Posterior selective thoracic fusion in adolescent idiopathic scoliosis.
OBJECTIVE
To define the criteria of posterior selective thoracic fusion in patients with adolescent idiopathic scoliosis.


METHODS
By reviewing the medical records and roentgenograms of 17 patients with adolescent idiopathic scoliosis who underwent posterior selective thoracic fusion, the curve type, Cobb angle, apical vertebral rotation and translation, trunk shift, and thoracolumbar kyphosis were measured and analyzed.


RESULTS
There were 17 King type II patients (PUMC type: IIb, 13, IIc3 4). The coronal Cobb angle of thoracic curve before and after operation were 56.9 degrees and 21.6 degrees respectively, the mean correction rate was 60.1%. The coronal Cobb angle of lumbar curve before and after operation were 34.8 degrees and 12.1 degrees respectively, and the mean spontaneous correction rate was 64.8%. At final follow-up, the coronal Cobb angle of thoracic and lumbar curve were 23.5 degrees and 15.2 degrees respectively, there were no significant changes in the coronal Cobb angle, apical vertebral translation and rotation compared with that after operation. One patient had 12 degrees of thoracolumbar kyphosis after operation, no progression was noted at final follow-up. There was no trunk decompensation or deterioration of the lumbar curve. In this group, 3.9 levels were saved compared with fusing both the thoracic and lumbar curves.


CONCLUSIONS
Posterior selective thoracic fusion can be safely and effectively performed in King type II patients with a moderate and flexible lumbar curve, which can save more mobile segments and at the same time can maintain a good coronal and sagittal balance.
Yu
Bin
B
Department of Orthopedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730.
Zhang
Jian-guo
JG
Qiu
Gui-xing
GX
Wang
Yi-peng
YP
Weng
Xi-sheng
XS
D000293:Adolescent; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011859:Radiography; D012189:Retrospective Studies; D012600:Scoliosis / Q000000981:diagnostic imaging / Q000601:surgery*; D013123:Spinal Fusion / Q000379:methods*; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery*