Evaluation of fulcrum bending radiograph for predicting curve flexibility and surgical correction result of adolescent idiopathic scoliosis
- VernacularTitle:Fulcrum像评价青少年特发性脊柱侧凸柔韧性和预测矫形的意义
- Author:
Qi FEI
;
Yipeng WANG
;
Guixing QIU
- Publication Type:Journal Article
- Keywords:
idiopathic scoliosis: flexibility: radiography
- From:
Orthopedic Journal of China
2006;0(23):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]A prospective comparative evaluation of fulcrum bending radiographs(fulcrum)to determine curve flexibility and predict surgical correction in adolescent idiopathic scoliosis(AIS).[Method]A total of 64 consecutive patients with AlS according to inclusion and exclusion criterias who underwent surgical treatment were studied.All curve types were single-curve and the PUMC classification were Ia/Ib/Ic.All patients were divided into 4 groups according to the magnitude of Cobbs angle in preoperative standing anteroposterior radiograph:moderate thoracic curve(20 cases,40?60?),moderate lumbar curve(21cases,35?60?).The Cobbs angles were measured and the flexibility ratio was determined on fulcrum radiograph.The amount of correction obtained by fulcrum radiograph was compared with the amount of surgical correction by evaluating the differences from surgery as absolute values.The correlation of Cobbs angles between postoperative standing anteroposterior radiograph and fulcrum radiograph were analyzed.[Result]For the moderate thoracic curves,curve flexibility provided by fulcrum radiograph has no significant difference(P=0.141)from surgical curve correction,there was no significant difference(P=0.094)between the mean Cobbs angle on fulcrum bending and that on postoperative standing anteroposterior radiograph.The postoperative Cobbs angle was positively correlated with the preoperative Cobbs angle on fulcrum radiograph and the correlation degree in the moderate lumbar curve was relatively weak.[Conclusion]Fulcrum radiograph can only be used to assess the flexibility and correction of moderate thoracic curves in AIS.Pedicle screw instrumentation provides even more correction.
