Imaging patellar complications after knee arthroplasty

Abstract The purpose of this study is to describe complications affecting the patella in patients with total or partial knee arthroplasty. We respectively analysed plain-film radiographs, as well as ultrasound images when acquired, in a consecutive series of 1272 patients. The mean interval from kne...

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Bibliographic Details
Published in:European journal of radiology 2008-03, Vol.65 (3), p.478-482
Main Authors: Melloni, Pietro, Valls, Rafael, Veintemillas, Maite
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Arthroplasty, Replacement, Knee
Biological and medical sciences
Female
Humans
Investigative techniques, diagnostic techniques (general aspects)
Knee arthroplasty
Male
Medical sciences
Middle Aged
Patella
Patellar complications
Postoperative Complications - diagnostic imaging
Radiography
Radiology
Retrospective Studies
Ultrasonography
X-rays
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Summary:Abstract The purpose of this study is to describe complications affecting the patella in patients with total or partial knee arthroplasty. We respectively analysed plain-film radiographs, as well as ultrasound images when acquired, in a consecutive series of 1272 patients. The mean interval from knee replacement to patellar complications was 5 years and 7 months (range, 5 months to 14 years). The complications described include fracture, instability, dislocation or luxation, necrosis of the patella, infection of the patella, erosion of the patella, patellar impingement on the prosthesis and patellar or quadricipital tendon tear. We discuss the pathological imaging findings in the patella and their differential diagnosis after knee arthroplasty. Patellar complications after knee arthroplasty are uncommon but often potentially serious.
ISSN:0720-048X
1872-7727
DOI:10.1016/j.ejrad.2007.04.018