目的了解牛皮质骨棒对动物关节内骨折的内固定作用。方法１４只新西兰大白兔制成右股骨髁间骨折模型，用牛骨棒行内固定。术后１，２，４，６，８，１０，１２周分批处死动物进行放射学、组织学检查。结果术后４周所有骨折均完全愈合，随着时间延长，牛骨棒亦逐渐吸收，但炎症反应一直存在。结论牛皮质骨棒作为一种新型内固定材料具有良好的固定效果和生物相容性 Objective To understand the effect of bovine cortical bone rods on the internal fixation of animal intra-articular fractures. Methods Fourteen New Zealand white rabbits were made into the right femoral condylar fracture model and were fixed with bones and rods. Animals were sacrificed at 1, 2, 4, 6, 8, 10 and 12 weeks after operation for radiological and histological examination. Results All fractures were completely healed 4 weeks after operation. As time went on, bovine bone rods gradually absorbed, but the inflammatory reaction persisted. Conclusion The bovine cortical bone rod has a good fixation effect and biocompatibility as a new type of internal fixation material