Convened under the auspicious of esteemed endorsers - ISTA

This was the patient with revision of a initial THR performed in France.The indications for THR in BF differ significantly form the indications we find in Belgium. Wealso find the average case in BF more challenging. During the years we have developed specificstrategies and schemes based on our experience and the technical problems encountered duringthe operations.Specific tips and tricks regarding patient selection, technique and equipment will be presented.This can be a good opportunity to learn from our experience for anyone who wants to set up asimilar program.Thursday, October 7, 2010, 14:00-14:40Session A5: Hip MechanicsAn in-Vitro Long Term Performance Evaluation of a Thin Acetabular ShellWith in-Growth Coating*Mayur Thakore - Stryker - Mahwah, USAHoogerhyde Duane - Stryker - Mahwah, USAChristina DAnjou - Stryker - Mahwah,Arlen Hanssen - Mayo Clinic - Rochester, USAGregg Schmidig - Stryker Orthopaedics - mahwah, usa*Email: mayur.thakore@stryker.comRevision total hip replacements are likely to have higher complication rates than primaryprocedures due to the poor quality of the original bone. This may be constrained to achieveadequate fixation strength to prevent future “aseptic loosening” [1]. A thin, slightly flexible,acetabular component with a three dimensional, titanium foam in-growth surface has beendeveloped to compensate for inferior bone quality and decreased contact area between the hostbone and implant by better distributing loads across the remaining acetabulum in a revisionsituation. This is assumed to result in more uniform bone apposition to the implant byminimizing stress concentrations at the implant/bone contact points that may be associated witha thicker, stiffer acetabular component, resulting in improved implant performance.[2] Toassemble the liner to the shell, the use of PMMA bone cement is recommended at the interfacebetween the polyethylene insert and the acetabular shell as a locking mechanism configurationmay not be ideal due to the flexibility in the shell [3].The purpose of this study was to quantify the mechanical integrity of a thin acetabular shellwith a cemented liner in a laboratory bench-top total hip revision condition. Two-point loadingin an unsupported cavity was created in a polyurethane foam block to mimic the contact of theanterior and posterior columns in an acetabulum with superior and inferior defects. Thissimulates the deformation in an acetabular shell when loaded anatomically [4]. The applicationhas been extended to evaluate the fatigue performance of the Titanium metal foam RevisionNon-Modular Shell Sequentially Cross Linked PE All-Poly Inserts and its influence on linerfixation.Referencesfile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]