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Sonographic evaluation of the rotator cuff: correlation with arthroscopy
1Southern California Orthopedic and Sports Medical Group, Van Nuys.
Summary
High-resolution ultrasound is a good initial screening tool for rotator cuff tears, offering a non-invasive and cost-effective evaluation. While accuracy is promising, radiologist experience and technology advancements are key to improving diagnostic capabilities for rotator cuff integrity.
Area of Science:
- Orthopedics
- Radiology
- Musculoskeletal Imaging
Background:
- Rotator cuff tears are a common cause of shoulder pain.
- High-resolution real-time sonography is a non-invasive imaging modality.
- Arthroscopy remains the gold standard for rotator cuff evaluation.
Purpose of the Study:
- To evaluate the diagnostic accuracy of sonography for rotator cuff tears.
- To compare sonographic findings with arthroscopic results.
- To assess sonography as an initial screening tool for rotator cuff integrity.
Main Methods:
- Fifty-two patients with shoulder pain underwent both sonography and arthroscopy.
- Data collected included patient demographics, pain duration, and diagnostic findings.
- Sensitivity, specificity, accuracy, and predictive values were calculated for sonography.
Main Results:
- Arthroscopy identified 35 rotator cuff tears.
- Sonography detected 27 tears, yielding a sensitivity of 77%.
- Sonography correctly identified 11 of 17 intact rotator cuffs (specificity 65%), with overall accuracy at 73%.
Conclusions:
- Sonography is a valuable, non-invasive, and inexpensive initial screening examination for rotator cuff integrity.
- Accuracy is influenced by technical factors and radiologist expertise.
- Continued improvements in technology and experience are expected to enhance diagnostic accuracy.