Biomechanical Analysis of Acetabular Defects Reconstruction with Impaction Bone Grafting in Revision Total Hip Arthroplasty

Abstract

An objective of this study is to investigate the influence of an amount of mixture of hydroxyapatite (HA) granules and morsellised cancellous bone (MCB) on the initial stability of reconstructed acetabulum through mechanical testing. Reconstruction was carried out using impaction bone grafting technique with four mixture ratio, then, cyclically loaded as a simulation of the motion of gait and analyzed the migration. The initial stability is highly dependent on mixture ratio and larger HA mixture ratio could give us better initial stability of the cup.