Peltonen J, Karaharju E, Aalto K, Alitalo I, Hietaniemi K
Department of Orthopaedics and Traumatology, University Central Hospital, Helsinki, Finland.
J Pediatr Orthop. 1988 Sep-Oct;8(5):509-12. doi: 10.1097/01241398-198809000-00001.
Osteotomy and gradual distraction of the distal radius was performed on 12 sheep. After 3-6 weeks of daily distraction by external fixation, lengthening of 0.5-1.8 cm was achieved. Three weeks after distraction was begun, striae of new bone, organized in the direction of the distraction, were noted radiologically. The bony consolidation developed from the osteotomized bone ends to the center of the distraction area. Medullary structures also contributed to bone formation in the distraction area. Collagen bundles, organized in the direction of distraction, formed a template for the developing bone. The medullary canal remodeled 16 weeks after the operation. Solid bone formed after the distraction procedure with no additional bone transplantation.
对12只绵羊进行了桡骨远端截骨术和逐步牵张。通过外固定每日牵张3 - 6周后，实现了0.5 - 1.8厘米的延长。开始牵张3周后，放射学检查发现有沿牵张方向排列的新骨条纹。骨愈合从截骨的骨端向牵张区域的中心发展。骨髓结构也有助于牵张区域的骨形成。沿牵张方向排列的胶原束为正在形成的骨提供了模板。术后16周髓腔进行了重塑。牵张过程后形成了坚实的骨，无需额外的骨移植。
