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Purpose <p>The two most commonly used techniques for gap balancing in robot-assisted total knee arthroplasty (RA-TKA) are measured resection (MR) and ligament balancing (LB). There are limited studies have reported differences in intraoperative and postoperative outcomes between MR-TKA and LB-TKA in RA-TKA. This study aims to compare the intraoperative and postoperative outcomes of primary RA-TKA between LB and MR techniques.</p> Methods <p>This cohort study utilized prospectively collected data from a single center, spanning from January 2021 to December 2022. We compared the intraoperative procedures and postoperative clinical and imaging results between two groups.</p> Results <p>The LB group had a thinner distal femur cut and a lower usage of thicker polyethylene. Additionally, the LB group exhibited a higher mean femoral component external rotation and greater tibial posterior slope. The rate of soft tissue release and bone recut was lower in the LB group, as was the mean C-reactive protein level.</p> Conclusion <p>In RA-TKA, LB offers advantages in soft tissue protection and bone mass preservation. However, no differences were observed in clinical and radiographic outcomes after a 2-year follow-up.</p>

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Comparison between ligament balancing and measured resection in robot-assisted total knee arthroplasty: a 2-year follow up cohort study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月14日

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  • Muyang Yu,
  • Xingdong Yang,
  • Yiming Xu,
  • Wei Zhu,
  • Huiming Peng,
  • Jin Lin,
  • Xisheng Weng,
  • Bin Feng

摘要

Purpose

The two most commonly used techniques for gap balancing in robot-assisted total knee arthroplasty (RA-TKA) are measured resection (MR) and ligament balancing (LB). There are limited studies have reported differences in intraoperative and postoperative outcomes between MR-TKA and LB-TKA in RA-TKA. This study aims to compare the intraoperative and postoperative outcomes of primary RA-TKA between LB and MR techniques.

Methods

This cohort study utilized prospectively collected data from a single center, spanning from January 2021 to December 2022. We compared the intraoperative procedures and postoperative clinical and imaging results between two groups.

Results

The LB group had a thinner distal femur cut and a lower usage of thicker polyethylene. Additionally, the LB group exhibited a higher mean femoral component external rotation and greater tibial posterior slope. The rate of soft tissue release and bone recut was lower in the LB group, as was the mean C-reactive protein level.

Conclusion

In RA-TKA, LB offers advantages in soft tissue protection and bone mass preservation. However, no differences were observed in clinical and radiographic outcomes after a 2-year follow-up.