PMID: 3771025Jan 1, 1986Paper

Bone lengthening by physial distraction. An experimental study

International Orthopaedics
J de PablosJ Cañadell

Abstract

Experimental physial distraction was carried out in the distal part of the femur in 45 two-month old lambs in order to study the basic mechanisms of lengthening as well as the viability of the growth cartilage after using this method. The animals were divided into three groups (A, B and C), and each group into three subgroups (1, 2 and 3) according to the rate of distraction used (2 mm/day, 1 mm/day, 0.5 mm/day) and the time of sacrifice. The results obtained show that the basic lengthening mechanisms consists, firstly, in the production of a fracture between the metaphysis and the epiphysis and, secondly, that the lower the distraction speed employed, the greater is the short-term and long-term viability of the growth cartilage. Optimum viability was observed at a distraction rate of 0.5 mm/day. On this basis we conclude that in clinical practice physical distraction could be indicated for children at an early stage of skeletal growth and repeated later provided that the rate of distraction is kept within reasonable limits.

Citations

Apr 1, 1989·Acta Orthopaedica Scandinavica·A J SprigginsJ Kenwright
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Apr 1, 1992·Acta Orthopaedica Scandinavica·C HamanishiK Tamura
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Dec 29, 2011·Clinical Orthopaedics and Related Research·Michael BetzG Ulrich Exner
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Sep 1, 1996·The Journal of Foot and Ankle Surgery : Official Publication of the American College of Foot and Ankle Surgeons·D E MartinB E Wesselowski

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