Bone lengthening by means of písela distraction has been used from quite a time taking advance of the physeal plate as the point of distraction, sparing the metaphysis from the epiphysis. There are several systems and lengthening protocols, with certain controversy about producing a fracture or an epiphysiolisis to initiate distraction. In our study we have assessed by means of histomorphometry and histology the initial phases of physeal distraction, with a pattern of elongation of 0,5 mm per day using an exterenal fixator applied to the right femur by means of four Kirschner wires, the left femur serving as a control. The results were statiscally analysed using the t-tests for paired data and the wilcoxon matched pairs test.... [Leer más...]