| Summary: | Lindsay K Smith,1 Emma Dures,2 AD Beswick31Department of Trauma and Orthopaedics, Weston Area Health NHS Trust, Weston-super-Mare, North Somerset, UK; 2Centre for Health and Clinical Research, University of the West of England, Bristol, UK; 3Musculoskeletal Research Unit, University of Bristol, Bristol, UKObjectives: Total hip arthroplasty (THA) is highly successful but national registries indicate that average age has lowered and that younger patients are at higher risk of revision. Long-term follow-up of THA was historically recommended to identify aseptically failing THA, minimising the risks associated with extensive changes, but follow-up services are now in decline. A systematic review was conducted to search for evidence of the clinical or cost-effectiveness of hip arthroplasty surveillance.Methods: The study was registered with PROSPERO International Prospective Register of Systematic Reviews and conducted according to PRISMA guidelines; databases included MEDLINE and Embase, and all studies were quality assessed. Original studies (2005 to 2017) reporting follow-up of adults with THA in situ >5 years were included. Researchers extracted quantitative and qualitative data from each study.Results: For eligibility, 4,137 studies were screened: 114 studies were included in the final analysis, representing 22 countries worldwide. Data extracted included study endpoint, patient detail, loss to follow-up, revisions, scores and radiographic analysis. Six themes were derived from inductive content analysis of text: support for long-term follow-up, subgroups requiring follow-up, effect of materials/techniques on THA survival, effect of design, indicators for revision, review process. Main findings—follow-up was specifically recommended to monitor change (eg asymptomatic loosening), when outcomes of joint construct are unknown, and for specific patient subgroups. Outcome scores alone are not enough, and radiographic review should be included.Conclusion: There were no studies directly evaluating the clinical effectiveness of the long-term follow-up of THA but expert opinions from a range of international authors advocated its use for defined subgroups to provide patient-centred care. In the absence of higher level evidence, these opinions, in conjunction with emerging outputs from the national joint registries, should be used to inform services for long-term follow-up of THA.Keywords: hip joint, replacement, surveillance, revision, long-term, continuing
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