[Biomechanical studies of forces occurring in the Ilizarov and Orthofix apparatuses during limb lengthening by distractive osteogenesis]. / Biomechaniczne badania sil wystepujacych w ukladzie aparat Ilizarowa-konczyna i aparat Orthofix-konczyna podczas wydluzania metoda osteogenezy dystrakcyjnej.

ABSTRACT

The magnitude of the distractive forces occurring in the Ilizarov and Orthofix apparatuses during limb lengthening by distractive osteogenesis has been investigated. Eighteen patients treated between 1995 and 1998 were included in the study. The data obtained were computerized and related to clinical, radiographic and sonographic findings. Typical and repeatable graphs of forces were found during the process of lengthening as well as typical relationships between the callus and the values of distractive forces.