Sustained function and quality of life 20 years after LCS mobile-bearing total knee arthroplasty: a retrospective cohort study.

IF 2.1 3区医学 Q2 ORTHOPEDICS

Archives of Orthopaedic and Trauma Surgery Pub Date : 2025-07-09 DOI:10.1007/s00402-025-05983-w

Amir Koutp, Sophie Plakolb, Lukas Leitner, Rene Schroedter, Andreas Leithner, Patrick Sadoghi

{"title":"Sustained function and quality of life 20 years after LCS mobile-bearing total knee arthroplasty: a retrospective cohort study.","authors":"Amir Koutp, Sophie Plakolb, Lukas Leitner, Rene Schroedter, Andreas Leithner, Patrick Sadoghi","doi":"10.1007/s00402-025-05983-w","DOIUrl":null,"url":null,"abstract":"Purpose: The aim of this study was to assess the long-term clinical outcome, quality of life (QoL), and complications associated with low-contact-stress (LCS) mobile-bearing total knee arthroplasty (TKA) with a minimum follow-up of 20 years.Methods: This is a retrospective cohort study based on a previous report that initially included 108 patients with 138 prostheses. For a minimum follow-up of 20 years, reevaluation was conducted on the remaining cohort of 15 patients, as 80 had deceased, 11 were lost to follow-up and 2 were excluded due to revision surgery. Patients were assessed for quality of life (QoL), clinical outcomes, and complications. Patient reported outcome measures were obtained via questionnaires, and range of motion (ROM) was clinically evaluated. Descriptive and explorative data analysis was performed.Results: During the follow-up period, there were fifteen revision surgeries, however the prostheses had an overall survival of 22 years. Twenty years postoperatively, active range of motion (ROM) remained comparable to 10 years, with no significant differences between females (98.46° ± 27.72° vs. 96° ± 16.7°; p = 0.105) or males (90° ± 14.14° vs. 95° ± 17.3°). WOMAC scores at 20 years (83.77 ± 11.01) were comparable to 10 years (81.46 ± 17.88). Knee Society Score (KSS) pain scores showed no significant changes either (females: 69 ± 20.9, males: 76 ± 24.4) and 20 years (73.81 ± 25.86; p = 0.398). Function scores declined significantly over time, from 80.38 ± 19.20 to 51.54 ± 31.65 in females and from 79 ± 24 to 37.5 ± 53.03 in males (p < 0.05), which is in line with the patients age and natural decline.Conclusion: The findings of this 20-year follow-up suggest that the LCS TKA can provide durable outcomes and sustained quality of life benefits in surviving patients. The observed decline in function may reflect age-related changes rather than implant performance.","PeriodicalId":8326,"journal":{"name":"Archives of Orthopaedic and Trauma Surgery","volume":"145 1","pages":"366"},"PeriodicalIF":2.1000,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12241177/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Archives of Orthopaedic and Trauma Surgery","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s00402-025-05983-w","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ORTHOPEDICS","Score":null,"Total":0}

引用次数: 0

Abstract

Purpose: The aim of this study was to assess the long-term clinical outcome, quality of life (QoL), and complications associated with low-contact-stress (LCS) mobile-bearing total knee arthroplasty (TKA) with a minimum follow-up of 20 years.

Methods: This is a retrospective cohort study based on a previous report that initially included 108 patients with 138 prostheses. For a minimum follow-up of 20 years, reevaluation was conducted on the remaining cohort of 15 patients, as 80 had deceased, 11 were lost to follow-up and 2 were excluded due to revision surgery. Patients were assessed for quality of life (QoL), clinical outcomes, and complications. Patient reported outcome measures were obtained via questionnaires, and range of motion (ROM) was clinically evaluated. Descriptive and explorative data analysis was performed.

Results: During the follow-up period, there were fifteen revision surgeries, however the prostheses had an overall survival of 22 years. Twenty years postoperatively, active range of motion (ROM) remained comparable to 10 years, with no significant differences between females (98.46° ± 27.72° vs. 96° ± 16.7°; p = 0.105) or males (90° ± 14.14° vs. 95° ± 17.3°). WOMAC scores at 20 years (83.77 ± 11.01) were comparable to 10 years (81.46 ± 17.88). Knee Society Score (KSS) pain scores showed no significant changes either (females: 69 ± 20.9, males: 76 ± 24.4) and 20 years (73.81 ± 25.86; p = 0.398). Function scores declined significantly over time, from 80.38 ± 19.20 to 51.54 ± 31.65 in females and from 79 ± 24 to 37.5 ± 53.03 in males (p < 0.05), which is in line with the patients age and natural decline.

Conclusion: The findings of this 20-year follow-up suggest that the LCS TKA can provide durable outcomes and sustained quality of life benefits in surviving patients. The observed decline in function may reflect age-related changes rather than implant performance.

Abstract Image

查看原文本刊更多论文

LCS可移动全膝关节置换术后20年的持续功能和生活质量：一项回顾性队列研究

目的：本研究的目的是评估低接触压力（LCS）移动全膝关节置换术（TKA）的长期临床结果、生活质量（QoL）和并发症，随访时间至少为20年。方法：这是一项基于先前报告的回顾性队列研究，最初包括108例患者138个假体。在至少20年的随访中，对其余15例患者进行了重新评估，其中80例患者死亡，11例患者失去随访，2例患者因翻修手术而被排除在外。评估患者的生活质量（QoL）、临床结果和并发症。通过问卷调查获得患者报告的结果测量，并对其活动范围（ROM）进行临床评估。进行描述性和探索性数据分析。结果：在随访期间，共进行了15次修复手术，假体的总生存期为22年。术后20年，活动活动度（ROM）保持与10年相当，女性无显著差异(98.46°±27.72°vs 96°±16.7°；p = 0.105)或雄(90°±95°和14.14°±17.3°)。20年WOMAC评分（83.77±11.01）与10年评分（81.46±17.88）相当。膝关节社会评分（KSS）疼痛评分也无显著变化（女性：69±20.9，男性：76±24.4），20岁(73.81±25.86；p = 0.398)。随着时间的推移，功能评分显著下降，女性从80.38±19.20降至51.54±31.65，男性从79±24降至37.5±53.03 (p)结论：20年的随访结果表明，LCS TKA可以为存活患者提供持久的结果和持续的生活质量益处。观察到的功能下降可能反映了与年龄相关的变化，而不是植入物的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Archives of Orthopaedic and Trauma Surgery 医学-外科

CiteScore

4.30

自引率

13.00%

发文量

424

审稿时长

2 months

期刊介绍： "Archives of Orthopaedic and Trauma Surgery" is a rich source of instruction and information for physicians in clinical practice and research in the extensive field of orthopaedics and traumatology. The journal publishes papers that deal with diseases and injuries of the musculoskeletal system from all fields and aspects of medicine. The journal is particularly interested in papers that satisfy the information needs of orthopaedic clinicians and practitioners. The journal places special emphasis on clinical relevance. "Archives of Orthopaedic and Trauma Surgery" is the official journal of the German Speaking Arthroscopy Association (AGA).