The effect of growing Rod treatment on coronal balance during serial lengthening surgeries in early onset scoliosis

BMC Musculoskeletal Disorders

Research Article

Shu-gang Li¹  Jian-xiong Shen¹  Zhi-jian Sun¹  Wen-jing Li¹  Gui-xing Qiu¹  Yu Zhao¹  Hong Zhao¹  Jian-guo Zhang¹  Yi-peng Wang¹  Shi-gong Guo² 

[1] Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Dong Cheng District Shuai Fu Yuan No.1, 100730, Beijing, China;Department of Trauma & Orthopaedic Surgery, Lister Hospital, Stevenage, UK;

关键词: Coronal balance;    Growing rod;    Early onset scoliosis;    Lengthening surgery;   

DOI  :  10.1186/s12891-016-1007-x

 received in 2015-08-17, accepted in 2016-04-01,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundGaining and maintaining spinal balance after surgery is of great importance for early onset scoliosis (EOS). However, tendency of balance on the coronal plane after growing rod surgery has not been studied before. This study evaluated the effect of growing rod treatment on coronal balance (CB) during serial lengthening surgeries in EOS.MethodsAll EOS patients treated with growing rod technique in our hospital from August 2002 to June 2014 were retrospectively reviewed. Radiographic data before the sixth lengthening surgery were measured on the posteroanterior X-ray images, including global CB (C7 plumbline-central sacral vertical line, C7PL-CSVL), regional CB (apical vertebrae-CSVL), Cobb angle of the main curve and pelvic inlet width (PIW). Global CB index and regional CB index were calculated as dividing global CB and regional CB by PIW, respectively. The changes of these parameters during repeated lengthening surgeries were analyzed.ResultsFive hundred seventy Radiographs of 67 patients, including 134 images before and after growing rod insertion surgeries and 436 images pre- and post-lengthening surgeries were measured. Global CB and global CB index did not show significant differences between every two set points during lengthening procedures (P > 0.05). The percentage of patients with C7PL-CSVL distance more than 20 mm roughly ranged from 30 to 45 % during the lengthening process. With regards to regional CB and main curve Cobb angles, there were significant differences between every two adjacent set points during the first five lengthening surgeries (P < 0.05).ConclusionsGlobal CB did not significantly change during serial lengthening surgeries and C7PL-CSVL distances of greater than 20 mm comprised of over one third of patients during growing rod treatment. However, worsening regional CB and Cobb angles of the main curve during lengthening intervals were corrected by lengthening manipulation and maintained at a stable level.

【 授权许可】

CC BY   
© Li et al. 2016