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<p>This study aimed to investigate the impact of implant type, cruciate-retaining (CR) vs. posterior-stabilized (PS), on the clinical results of robotic-assisted total knee arthroplasty (RA-TKA) performed with a functional alignment (FA) strategy in varus knee osteoarthritis (KOA). We retrospectively analyzed 221 RA-TKA procedures performed using an FA strategy, including 109 CR and 112 PS implants, with a minimum follow-up period of 18 months (mean: 23.3 months; range: 18–28 months). Patient-reported outcome measures (PROMs) were captured using KOOS-JR, FJS, WOMAC, KSS function, and a 5-point Likert scale. Performance-based outcomes were assessed through the 2-minute walk test (2MWT) and the Timed Up-and-Go test (TUG). Additionally, range of motion (ROM), complications, manipulation under anesthesia (MUA), reoperations, and revisions were evaluated. Functional scores, patient satisfaction with daily or recreational activities, performance-based outcomes, and ROM, showed no significant differences between the CR and PS groups. No complications occurred, and no patients required MUA, reoperations, or revisions in either group. CR and PS implant designs provided comparable functional scores, patient satisfaction, performance-based outcomes, and ROM following functionally aligned RA-TKA for varus KOA. No complications occurred, and no patients required MUA, reoperations, or revisions in either group.</p>

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Comparable outcomes between cruciate-retaining and posterior-stabilized implants following functionally aligned robotic-assisted total knee arthroplasty for varus knee osteoarthritis

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Zhenchao Huang,
  • Fan Chen,
  • Wenzhe Wang,
  • Feiyu Mu,
  • Haining Zhang,
  • Zian Zhang

摘要

This study aimed to investigate the impact of implant type, cruciate-retaining (CR) vs. posterior-stabilized (PS), on the clinical results of robotic-assisted total knee arthroplasty (RA-TKA) performed with a functional alignment (FA) strategy in varus knee osteoarthritis (KOA). We retrospectively analyzed 221 RA-TKA procedures performed using an FA strategy, including 109 CR and 112 PS implants, with a minimum follow-up period of 18 months (mean: 23.3 months; range: 18–28 months). Patient-reported outcome measures (PROMs) were captured using KOOS-JR, FJS, WOMAC, KSS function, and a 5-point Likert scale. Performance-based outcomes were assessed through the 2-minute walk test (2MWT) and the Timed Up-and-Go test (TUG). Additionally, range of motion (ROM), complications, manipulation under anesthesia (MUA), reoperations, and revisions were evaluated. Functional scores, patient satisfaction with daily or recreational activities, performance-based outcomes, and ROM, showed no significant differences between the CR and PS groups. No complications occurred, and no patients required MUA, reoperations, or revisions in either group. CR and PS implant designs provided comparable functional scores, patient satisfaction, performance-based outcomes, and ROM following functionally aligned RA-TKA for varus KOA. No complications occurred, and no patients required MUA, reoperations, or revisions in either group.