In this study, the investigators propose to develop MRI as a biomarker to detect adverse local tissue reactions for all bearing combinations and modular connections in THA. Individuals indicated for revision THA surgery will be recruited for pre-operative MRI studies, intra-operative tissue sampling for histologic analysis, and post-operative wear analysis of the retrieved implant. Correlations between the MRI datasets and the histologic and wear assessments will be performed and will be used to develop a predictive diagnostic tool for the management of THA patients. This predictive tool will be applied to cohort of individuals with primary THA to longitudinally monitor disease progression in patients with different individual risk factors and implant bearing surfaces.