Abstract
Both MRI and ultrasound (US) demonstrate equivalent accuracy in the evaluation of
the rotator cuff. Both modalities have their advantages, disadvantages, and pitfalls.
Radiography is an important complementary modality in that it can demonstrate occult
sources of shoulder pain. MRI is recommended for the evaluation of shoulder pain in
patients < 40 years of age because labral pathology is frequently identified. However,
in patients > 40 years, US should be the first-line modality because the incidence
of rotator cuff pathology increases with age. US is useful to guide procedures such
as subacromial injection and calcific tendinosis lavage. Radiologists should be knowledgeable
of both MRI and US of the shoulder to tailor these examinations to the specific needs
of their patients.
Keywords
ultrasound of rotator cuff tears - MRI of rotator cuff tears - subacromial pathology
- calcific tendinosis
