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Related Experiment Videos

Patellar tracking in primary total knee arthroplasty.

Edward J McPherson1

  • 1LA Orthopaedic Institute, Los Angeles, California, USA.

Instructional Course Lectures
|September 9, 2006
PubMed
Summary

Proper patellofemoral tracking is crucial for total knee arthroplasty success. Addressing factors like Q angle and component alignment can significantly improve patient outcomes and satisfaction.

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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...
Bones of the Lower Limb: Femur and Patella01:16

Bones of the Lower Limb: Femur and Patella

The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the neck...

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Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering

Background:

  • The patellofemoral articulation's role in total knee arthroplasty (TKA) success is often underestimated.
  • Failure to adequately address patellofemoral mechanics can result in abnormal patellofemoral tracking.

Purpose of the Study:

  • To highlight the significance of the patellofemoral articulation in primary TKA.
  • To identify key factors influencing patellofemoral tracking and function.

Main Methods:

  • Review of anatomical and biomechanical principles related to patellofemoral joint function.
  • Analysis of surgical technique parameters impacting patellofemoral tracking.

Main Results:

  • Abnormal patellofemoral tracking is a common complication of TKA when the articulation is neglected.
  • Factors such as Q angle, component alignment (femoral, tibial, patellar), patellar height, and resurfacing technique critically influence tracking.

Conclusions:

  • Meticulous attention to the patellofemoral articulation during TKA is essential for optimal outcomes.
  • Understanding and managing factors affecting patellofemoral tracking can lead to improved pain relief and patient satisfaction.

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