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Related Experiment Video

Updated: Jul 5, 2026

A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique
05:57

A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique

Published on: January 6, 2023

Cutting errors in total knee replacement: assessment by computer assisted surgery.

W P Yau1, K Y Chiu

  • 1Department of Orthopaedics and Traumatology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Room 216, New Clinical Building, No. 102, Pokfulam Road, Hong Kong, Hong Kong. peterwpy@hkucc.hku.hk

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
|May 15, 2008
PubMed
Summary
This summary is machine-generated.

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This study measured bone cutting errors in total knee replacements, finding average errors of 1mm and 1.4mm in coronal and sagittal planes, respectively. Open cutting techniques showed fewer sagittal plane errors compared to slotted cutting.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Accurate bone cuts are crucial for successful total knee replacement (TKR) outcomes.
  • Existing literature offers limited data on the precision of bone cuts during TKR procedures.

Purpose of the Study:

  • To quantify bone cutting errors in total knee replacement surgery.
  • To compare the accuracy of "slotted cutting" versus "open cutting" techniques for bone preparation.

Main Methods:

  • A computer navigation system was employed to measure cutting errors in 40 consecutive TKR surgeries performed by a single surgeon.
  • Bone cuts were analyzed in both coronal and sagittal planes for each technique.

Main Results:

  • The average absolute cutting error was 1mm in the coronal plane and 1.4mm in the sagittal plane.

Related Experiment Videos

Last Updated: Jul 5, 2026

A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique
05:57

A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique

Published on: January 6, 2023

  • A significantly higher number of outliers (errors > 3mm) were observed in the sagittal plane (P=0.014).
  • Open cutting demonstrated significantly less error in the sagittal plane of the tibial cut compared to slotted cutting (P=0.031).

    • Conclusions:

    • Bone cutting errors in TKR are measurable and can vary between techniques.
    • Open cutting may offer improved accuracy in the sagittal plane for tibial cuts, potentially due to the use of stiffer, thicker saw blades.