The Application Research of New Fulrum Bending X-ray Films in Scoliosis

Abstract：Objective to explore the effectof new fulcrum bending film technique on fusion strategy of adolescent id-iopathic scoliosis.Methods Based on new-designed fulcrum bending film technique,the fusion level of 23 AIS patients, which enrolled from June 2013 to April 2014,was identified before scoliosis operation.The study cohort had a mean age of 14.8 years(10~19 years)of which 18 were female and 5 male.AS regarded to Lenke classification,there 13 type 1AN,4 type 1BN,1 type 1A- and 5 type 1CN.Besides radiological measurements were taken from Long-cassette standing anteroposterior film preoperative,immediate postoperative(1 week)and latest follow-up,fulcrum bending film was measured preoperatively.According to magnitude of Cobb angle,reservation of fusion segments could be calculated. Results there was no statistically different between average Cobb angle of new fulcrum bending film preoperatively and that of anteroposterior standing film immediate postoperative(t=0.7,P=0.483);and no significant changes appeared in the period from immediate postoperative to latest visit (t=5.5,P=0.001).17 of 23 population reserved one more motion segments compared with traditional Harrington technique.Conclusion New fulcrum bending film technique could safely evaluated the selection of fusion level in AIS patients.In contrast with traditional method,it could reserve more fusion vertebrae,saving more motion segments of spine.