Can patient-reported outcomes predict re-operations after total hip replacement?

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Abstract

Purpose: We investigated if patient-reported outcomes (PROMs) one year after total hip replacement (THR) can predict the risk of re-operation using data from the Swedish Hip Arthroplasty Register. Methods: A total of 75,899 patients with THR due to osteoarthritis operated in 2002–2014 were included. We used Kaplan-Meier and Cox regression to investigate the relationship between one-year post-operative PROMs and risk of re-operation (all types of further hip surgery). The predictive power of the model and post-operative PROMs were evaluated by concordance index (C). Results: Kaplan-Meier estimates for not being re-operated at eight years was 95.5% (95%CI; 95.3–95.8). Cox regression analyses showed that all PROMs, except for EQ-VAS, were associated with re-operation. The full model had a concordance index of 0.68. Satisfaction (C = 0.65) and pain (C = 0.65) in isolation had the highest predictive power. Conclusions: Worse PROMs predicted higher risk of re-operation. Therefore, we believe PROMs may be helpful in identifying patients at risk for re-operation and timely address their problems.

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Eneqvist, T., Nemes, S., Bülow, E., Mohaddes, M., & Rolfson, O. (2018). Can patient-reported outcomes predict re-operations after total hip replacement? International Orthopaedics, 42(2), 273–279. https://doi.org/10.1007/s00264-017-3711-z

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