Reikerås O, Skjeldal S, Grøgaard B
Department of Surgery, Ullevål University Hospital, Oslo, Norway.
J Orthop Trauma. 1989;3(1):53-6. doi: 10.1097/00005131-198903010-00010.
The biomechanical effects of intramedullary reaming on the healing of femoral osteotomies were studied. In rats, transverse osteotomies at the midshaft of both femurs were made. On the left side only, reaming of the medullary cavity was performed, and the osteotomies were then stabilized by intramedullary pinning. At 15, 30, 60, and 90 days after osteotomy, the production of callus, the bending moment, and the bending rigidity were evaluated. There were no significant differences in these biomechanical parameters between the right unreamed and the left reamed femurs during the experimental period. The results indicate that reaming of the medullary cavity of diaphyseal bone does not significantly impair or improve the healing of pinned osteotomies in rats.
研究了髓内扩髓对股骨截骨愈合的生物力学影响。在大鼠中，于双侧股骨骨干中部进行横向截骨。仅在左侧进行髓腔扩髓，然后通过髓内穿针固定截骨部位。在截骨后15、30、60和90天，评估骨痂生成、弯矩和抗弯刚度。在实验期间，右侧未扩髓股骨与左侧扩髓股骨之间的这些生物力学参数没有显著差异。结果表明，骨干髓腔扩髓不会显著损害或改善大鼠髓内穿针固定截骨的愈合。
