Commentary: Non-contrast magnetic resonance imaging for diagnosing shoulder injuries

radiation-free and non-invasive and can almost replace radiography as the preoperative screening tool for diagnosing shoulder injuries, although its diagnostic value for various pathologies has to be appreciated separately from radiography. Nonetheless, a comprehensive clinical evaluation should always be the first step of any diagnostic workup. MRI is useful in detecting muscle and tendon injuries, soft-tissue pathologies, and major cartilage defects. Uncommon injuries can be readily diagnosed. For example, a rare case of seatbelt injury causing rupture of the deltoid muscle has been diagnosed by MRI.1 A ganglion cyst in the suprascapular fossa is uncommon and can cause a nerve palsy; noncontrast MRI helps diagnosing this pathology and planning of the surgical procedure.2 Bony pathology can be associated with other structures; MRI helps assess the anatomic association of acromioclavicular joint degeneration with supraspinatus outlet Commentary: Non-contrast magnetic resonance imaging for diagnosing shoulder injuries