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Related Concept Videos

Knee Joint01:23

Knee Joint

The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...

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Related Experiment Video

Updated: Jul 7, 2026

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
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Learning curve in navigated total knee replacement. A multi-centre study comparing experienced and beginner centres.

Jean-Yves Jenny1, Rolf K Miehlke, Alexander Giurea

  • 1Centre de Chirurgie Orthopédique et de la Main, Hôpitaux Universitaires de Strasbourg, 10 avenue Baumann, F-67400 Illkirch-Graffenstaden, France. jean-yves.jenny@chru-strasbourg.fr

The Knee
|February 12, 2008
PubMed
Summary

The OrthoPilot navigation system demonstrates a low learning curve for total knee replacements (TKR). Operating time increases initially in beginner centers but normalizes after approximately 30 cases, with no impact on accuracy or outcomes.

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Area of Science:

  • Orthopedic Surgery
  • Medical Device Technology
  • Surgical Navigation Systems

Background:

  • The OrthoPilot navigation system is utilized in orthopedic surgery.
  • Assessing the learning curve of new surgical technologies is crucial for adoption.
  • Understanding the learning curve impacts training and implementation strategies.

Purpose of the Study:

  • To analyze the learning curve of the OrthoPilot navigation system in orthopedic centers.
  • To compare the performance of beginner centers versus experienced centers using the system.
  • To evaluate key surgical parameters during the learning phase.

Main Methods:

  • Prospective, controlled, multi-center study involving 13 European orthopedic centers.
  • Inclusion of 368 total knee replacements (TKR), with 150 in experienced centers and 218 in beginner centers.
  • Assessment of implantation accuracy, clinical outcome, operation time, and complications.

Main Results:

  • No significant differences were observed in implantation accuracy, clinical outcome, or complications between beginner and experienced centers.
  • Operating time was significantly longer in beginner centers initially.
  • The increased operating time in beginner centers diminished after approximately 30 TKR implantations.

Conclusions:

  • The learning curve for the OrthoPilot navigation system appears to level off after around 30 cases.
  • The system offers high implantation accuracy, suggesting a low and acceptable learning curve.
  • The findings support the efficient integration of the OrthoPilot system into orthopedic practices.