TWIST Femoral stem is the result of 15 years of experience in the design of tailor-made stems through the study of femoral morphotypes made by scan image reconstruction. The posterior endo-cortical support of its sagittal curvature provides blocking in rotation and an excellent primary stability. Metaphyseal Press Fit ensures a very good anchorage. Polybrillant thinned neck without extraction hole for minimizing wear of the polyethylene in case of neck/polyethylene contact. Distal Cone-shaped allowing to avoid diaphyseal contact to limit post-operative pain.