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Related Experiment Videos

Patellar button wear patterns in well-functioning total knee arthroplasty retrievals.

Jason A Lindsey1, Devin Conner, Peter Godleski

  • 1University of Tennessee Health Science Center, Campbell Clinic Orthopaedics, Memphis, TN 38017, USA.

Journal of Long-Term Effects of Medical Implants
|February 3, 2011
PubMed
Summary

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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This study analyzed wear patterns on patellar buttons from well-functioning total knee arthroplasty (TKA) to understand the patellofemoral mechanism. Findings may help predict successful TKA outcomes and reduce revision surgeries.

Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science
  • Biomechanical Engineering

Background:

  • Patellar issues like maltracking, loosening, and pain are common causes of poor outcomes and early revision in total knee arthroplasty (TKA).
  • In vivo analysis of patellofemoral mechanism function and wear in TKAs has been underrepresented in retrieval studies.

Purpose of the Study:

  • To describe observed wear patterns on patellar buttons from well-functioning TKA specimens.
  • To identify commonalities in wear patterns that may predict a well-functioning patellofemoral mechanism post-TKA.

Main Methods:

  • Examination of patellar buttons harvested from a donor program of well-functioning total knee arthroplasty (TKA) cases.
  • Detailed analysis and description of observed wear patterns on the retrieved patellar components.

Related Experiment Videos

Main Results:

  • Characterization of specific wear patterns on patellar buttons from successful TKA procedures.
  • Identification of variations and potential commonalities in these wear patterns.

Conclusions:

  • Understanding in vivo patellar wear patterns is crucial for improving TKA design and surgical techniques.
  • The findings provide insights into factors contributing to a well-functioning patellofemoral mechanism after TKA, potentially guiding future implant development and patient selection.