Magnetic resonance findings of osteitis pubis.

Abstract

PURPOSE To determine the correlation of MR findings with clinical features of osteitis pubis and to look for associating injuries complicating chronic cases. MATERIALS AND METHODS Pelvic MR images of the 22 elite athletes with groin pain were taken. Correlation analysis between the MR findings and clinical properties was carried out. RESULTS Six of the MR findings had strong correlation with duration of symptoms. Subchondral bone marrow edema, fluid in symphysis pubis joint, and periarticular edema had significant correlation with acuity of the case. On the contrary, subchondral sclerosis, subchondral resorption and bony margin irregularities, and osteophytes correlated with the chronicity of the case. Associated tendon injuries correlated with the duration of symptoms; i.e., all tendon injuries were in chronic cases. CONCLUSION Subchondral bone marrow edema, fluid in symphysis pubis joint, and periarticular edema are the most reliable MRI findings of osteitis pubis that has a history of less than six months. Subchondral sclerosis, subchondral resorption and bony margin irregularities, and osteophytes (or pubic beaking) are the most reliable MRI findings of the chronic disease that has been present for more than six months. Associated pathologies, especially adductor or other tendon injuries, underlie more than half of the chronic cases of osteitis pubis.

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