radial mr-arthrography vs. hip arthroscopy in diagnosis of ... · blankenbaker et al....
TRANSCRIPT
![Page 1: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/1.jpg)
![Page 2: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/2.jpg)
Disclosure
The authors have no financial relationships to disclose.
![Page 3: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/3.jpg)
Introduction
MRArthrography vs. MRI
Labral tears MRA 91% accuracy vs MR 36%.
Czerny et Al, 1996
Moderate sensitivity in cartilage lesions
Schmid et al 2003
![Page 4: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/4.jpg)
Radial MRA Displays the labrum
in cross section circumferentially in 360 degrees around entire acetabulum .
Higher accuracy for the labrum 85% vs parallel cuts 70%.
G. M. J. Plötz et al 2001
3
12
6
9
![Page 5: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/5.jpg)
Cam lesions and alpha angles can be measured all round the femoral head & neck.
![Page 6: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/6.jpg)
Aim
Detection sensitivity & accuracy of Radial MRA in detection of labral tears and cartilage lesions.
Results correlated with arthroscopic findings.
![Page 7: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/7.jpg)
LB
Radial MRA: showing labral tear at 2 clock and arthroscopic finding.
![Page 8: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/8.jpg)
Cartilage Delamination
MRA: Dye seen behind the labrum & cartilage, delamination confirmed on arthroscopy
![Page 9: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/9.jpg)
rMRA vs Arth in Labral Tears
Arthroscopy negative Arthroscopy positive (FP) 2 (TP ) 16 MRA positive 18 (TN) 3 (FN) 0 MRA negative 3
Arthroscopy negative Arthroscopy positive (FP) 2 (TP ) 13 MRA positive 15 (TN) 6 (FN) 0 MRA negative 0
rMRA vs Arth in Cartilage lesions Sensitivity=100% & accuracy 90%
Sensitivity=100% & accuracy 90.5%
![Page 10: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/10.jpg)
Conclusion
Radial MRA has shown a 100% sensitivity and 90% accuracy in detection of labral tears and cartilage lesions.
In addition to identifying the pathology, it aids in exact localization during hip arthroscopy.
![Page 11: Radial MR-Arthrography Vs. Hip Arthroscopy In Diagnosis Of ... · Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol . 2007 Chan YS et al, Evaluating](https://reader030.vdocuments.net/reader030/viewer/2022013015/5b3bfc537f8b9ace408d2a90/html5/thumbnails/11.jpg)
Ref.
Blankenbaker et al. Classification and localization of labral tears. Skeletal Radiol 2007
Chan YS et al, Evaluating Hip labral tears using MRA: Prospective study comparing Hip Arthroscopy and MRA diagnosis. Arthroscopy 2005
Czerny C, H. S. Lesions of the acetabular labrum: accuracy of MR imaging and MR arthrography in detection and staging. Radiology . 1996
Leunig M, et al. Evaluation of the acetabular labrum by MRA. JBJS Br, 1996
Plötz GM,. MRA of the acetabular labrum: value of radial reconstructions. Arch Orthop Trauma Surg 2001