Grading the severity of the rotator cuff tendinosis on MRI: Assessment of inter-observer agreement and evaluation of a novel objective assessment tool.

Introduction: MRI is generally considered the modality of choice for the assessment of rotator cuff pathology including tendinosis. Assessment of severity is currently subjective primarily based on tendon morphology and signal intensity. Limited data are available evaluating the inter-observer agreement regarding the assessment of tendinosis severity.