COSTAL HUMPBACK RESECTION AS A FINAL STAGE OF IDIOPATHIC SCOLIOSIS SURGICAL TREATMENT

Objective. To analyse results of multistage surgical treatment of idiopathic scoliosis including costal humpback resection. Material and Methods. From 1996 to 2005 twenty girls with idiopathic scoliosis underwent spine deformity correction with Harrington distraction rod with Drummond interspinous wires (Group I) or with Cotrel – Dubousset Horizon Instrumentation (Group II). The final long-dated stage after correction of deformity included the costal humpback resection at the convex side only. Radiologic and topographic examinations were performed, and lung vital capacity parameter was used for lung function assessment. Patients answered the Russian version of SRS-24 questionnaire after correction and at each follow-up examination. Results. In Group I the mean curvature was 81.7° ± 26.7° (range, 55–107°) before correction and 34.5° ± 13.1° after correction (primary curve correction 57.8 ± 14.1 %). Mean correction loss in dynamics before resection was 8°, after resection 4.3°. In Group II the primary curve magnitude before correction was 87.4° ± 27.1° (range, 48–126°), after correction 42.7° ± 16.9° (primary curve correction 51.9 ± 9.6 %). Average correction loss in dynamics before resection was 3.5°, after resection 2.4°. Spirometric findings presented the following dynamics: lung vital capacity before resection was 1980 ml with mean early postoperative decrease by 16.8 % and subsequent reversion to the preoperative level or increase to 2010 ml. According to the questionnaire survey 100 patients gave the consent for surgery. Conclusion. Costal humpback resection as a cosmetic intervention improves the patient’s assessment of spine deformity surgical correction result.