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Related Experiment Video

Updated: Jun 22, 2026

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
09:31

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty

Published on: February 27, 2018

Computer-assisted hip resurfacing using individualized drill templates.

Manuela Kunz1, John F Rudan, George L Xenoyannis

  • 1Department of Surgery, Queen's University, Kingston, ON, Canada.

The Journal of Arthroplasty
|May 26, 2009
PubMed
Summary
This summary is machine-generated.

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Individualized templates offer an accurate and reliable method for femoral component placement in hip resurfacing surgery. This patient-specific approach matches conventional computer-assisted techniques for precise stem alignment.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Medical Device Technology

Background:

  • Accurate femoral component placement is crucial for successful hip resurfacing.
  • Conventional computer-assisted surgery (CAS) systems have limitations.
  • Patient-specific instrumentation may offer an alternative for improved accuracy.

Purpose of the Study:

  • To evaluate the accuracy and reliability of individualized templates for femoral component placement in hip resurfacing.
  • To compare the precision of patient-specific drill guides with traditional CAS methods.

Main Methods:

  • A 3D computer model of the femur was used to plan the drill trajectory for the central pin.
  • Patient-specific, surface-matched plastic drilling templates were created using rapid prototyping.

Related Experiment Videos

Last Updated: Jun 22, 2026

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
09:31

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty

Published on: February 27, 2018

  • Intraoperative positioning of the template and drilling of the central pin were performed.
  • Accuracy was measured by comparing actual central pin alignment to the planned trajectory.

    • Main Results:

    • The mean deviation between planned and actual central pin alignment was 1.14 degrees in varus.
    • The mean deviation was 4.49 degrees in retroversion.
    • Individualized templates demonstrated accuracy comparable to conventional CAS.

    Conclusions:

    • Patient-specific templates provide an accurate and reliable system for femoral component placement during hip resurfacing.
    • This technique offers a viable alternative to conventional computer-assisted methods, potentially improving surgical outcomes.