Coronal plane alignment changes do not affect outcome for total knee implant design with 3 degree varus joint line.

IF 2.8 3区医学 Q1 ORTHOPEDICS

Journal of Orthopaedic Surgery and Research Pub Date : 2025-04-04 DOI:10.1186/s13018-025-05709-z

Joshua Yeuk-Shun Tran, Esther Oi-Ching Chan, Cham-Kit Wong, Gloria Yan-Ting Lam, Tsz-Lung Choi, Rex Wang-Fung Mak, Jonathan Patrick Ng, Kevin Ki-Wai Ho, Patrick Shu-Hang Yung, Michael Tim-Yun Ong

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引用次数: 0

Abstract

Background: Total knee arthroplasty (TKA) is a widely performed surgical intervention for symptomatic knee osteoarthritis (OA). However, the influence of coronal plane alignment on clinical outcomes remains unclear. This study evaluates whether alterations in the coronal plane alignment of the knee (CPAK) classification, using the same implant system, affect postoperative outcomes in patients undergoing robotic-assisted TKA.

Methods: We conducted a retrospective review of 202 patients who underwent primary robotic-assisted TKA between 2019 and 2023 using NAVIO or CORI systems and Journey II implants. Patients were classified based on changes in CPAK classification and functional outcomes assessed using the Knee Society Score (KSS) and Knee Society Function Score (KSFS) at multiple postoperative time points. Statistical analyses compared outcomes between groups with changed and unchanged CPAK.

Results: A total of 202 patients were included. Preoperative demographic characteristics were comparable between groups. Functional outcome scores at 6 weeks, 3 months, 6 months, and 12 months postoperatively showed no significant differences between the changed CPAK group and the unchanged CPAK group (p > 0.05 for all comparisons). Subgroup analyses further revealed no statistically significant disparities in functional outcomes based on the type or degree of CPAK changes.

Conclusion: Our findings suggest that changes in coronal plane alignment do not adversely affect functional outcomes following robotic-assisted TKA. This implies that alignment strategy may be less critical to patient satisfaction and functional recovery than previously assumed. Implant-induced alignment changes may contribute to comparable clinical outcomes and could be a key factor in patient recovery. Understanding the relationship between CPAK changes and clinical outcomes can inform best practices in knee arthroplasty, ultimately enhancing patient satisfaction and quality of life post-surgery.

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冠状面对齐方式的改变不会影响关节线外翻 3 度的全膝关节假体设计的结果。

背景：全膝关节置换术（TKA）是一种广泛应用于症状性膝骨关节炎（OA）的手术干预。然而，冠状面对齐对临床结果的影响尚不清楚。本研究评估在使用相同的植入系统时，膝关节冠状面排列（CPAK）分类的改变是否会影响机器人辅助TKA患者的术后结果。方法：我们对2019年至2023年期间使用NAVIO或CORI系统和Journey II植入物进行初级机器人辅助TKA的202例患者进行了回顾性分析。根据CPAK分级的变化和术后多个时间点膝关节社会评分（KSS）和膝关节社会功能评分（KSFS）评估的功能结局对患者进行分类。统计学分析比较了CPAK改变组和未改变组的结果。结果：共纳入202例患者。术前人口学特征组间具有可比性。术后6周、3个月、6个月和12个月的功能结局评分显示，CPAK改变组与CPAK不变组之间无显著差异（p < 0.05）。亚组分析进一步显示，基于CPAK改变的类型或程度，功能结果没有统计学上的显著差异。结论：我们的研究结果表明，冠状面排列的改变不会对机器人辅助TKA后的功能结果产生不利影响。这意味着对齐策略对患者满意度和功能恢复的影响可能不如以前假设的那么重要。种植体诱导的排列改变可能有助于比较临床结果，并可能是患者康复的关键因素。了解CPAK变化与临床结果之间的关系可以为膝关节置换术的最佳实践提供信息，最终提高患者满意度和术后生活质量。

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

Journal of Orthopaedic Surgery and Research ORTHOPEDICS-

CiteScore

4.10

自引率

7.70%

发文量

494

审稿时长

>12 weeks

期刊介绍： Journal of Orthopaedic Surgery and Research is an open access journal that encompasses all aspects of clinical and basic research studies related to musculoskeletal issues. Orthopaedic research is conducted at clinical and basic science levels. With the advancement of new technologies and the increasing expectation and demand from doctors and patients, we are witnessing an enormous growth in clinical orthopaedic research, particularly in the fields of traumatology, spinal surgery, joint replacement, sports medicine, musculoskeletal tumour management, hand microsurgery, foot and ankle surgery, paediatric orthopaedic, and orthopaedic rehabilitation. The involvement of basic science ranges from molecular, cellular, structural and functional perspectives to tissue engineering, gait analysis, automation and robotic surgery. Implant and biomaterial designs are new disciplines that complement clinical applications. JOSR encourages the publication of multidisciplinary research with collaboration amongst clinicians and scientists from different disciplines, which will be the trend in the coming decades.