[A Cloward-type bone-harvesting technic in the management of pseudarthrosis of the navicular bone].

Authors present an apparatus resembling the Cloward instrument, that can be however used more simply and safely for gaining a good quality cortico-spongious cylinder from the iliac wing. The functioning of the bone gaining instrument and the process of bone gaining is described. The apparatus was used in more than 100 cases for filling up with spongious bone chips the cavity arising after the cleaning of the pseudarthrosis of the navicular bone. Three different cases are presented to demonstrate the alternative applications of the apparatus. It is supported by literary data that the autologous bone gained from the iliac wing is the most suitable for transplantation.