胫骨骨干端延长对胫骨生长板纵向生长的影响

[目的]研究胫骨骨干端截骨延长对胫骨生长板和纵向生长的影响。[方法]建立兔胫骨骨干端截骨和延长的动物模型;拍摄标准胫骨放射照片以测量其长度,胫骨远近端骨骺生长板做成组织切片以测量其厚度。[结果]胫骨中部骨干行单纯截骨后,增加胫骨纵向生长和胫骨远近端骨骺生长板的厚度,胫骨中部骨干行截骨延长后,胫骨纵向生长和胫骨远近端骨骺生长板的厚度没有改变。[结论]胫骨骨干截骨延长术不会妨碍胫骨的纵向生长。

Effect of tibial diaphyseal lengthening on the longitudinal growth of the tibia

[Objective]To study the effect of tibial diaphyseal lengthening on the longitudinal growth of the tibia.[Method]Rabbit models of tibial diaphyseal lengthening and tibial osteotomy were established.Standard radiography of the tibia was taken and the length of the tibia was measured.Histology of the proximal and distal tibia was made and the thickness of the growth plate was measured.[Result]Tibial osteotomy alone stimulated the longitudinal growth of the tibia and increased the thickness of the growth plate.However,tibial diaphyseal lengthening suppressed this stimulation resulting in natural longitudinal growth and normal thickness of the growth plate that matched the normal side.[Conclusion]Diaphyseal lengthening of tibia does not inhibit the longitudinal growth of the tibia.