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Background <p>This study compared imageless robotic-assisted total knee arthroplasty (RATKA) with accelerometer-based navigation (ABN) systems in terms of surgical accuracy and early clinical outcomes.</p> Methods <p>A retrospective analysis was conducted on 153 patients (178 knees) who had undergone primary TKA from 2017 to 2023. Surgical accuracy and functional outcomes were assessed up to 12&#xa0;months post-operation using the Chi-square test, Student’s <i>t</i>-test, and ANCOVA. Subgroup analyses based on patient demographics were also conducted.</p> Results <p>Among 153 patients, 101 underwent RATKA, and 52 received ABN. RATKA demonstrated superior alignment accuracy with a significantly lower deviation from the planned alignment (<i>P</i> &lt; 0.05). Additionally, RATKA led to significantly better postoperative functional scores at 6&#xa0;weeks (<i>P</i> = 0.001) and 3&#xa0;months (<i>P</i> = 0.001), even after adjusting for preoperative functional differences.</p> Conclusions <p>RATKA offers enhanced precision and improves early recovery compared to ABN, supporting its potential as a preferred technology for TKA. Its ability to optimize kinematic alignment may contribute to superior patient outcomes. Compared to ABN, RATKA provides a unique advantage by achieving greater accuracy in planned alignment, which may translate into improved functional recovery. Further research with larger cohorts is recommended to confirm these findings.</p>

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Handheld imageless robotic total knee arthroplasty improves accuracy and early clinical outcomes when compared with navigation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月4日

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

摘要

Background

This study compared imageless robotic-assisted total knee arthroplasty (RATKA) with accelerometer-based navigation (ABN) systems in terms of surgical accuracy and early clinical outcomes.

Methods

A retrospective analysis was conducted on 153 patients (178 knees) who had undergone primary TKA from 2017 to 2023. Surgical accuracy and functional outcomes were assessed up to 12 months post-operation using the Chi-square test, Student’s t-test, and ANCOVA. Subgroup analyses based on patient demographics were also conducted.

Results

Among 153 patients, 101 underwent RATKA, and 52 received ABN. RATKA demonstrated superior alignment accuracy with a significantly lower deviation from the planned alignment (P < 0.05). Additionally, RATKA led to significantly better postoperative functional scores at 6 weeks (P = 0.001) and 3 months (P = 0.001), even after adjusting for preoperative functional differences.

Conclusions

RATKA offers enhanced precision and improves early recovery compared to ABN, supporting its potential as a preferred technology for TKA. Its ability to optimize kinematic alignment may contribute to superior patient outcomes. Compared to ABN, RATKA provides a unique advantage by achieving greater accuracy in planned alignment, which may translate into improved functional recovery. Further research with larger cohorts is recommended to confirm these findings.