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Archives of Orthopaedic and Trauma Surgery

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01-05-2008 | Arthroscopy and Sports Medicine

Diagnostics of degenerative meniscal tears at 3-Tesla MRI compared to arthroscopy as reference standard

Authors: L. V. von Engelhardt, A. Schmitz, P. H. Pennekamp, H. H. Schild, D. C. Wirtz, F. von Falkenhausen

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 5/2008

Abstract

Introduction

The goal of this study was to evaluate the diagnostic performance of 3-Tesla MRI for the assessment of degenerative meniscal tears in clinical practice.

Materials and methods

In patients with chronic knee pain, a negative history of acute trauma and a mean age of 52 years, 3-Tesla MRI were performed a few days prior to arthroscopy. In 86 menisci, diagnostic values of 3-Tesla MRI for the detection of degenerative tears were evaluated using arthroscopy as reference standard. The MRI classification, for meniscus diagnostics, described by Crues was used.

Results

At arthroscopy, all tears identified (19 horizontal, 7 complex, 3 radial) were degenerative as confirmed by histological examination. MRI grade II lesions had a prevalence of 24% and a rate of 24% of missed tears, whereas grade I lesions were not associated with a torn meniscus at arthroscopy. For meniscal tears, (grade III) sensitivity and specificity of 3-Telsa MRI was 79 and 95% for both menisci, 86 and 100% for the medial meniscus, and 57 and 92% for the lateral meniscus. The best diagnostic performance was found for complex tears, horizontal tears showed relatively good results, poor results were documented for radial tears.

Conclusion

For the medial meniscus, where horizontal and complex tears were more prevalent, 3-Tesla MRI shows a higher accuracy than for the lateral meniscus. Particularly with regard to the medial meniscus, 3-Tesla MRI could be effectively used when a degenerative tear is suspected. Nevertheless, in regard to a remarkable number of false positive and false negative findings the diagnostic value of a 3-Tesla MRI investigation should not be overestimated.

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Title: Diagnostics of degenerative meniscal tears at 3-Tesla MRI compared to arthroscopy as reference standard
Authors: L. V. von Engelhardt
A. Schmitz
P. H. Pennekamp
H. H. Schild
D. C. Wirtz
F. von Falkenhausen
Publication date: 01-05-2008
Publisher: Springer-Verlag
Published in: Archives of Orthopaedic and Trauma Surgery / Issue 5/2008
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI: https://doi.org/10.1007/s00402-007-0485-6

At a glance: The STEP trials

Springer Medicine

Diagnostics of degenerative meniscal tears at 3-Tesla MRI compared to arthroscopy as reference standard

Abstract

Introduction

Materials and methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Introduction

Materials and methods

Results

Conclusion

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