92). Smaller preoperative lumbar lordosis was noted in males than in females (40.05° vs 45.72°, respectively; P = 0.03), yet no statistically significant differences in the preoperative and postoperative sagittal curves were observed between the sexes. In conclusion, considering the preoperative flexibilities, the 2 sexes achieved comparable surgical benefits without sacrificing the sagittal balance.
authors.affiliation: From the Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai, People's Republic of China.
authors.forename: Ximing
authors.initials: X
authors.lastname: Xu
authors.forename: Fei
authors.initials: F
authors.lastname: Wang
authors.forename: Xiaoyi
authors.initials: X
authors.lastname: Zhou
authors.forename: Yajun
authors.initials: Y
authors.lastname: Cheng
authors.forename: Xianzhao
authors.initials: X
authors.lastname: Wei
authors.forename: Yushu
authors.initials: Y
authors.lastname: Bai
authors.forename: Ming
authors.initials: M
authors.lastname: Li
mesh_terms: D000293:Adolescent; D001696:Biomechanical Phenomena; D016063:Blood Loss, Surgical; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D065289:Pedicle Screws; D011183:Postoperative Complications / Q000453:epidemiology; D011859:Radiography; D016059:Range of Motion, Articular; D012189:Retrospective Studies; D012600:Scoliosis / Q000000981:diagnostic imaging* / Q000601:surgery*; D012737:Sex Factors; D013123:Spinal Fusion / Q000379:methods*