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Is MRI helpful in evaluating suspected ischiopubic synchondrosis?
Often not. Typical findings include focal marrow edema, T1 hypointense fibrous "bridging" around the lesion, and edema of the adjacent soft tissues. This is rather non-specific, especially considering the leading alternative diagnosis of stress fracture or osteomyelitis may appear similar. MRI may still be indicated to exclude other soft tissue lesions (see reference #2 for more).
Lucent and expansile right ischiopubic synchondrosis (blue line), as compared to normal left synchondrosis (yellow).