[Femoral lengthening by transverse diaphyseal osteotomy. Experimental study in the dog].
Previous work has shown that extensive areas of bone necrosis developed after Z-osteotomies of the femoral shaft. A study was made on 11 dogs to compare the effects of a transverse osteotomy followed by immediate lengthening, stabilisation by plates and bone grafting. The bone vitality was studied at 8 and 16 weeks by histological sections and angiography. Attention was focussed on the area of lengthening and the bone ends. The results showed the superiority of transverse osteotomy over Z-osteotomy. Bone necrosis diminished at the 16 th week. In the area of lengthening, the vascularity of the grafts was satisfactory. In contrast, the tendons of the Z-osteotomy showed constant necrosis.
D000818:Animals; D001852:Bone Lengthening / Q000379:methods*; D004285:Dogs; D005269:Femur / Q000601:surgery*; D010020:Osteonecrosis / Q000517:prevention & control; D010027:Osteotomy / Q000379:methods*
Allongement fémoral par ostéotomie diaphysaire transversale. Etude expérimentale chez le chien.