tailieunhanh - Báo cáo khoa học: "Contribution of the xenograft bone plate-screw system in lumbar transpedicular stabilization of dogs: an in-vitro study"

Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Contribution of the xenograft bone plate-screw system in lumbar transpedicular stabilization of dogs: an in-vitro study | J. Vet. Sci. 2008 9 2 193-196 JOURNAL OF Veterinary Science Contribution of the xenograft bone plate-screw system in lumbar transpedicular stabilization of dogs an in-vitro study 1 012 2 _3 3 11 2 Hakan Salci Sani Sarigul Seref Dogan Huseyin Lekesiz Resat Ozcan O. Sacit Gorgul Kaya Aksoy Department of Surgery Faculty of Veterinary Medicine 2Department of Neurosurgery Faculty of Medicine and department of Machines Faculty of Engineering and Architecture Uludag University Bursa Turkey We performed biomechanical comparison of a xenograft bone plate-screw XBPS system for achieving cadaveric lumbar transpedicular stabilization TS in dogs. Twenty dogs cadaveric L2-4 lumbar specimens were harvested and their muscles were removed but the discs and ligaments were left intact. These specimens were separated to four groups the L2-4 intact group as control group I n 5 the L3 laminectomy and bilateral facetectomy group LBF group II n 5 the LBF plus TS with metal plate-screw group group III n 5 and the LBF plus TS with XBPS group group IV n 5 . Five kinds of biomechanical tests were applied to the specimens flexion extension left-right bending and rotation. The averages of the 16 stiffness values were calculated and then these were statistically analyzed. The statistical results show that the XBPS system contributes spinal stability and this system can be a good choice for achieving TS. Keywords biomechanic dog transpedicular stabilization xenograft bone plate-screw Introduction Since Roy-Camille first introduced the pedicle screw system for achieving stability in the spine various type instruments have been developed for transpedicular stabilization TS 7 . Of these instruments the bone screw-plate is an effective reliable instrument for TS 6 . The transpedicular system was first described by Boucher 2 and the pedicle system was first used by Harrington 4 for spinal stabilization. The pedicle systems provide stabilization between the vertebral segments and so it contributes to .