In-vitro Prediction of Cemented and Non-cemented Revision Stem Stability in Impaction Bone Grafting

BONE GRAFTING +*Mak, S Y; *Smith, S D; *Miles, A W +*Centre for Orthopaedic Biomechanics, University of Bath, UK [email protected] INTRODUCTION: Impaction bone grafting (IBG) has been used in revision hip replacement for more than 15 years. The objective is to impact allograft bone chips into the medullary canal to compensate for bone stock loss after failed primary hip replacement. Initial stability is crucial for osteointegration. A previous study attempted to assess the initial stability of cemented and non-cemented stems [1]. It was concluded that in the absence of cement, the graft could not provide sufficient stability. The aim of this study was to investigate the use of a large non-cemented stem with IBG, and to compare this with a smaller cemented stem to ascertain if sufficient stability could be achieved.