Conclusions
In conclusion, in this study, we found that compared to loosening/wear/osteolysis, operative diagnosis of dislocation/fracture/instability/non-union and failed prior arthroplasty/infection were each associated with higher risk of moderate-severe ADL limitation at 2-years. We did not observe any significant association between operative diagnosis and moderate-severe pain. The findings from our study can be used to better inform the patients about expected pain and function outcomes of revision THA. More work is needed to assess the reasons as to why the operative diagnosis is associated with ADL limitations and not pain in patients undergoing revision THA.