Publicações científicas

Mechanical analysis of the healing of different osteotomies fixed externally

Mora G., Forriol F.
Department of Orthopaedic Surgery, University Clinic, School of Medicine, University of Navarra, Avda Pio XII sn, 31008 Pamplona, Spain

Revisão:Springer Berlin

Data: 1/Jan/2000

Cirurgia Ortopédica e Traumatologia [ES]

Under standard conditions the left tibia was osteotomised in nine sheep. The osteotomy was transverse in six, and oblique in three. The osteotomies were fixated using a strain-gauge-monitored unilateral external fixator.

The fixation was rigid in three sheep with a transverse osteotomy (group 1) and also in three sheep with an oblique osteotomy (group 2). The fixation was dynamic in three sheep with a transverse osteotomy (group 3) using a roller-bearing mechanism allowing 1 mm of axial displacement.

The bone callus stiffness increased progressively with time. One month after osteotomy the load force through the fixator in groups 1 and 2 was more than 20%, whereas the equivalent load force in group 3 was only about 5%.

CITAÇÃO DO ARTIGO  Int Orthop. 2000;24(5):295-8

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