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Customised femoral stems in osteopetrosis and the development of a guiding system for the preparation of an intramedullary cavity


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Traditional techniques for the insertion of femoral stems in arthroplasty of the hip in osteopetrosis carry a considerable risk of penetration of the femoral cortex and intra-operative fractures, due to obliteration of the intramedullary cavity and greatly increased stiffness and brittleness of the bone. In order to reduce the risk of such complications we manufactured a customised stem and a computer-based guiding device for the preparation of a cavity within the proximal femur. This system was used successfully in three hips in two patients. We describe the system and the operative technique.

Correspondence should be sent to Professor P. Benum; e-mail: pal.benum@ntnu.no

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