Document Detail


Evaluation of grades 3 and 4 chondromalacia of the knee using T2*-weighted 3D gradient-echo articular cartilage imaging.
MedLine Citation:
PMID:  11465769     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To determine the accuracy of T2*-weighted three-dimensional (3D) gradient-echo articular cartilage imaging in the identification of grades 3 and 4 chondromalacia of the knee. DESIGN AND PATIENTS: A retrospective evaluation of 80 patients who underwent both arthroscopic and MRI evaluation was performed. The 3D images were interpreted by one observer without knowledge of the surgical results. The medial and lateral femoral condyles, the medial and lateral tibial plateau, the patellar cartilage and trochlear groove were evaluated. MR cartilage images were considered positive if focal reduction of cartilage thickness was present (grade 3 chondromalacia) or if complete loss of cartilage was present (grade 4 chondromalacia). Comparison of the 3D MR results with the arthroscopic findings was performed. RESULTS: Eighty patients were included in the study group. A total of 480 articular cartilage sites were evaluated with MRI and arthroscopy. Results of MR identification of grades 3 and 4 chondromalacia, all sites combined, were: sensitivity 83%, specificity 97%, false negative rate 17%, false positive rate 3%, positive predictive value 87%, negative predictive value 95%, overall accuracy 93%. CONCLUSION: The results demonstrate that T2*-weighted 3D gradient-echo articular cartilage imaging can identify grades 3 and 4 chondromalacia of the knee.
Authors:
B J Murphy
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Skeletal radiology     Volume:  30     ISSN:  0364-2348     ISO Abbreviation:  Skeletal Radiol.     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-07-23     Completed Date:  2002-06-27     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7701953     Medline TA:  Skeletal Radiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  305-11     Citation Subset:  IM    
Affiliation:
Department of Radiology, The University of Miami School of Medicine, The Joseph Applebaum MRI Center, FL 33136, USA.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Aged, 80 and over
Cartilage Diseases / pathology*
Cartilage, Articular / pathology*
Female
Humans
Knee Joint / pathology*
Magnetic Resonance Imaging / methods*
Male
Middle Aged
Retrospective Studies
Sensitivity and Specificity

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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