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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 14, 2026

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
05:44

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach

Published on: October 20, 2023

Imaging patellar complications after knee arthroplasty.

Pietro Melloni1, Rafael Valls, Maite Veintemillas

  • 1Unitat de Imatge d'Alta Tecnologia, Centre Diagnòstic, Corporació Parc Taulí, Universitat Autònoma de Barcelona, Sabadell, Spain. pmelloni@cspt.es

European Journal of Radiology
|June 5, 2007
PubMed
Summary

Patellar complications after knee replacement are uncommon but serious. This study details various patellar issues, including fracture, instability, and tendon tears, observed in over 1200 patients undergoing knee arthroplasty.

Related Experiment Videos

Last Updated: Jul 14, 2026

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
05:44

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach

Published on: October 20, 2023

Area of Science:

  • Orthopedic surgery
  • Radiology
  • Biomedical engineering

Background:

  • Knee arthroplasty is a common procedure for debilitating knee conditions.
  • Patellar complications, though infrequent, can significantly impact patient outcomes.
  • Accurate diagnosis of patellar issues post-arthroplasty is crucial for effective management.

Purpose of the Study:

  • To comprehensively describe patellar complications following total or partial knee arthroplasty.
  • To detail the imaging findings and differential diagnoses of these complications.
  • To highlight the potential severity of patellar issues after knee replacement.

Main Methods:

  • Analysis of plain-film radiographs from 1272 patients.
  • Inclusion of ultrasound imaging where available.
  • Review of patellar complications occurring at a mean of 5 years and 7 months post-surgery.

Main Results:

  • Identified complications include fracture, instability, dislocation, necrosis, infection, erosion, impingement, and tendon tears.
  • Mean interval to complication was 5 years 7 months (range: 5 months–14 years).
  • Discussed pathological imaging findings and differential diagnoses for patellar issues.

Conclusions:

  • Patellar complications after knee arthroplasty are uncommon but can be serious.
  • Radiographic and ultrasound analysis aids in diagnosing these complications.
  • Understanding these complications is vital for improving patient care post-knee replacement.