Histomorphometric study of growth plate subjected to different mechanical conditions (compression, tension and neutralization):: An experimental study in lambs -: Mechanical growth plate behavior

被引:14
作者
Arriola, F [1 ]
Forriol, F [1 ]
Cañadell, J [1 ]
机构
[1] Univ Navarra, Clin Univ, Sch Med,Dept Orthoped & Traumatol, Orthopaed Res Lab, E-31080 Pamplona, Spain
来源
JOURNAL OF PEDIATRIC ORTHOPAEDICS-PART B | 2001年 / 10卷 / 04期
关键词
growth plate; chondrocytes; histomorphometry; biomechanics; external fixation;
D O I
10.1097/00009957-200110000-00013
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
We studied the morphologic effect of low mechanical stresses (compression, tension and neutralization) on the growth cartilage with an external fixator in IS young lambs. On radiography, we only found more length in the femora subjected to tension (P < 0.05). Bony bridges were not present, nor were there signs of altered vascularization or Ranvier's perichondral ring. Histomorphometrically, in the group subjected to tension, the germinative layer in the femur was higher (P < 0.001) in the bones that had undergone surgery. The proliferative layer was lower in the operated tibia (P < 0.001), and the hypertrophic layer was higher in operated tibias and femora (P < 0.001). In the group subjected to compression, the germinative layer in the femora was higher in the operated bones (P < 0.05); the proliferative layer of the tibia was lower (P < 0.001) and the hypertrophic layer was higher (P < 0.001) in both operated bones. In the neutralization group, the proliferative layer of both operated bones presented lower values (P < 0.001) and the hypertrophic layer was higher (P < 0.001) than that in the control groups.
引用
收藏
页码:334 / 338
页数:5
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