The study investigated the existing guidelines on the quality and frequency of the follow-up visits after total hip replacement surgery and assessed the level of evidence of these recommendations. The review process was carried out according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Additional works were retrieved by direct investigation of the available guidelines of the most important orthopedic societies and regulatory agencies. The current systematic review of the literature resulted in zero original papers, four guidelines for routine follow-up and three guidelines for special cases. Concerning the quality of evidence behind them, these guidelines were not evidence based but drafted from expert consensus. The most important finding of this review is the large variation of recommendations in the follow-up schedule after total hip arthroplasty and the lack of evidence-based indications. Indeed, all the above-reported guidelines are the result of a consensus among experts in the field (level of recommendation class D 'very low') and not based on clinical studies.

中文翻译：

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髋关节置换术后随访时间的巨大差异：文献综述。

该研究调查了关于全髋关节置换术后随访质量和频率的现有指南，并评估了这些建议的证据水平。审查过程是根据系统审查和元分析指南的首选报告项目进行的。通过直接调查最重要的骨科学会和监管机构的可用指南，检索了其他作品。目前对文献的系统评价导致零原始论文、四项常规随访指南和三项特殊病例指南。关于它们背后的证据质量，这些指南不是基于证据的，而是根据专家共识起草的。本综述最重要的发现是全髋关节置换术后随访计划中的建议差异很大，并且缺乏循证适应症。事实上，以上报告的所有指南都是该领域专家共识的结果（推荐等级 D '非常低'），而不是基于临床研究。