Objective.To introduce a new spinal internal fixation system,Texas Scottih Rite Hospital (TSRH),and to investigate its early clinical outcomes.Methods.The preliminary clinical outcomes of 15 patients with thoracolumbar or lumbar scoliosis treated by anterior spinal fusion with TSRH instrumentation were studied retrospectively.Fourteen patients were diagnosed as idiopathic scoliosis and 1 as neuromuscular scoliosis.Results.Preoperatively,the Cobb's angle on the coronal plane was 55.8°(range 35°-78°),and 14° postoperatively,with an average correction of 74.8%.The average unfused thoracial curve was 35.9° preoperatively(range 26°-51°)and 21.8°(10°-42°)postoperatively,with 40% correction.The sagittal curve of lumbar was kept physiologically ,preoperative 27.9° and postoperative 25.7° respectively.The trunk shift was 13.4mm(5-28mm) preoperatively and 3.5mm(0-7mm) postoperatively.The averaged apic vertebra derivation was 47.8mm(21-69mm) before operation and 10.8mm(3-20mm) after operation.The distance of C7 to center sacrum vertical line(CSVL) was 19.5mm(16-42)preoperatively and 11.3mm(0-32mm)postoperatively.The apical vertebra rotation was 3 degree in 15 patients preoperatively,and were improved to normal in 10 patients,1 degree in 4 patients,and 2 degree in 1 patients postoperatively.None had neurological injury and infection.Only 1 patient complained a cool feeling in the low extremity of concave side,and the symtom vanished at 3-month followed up.Couclusion.If used appropriately,TSRH anterior spinal system is a good treatment for low thoracic or thoracic lumbar scoliosis.
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