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Related Concept Videos

Knee Joint01:23

Knee Joint

3.8K
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...
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Bones of the Lower Limb: Femur and Patella01:16

Bones of the Lower Limb: Femur and Patella

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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...
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Related Experiment Video

Updated: Apr 21, 2026

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
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Avoiding patellar complications in total knee replacement.

R D Russell1, M H Huo1, R E Jones1

  • 1UT Southwestern Medical Center, Department of Orthopaedic Surgery, 1801 Inwood Rd, Dallas, Texas, 75390, USA.

The Bone & Joint Journal
|November 9, 2014
PubMed
Summary
This summary is machine-generated.

Patellofemoral complications after total knee replacement (TKR) are decreasing but still occur. Understanding patellofemoral maltracking is key to preventing and managing these issues.

Keywords:
InstabilityPatellaResurfacingTotal knee arthroplastyTotal knee replacement

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Area of Science:

  • Orthopedic surgery
  • Biomedical engineering
  • Knee biomechanics

Background:

  • Patellofemoral complications are frequent after total knee replacement (TKR).
  • Leaving the patella unsurfaced can cause anterior knee pain and necessitate re-operation.
  • Complications of patellar resurfacing include fracture, loosening, instability, wear, clunk, and osteonecrosis.

Purpose of the Study:

  • To review the common patellofemoral complications following total knee replacement.
  • To highlight the importance of understanding patellofemoral tracking for complication prevention and management.

Main Methods:

  • Literature review of patellofemoral complications in total knee replacement.
  • Analysis of historical and contemporary implant design impacts on complication rates.
  • Focus on patellofemoral tracking as a primary cause of failure.

Main Results:

  • While overall complication rates have decreased with modern implants, patellofemoral issues persist.
  • Patellofemoral maltracking remains a significant cause of TKR failure.
  • Historical data shows patellar complications were a major reason for TKR failure.

Conclusions:

  • Contemporary total knee replacement designs have reduced patellofemoral complication rates.
  • Preventing and managing patellofemoral maltracking is crucial for successful TKR outcomes.
  • Further understanding of maltracking causes is essential for improving TKR.