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High-resolution MRI (3T-MRI) in diagnosis of wrist pain: is diagnostic arthroscopy still necessary?
Sabine Ochman1,2, B Wieskötter3, M Langer3
1Department of Trauma-, Hand- and Reconstructive Surgery, University Hospital, Münster, Germany. ochman@uni-muenster.de.
Introduction:
3T MRI has become increasingly available for better imaging of interosseous ligaments, TFCC, and avascular necrosis compared with 1.5T MRI. This study assesses the sensitivity and specificity of 3T MRI compared with arthroscopy as the gold standard.
Patients And Methods:
Eighteen patients were examined with 3T MRI using coronal T1-TSE; PD-FS; and coronal, sagittal, and axial contrast-enhanced T1-FFE-FS sequences. Two musculoskeletal radiologists evaluated the images independently. Patients underwent diagnostic arthroscopy.
Results:
The classifications of the cartilage lesions showed good correlations with the arthroscopy findings (κ = 0.8-0.9). In contrast to the arthroscopy, cartilage of the distal carpal row was very good and could be evaluated in all patients on MRI. The sensitivity for the TFCC lesion was 83%, and the specificity was 42% (radiologist 1) and 63% (radiologist 2). For the ligament lesions, the sensitivity and specificity were 75 and 100%, respectively, with a high interobserver agreement (κ = 0.8-0.9).
Discussion:
3T MRI proved to be of good value in diagnosing cartilage lesions, especially in the distal carpal row, whereas wrist arthroscopy provided therapeutic options. When evaluating the surgical therapeutical options, 3T MRI is a good diagnostic tool for pre-operatively evaluating the cartilage of the distal carpal row.
Insights
3T MRI effectively diagnoses cartilage lesions, particularly in the distal carpal row, offering a valuable pre-operative tool. Wrist arthroscopy remains essential for therapeutic interventions.
Area of Science:
- Orthopedic Imaging
- Musculoskeletal Radiology
Background:
- 3T MRI offers superior visualization of wrist structures like interosseous ligaments, triangular fibrocartilage complex (TFCC), and avascular necrosis compared to 1.5T MRI.
- This study evaluates the diagnostic performance of 3T MRI against arthroscopy, the established gold standard.
Purpose of the Study:
- To assess the sensitivity and specificity of 3T MRI in diagnosing wrist pathologies.
- To compare 3T MRI findings with arthroscopic results for cartilage lesions, TFCC tears, and ligament injuries.
Main Methods:
- Eighteen patients underwent 3T MRI with specific sequences (coronal T1-TSE, PD-FS, contrast-enhanced T1-FFE-FS).
- Two musculoskeletal radiologists independently interpreted MRI images.
- All patients subsequently underwent diagnostic wrist arthroscopy.
Main Results:
- 3T MRI demonstrated good correlation (κ=0.8-0.9) with arthroscopy for cartilage lesion classification.
- Excellent visualization of distal carpal row cartilage was achieved with 3T MRI in all patients.
- Sensitivity/specificity for TFCC lesions were 83%/42-63%; for ligament lesions, 75%/100% with high interobserver agreement (κ=0.8-0.9).
Conclusions:
- 3T MRI is valuable for diagnosing cartilage lesions, especially in the distal carpal row, aiding pre-operative assessment.
- While 3T MRI excels in diagnosis, wrist arthroscopy remains crucial for therapeutic interventions.
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