The effect of various intramedullary stems on the strains in bone stock after implantation of tumor-endo-protheses

摘要

The implantation of tumour-endoprostheses is one of the major concepts in the treatment of musculo-skeletal tumours. Aseptic loosening which is often due to stress shielding meanwhile has become the most common mode of implant failure. In thisstudy the influence of stem length and material on the strains of the bone stock was investigated. It was found that stem length is the major factor and the material of the stem is secondarily influencing the strains in periprosthetic bone.