Assessing the suitability of the Triathlon total knee replacement system as an alternative for former users of PFC; a single surgeon prospective cohort study.

IF 2.4 3区医学 Q2 ORTHOPEDICS

International Orthopaedics Pub Date : 2026-10-01 Epub Date: 2026-07-08 DOI:10.1007/s00264-026-06941-w

Hannah Jones, Christopher Woodward, Peter Lewis

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引用次数: 0

Abstract

Introduction: Total Knee Replacement (TKR) implant selection is of paramount importance. The PFC TKR (DePuy Synthes), was a popular TKRs in the UK. As PFC has been phased out, surgeons have had to select a new implant. The replacement Attune system had some early concerns about loosening. Triathlon (Stryker), is another popular TKR in the UK. The aim of the project is to evaluate the Triathlon Knee system's introduction to an experienced PFC utilising team and asses whether PROMs and long term survival are comparable.

Methods: We performed a prospective cohort study assessing 38 PFC and 45 Triathlon TKRs performed by a single surgical team form 2014-2015, at separate elective sites. Oxford Knee Score (OKS) at 4.5 months and one year were compared. Survival in terms of risk of revision was studied up to ten years.

Results: 83 TKRs were included; 38 PFC and 45 Triathlon. Mean age of both groups was 68, and mean ASA grade was 2.2 and 2 respectively. There was no statistical difference in group demographics. At 4 ½ months mean OKS of PFC was 31.9 compared to 28 for Triathlon. By one year this difference narrowed, with similar scores; 31.2 PFC, 31.1 Triathlon. At ten years only one (Triathlon) TKR was revised, due to infection. 11 patients underwent sequential bilateral total knee replacements with one side PFC and the other Triathlon. There was no significant difference in PROMS at 4 ½ months 17 vs 14.3 for PFC and Triathlon respectively (p value 0.49) or one year (p value 0.78), with OKS of 18.1 vs 19.6. for PFC and Triathlon.

Discussion: Overall, our study should support surgeons in deciding on implant choice post PFC withdrawal. Amongst the alternative systems available, that may well be suitable implants to use, the Triathlon is a valid choice. While NJR data already demonstrates excellent survival of Triathlon, our study demonstrates a smooth transition of the lead surgeon and wider team, to using Triathlon, having been experienced in PFC.

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评估铁人三项全膝关节置换术系统作为前PFC使用者的替代方案的适用性；一项单一外科医生前瞻性队列研究。

全膝关节置换术（TKR）的植入物选择是至关重要的。PFC TKR （DePuy Synthes）是英国流行的TKR。随着PFC的逐步淘汰，外科医生不得不选择一种新的植入物。替代的调谐系统早期有一些松动的担忧。铁人三项（Stryker），是另一个流行的TKR在英国。该项目的目的是评估Triathlon Knee系统在经验丰富的PFC使用团队中的应用，并评估PROMs和长期存活率是否具有可比性。方法：我们进行了一项前瞻性队列研究，评估了2014-2015年由单个外科团队在不同的选择性部位进行的38例PFC和45例Triathlon TKRs。比较4.5个月和1年的牛津膝关节评分（OKS）。生存率方面的修正风险研究持续了10年。结果：共纳入83例TKRs；38 PFC和45铁人三项。两组患者平均年龄68岁，ASA平均评分分别为2.2和2级。两组人口统计学差异无统计学意义。在4个半月时，PFC的平均OKS为31.9，而铁人三项的平均OKS为28。一年后，这一差距缩小了，得分相似；31.2 PFC, 31.1 Triathlon。在十年中，由于感染，只有一个（铁人三项）TKR被修改。11例患者接受了双侧全膝关节置换术，一侧为PFC，另一侧为Triathlon。PFC和Triathlon在4个半月时的PROMS分别为17和14.3 （p值0.49）或1年（p值0.78），OKS分别为18.1和19.6。参加PFC和铁人三项比赛。讨论：总的来说，我们的研究应该支持外科医生在PFC退出后决定种植体的选择。在可供选择的系统中，可能很适合植入使用，铁人三项是一个有效的选择。虽然NJR的数据已经证明了Triathlon的良好存活率，但我们的研究表明，在PFC中经验丰富的首席外科医生和更广泛的团队可以顺利过渡到使用Triathlon。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Orthopaedics 医学-整形外科

CiteScore

5.50

自引率

7.40%

发文量

360

审稿时长

1 months

期刊介绍： International Orthopaedics, the Official Journal of the Société Internationale de Chirurgie Orthopédique et de Traumatologie (SICOT) , publishes original papers from all over the world. The articles deal with clinical orthopaedic surgery or basic research directly connected with orthopaedic surgery. International Orthopaedics will also link all the members of SICOT by means of an insert that will be concerned with SICOT matters. Finally, it is expected that news and information regarding all aspects of orthopaedic surgery, including meetings, panels, instructional courses, etc. will be brought to the attention of the readers. Manuscripts submitted for publication must contain a statement to the effect that all human studies have been approved by the appropriate ethics committee and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki. It should also be stated clearly in the text that all persons gave their informed consent prior to their inclusion in the study. Details that might disclose the identity of the subjects under study should be omitted. Reports of animal experiments must state that the "Principles of laboratory animal care" (NIH publication No. 85-23, revised 1985) were followed, as well as specific national laws (e.g. the current version of the German Law on the Protection of Animals) where applicable. The editors reserve the right to reject manuscripts that do not comply with the above-mentioned requirements. The author will be held responsible for false statements or for failure to fulfil the above-mentioned requirements.