Early outcome in the surgical treatment of idiopathic scoliosis by „bone on bone” anterior interbody fusion Daniel Zarzycki, Aleksander Winiarski, Grzegorz Makieła, Paweł Radło, Adrian Rymarczyk, Mariusz Kaliciński Ortop Traumatol Rehabil 2005; 7(2):137-142 ICID: 443155
Article type: Original article
IC™ Value: 6.66
Abstract provided by Publisher
Background. The aim of our study was to evaluate a new surgical method developed by Robert Gaines for the treatment of idiopathic scoliosis, called the „bone on bone” procedure.
Material and methods. We examined 100 patients (81 female and 19 male) selected from 259 scoliotic patients operated at our center between 2002 and 2004. The mean age at surgery was 16 years and 2 months (range: 12 yrs, 2 months to 39 yrs). The mean follow-up was 18 months (range: 15-24). The average range of fusion was 5 vertebrae (range 3-6). The mean Cobb angle was 63° (range: 49°-98°). The mean Cobb angle of upper secondary curve was 32° (range: 9°-70°), the lower 32° (range: 7°-740). The mean apical vertebral rotation (AVR) was 30° (range: 15°-55°), apical vertebral translation (AVT) 58 mm (range: 8-110). The average thoracic kyphosis was 19° (range: 8°-40°), and lumbar lordosis 23° (range: 18°-38°).
Technical note. The anterior transthoracic and /or retroperitoneal approach was performed; all discs on the apex of curvature were removed and no bone grafts were used (fusion by contact of vertebrae surfaces). Transvertebral screws were implanted with stabilization by means of a rod.
Results. After surgical treatment the mean Cobb angle was 27° (range 0°-58°), and the correction of the base angle was 58%. The mean Cobb angle of the upper secondary curve was 25° (range: 4°-60°), the lower 19° (range: 1°-56°). The average AVR was 20° (range: 5°-45°), correction was 33%. The mean AVT was 16 mm (range: 0-62 mm), accounting for a 72% correction of basic translation. The average kyphosis after surgical treatment was 26° (range: 15°-45°), lordosis 20° (range: 7°-35°). After a mean 18 months follow-up, the average Cobb angle was 31° (range: 0°-73°), with average 12% loss of correction. The mean upper secondary curve was 25° (range: 5°-62°), the lower 21° (range: 2°-55°). The average thoracic kyphosis was 28° (range: 14°-48°), lordosis 21° (range: 7°-37°). The mean AVR and AVT remained at the same level after follow-up.
Conclusions. The „bone on bone” procedure allows the surgeon to decrease the number of segments involved in spinal fusion, and gives high correction of idiopathic scoliosis with a low rate of operative complications.
ICID 443155 PMID 17615504 - click here to show this article in PubMed