The selection of fusion levels using torsional correction techniques in the surgical treatment of idiopathic scoliosis.

摘要: Study Design. This is a retrospective, consecutive case series, with the index patient included. Objectives. To evaluate evolution and effectiveness of instrumentation techniques designed to untwist scoliosis deformity. Summary Background Data. Three-dimensional studies idiopathic deformity are consistent theory that or deformities evolve as an imperfect torsion torsions. Methods. From 1989 through 1995, 102 patients (84 females, 18 males) underwent surgery increasing emphasis on torsional correction. One hundred (98%), average age 14.3 years (range, 10.5–20.8 years), were observed for 40 months 24–81 months). The upper instrumented vertebra evolved be centered vertebra. lower was chosen based its ability become horizontal contralateral bend radiographs termed caudal foundation Because these over first 3 study period, split analysis performed improvements in correction maintenance course study. Results. Cobb angle 59° before surgery, 18° after (69% correction), 22° (63% correction) at latest follow-up. A comparison half series second showed no significant demographic differences. Curve significantly improved King–Moe IIB (thoracolumbar–lumbar curve only), III, V types series. In last 4 years, follow-up curves 61% thoracic 65% thoracolumbar–lumbar curve. III had 68% correction, 50% high 72% Thoracolumbar, lumbar, I averaged 81% inclination improvement 1 year maintained Conclusions. method selecting levels while using safe reliable. results appear provide compared historical controls. [Key Words:idiopathic scoliosis, Isola instrumentation]