Assessment of the primary rotational stability of uncemented hip stems using an analytical model - comparison with finite element analyses

Description: Sufficient primary stability is a prerequisite for the clinical success of cementless implants. Therefore, it is important to have an estimation of the primary stability that can be achieved with new stem designs in a pre-clinical trial. Fast assessment of the primary stability is also useful in the preoperative planning of total hip replacements, and to an even larger extent in intraoperatively custom-made prosthesis systems, which result in a wide variety of stem geometries.
Maria E Zeman , Nicolas Sauwen , Luc Labey , Michiel Mulier , Georges Van der Perre and Siegfried VN Jaecques Journal of Orthopaedic Surgery and Research 2008, 3:44 Full text available