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Related Experiment Video

Updated: Jul 20, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
09:01

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Published on: January 24, 2018

Patella maltracking in posterior-stabilized total knee arthroplasty.

Paul F Lachiewicz1, Elizabeth S Soileau

  • 1Department of Orthopaedics, University of North Carolina, Chapel Hill, NC 27599-7055, USA. Paul_Lachiewicz@med.unc.edu

Clinical Orthopaedics and Related Research
|August 29, 2006
PubMed
Summary

Patella maltracking in total knee arthroplasty is often avoidable. A new posterior-stabilized knee implant and protocol resulted in a low incidence of patellofemoral complications and lateral retinacular release.

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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
  • Biomedical Engineering

Background:

  • Patella maltracking in total knee arthroplasty (TKA) can lead to significant complications, including implant failure and revision surgery.
  • Effective management of the patellofemoral joint is crucial for successful TKA outcomes.

Purpose of the Study:

  • To evaluate the incidence of lateral retinacular release and patellofemoral complications following TKA using a specific posterior-stabilized implant and protocol.
  • To determine if a standardized approach can minimize patella-related issues in TKA.

Main Methods:

  • Retrospective review of 255 primary posterior-stabilized TKAs with an anatomic femoral component and a three-peg offset-dome patella.
  • Standardized component alignment techniques were employed, including Whiteside's lines for the femoral component.

Related Experiment Videos

Last Updated: Jul 20, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
09:01

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Published on: January 24, 2018

  • Data collection focused on the need for lateral retinacular release and subsequent patellofemoral complications.

    • Main Results:

    • Lateral retinacular release was performed in 6.2% of cases, primarily in patients with significant preoperative valgus deformity.
    • No reoperations for patellofemoral joint issues were required at a mean follow-up of 3.7 years.
    • Two patients developed asymptomatic osteonecrosis of the patella, and one patella fracture occurred, managed non-operatively.

    Conclusions:

    • Patella maltracking appears to be a largely preventable complication in TKA.
    • The use of this specific posterior-stabilized implant and patellofemoral protocol is associated with a low incidence of lateral release and patella complications.
    • This approach may contribute to improved long-term outcomes in total knee replacement surgery.