Incomplete closure of ischiopubic synchondrosis

Case contributed by Dr Brian Gilcrease-Garcia

Presentation

Left hip pain

Patient Data

Age: 40 years
Gender: Female

Discontinuity of the right obturator ring, with smooth corticated margins of the adjacent pubic body and inferior. No abnormal mineralization or soft tissue density to suggest soft tissue mass. Findings most consistent with non-ossification of the right ischiopubic synchondrosis as an anatomic variant.

No left hip fracture.

Case Discussion

Failure of ossification of the ischiopubic synchondrosis may be unilateral or bilateral 1.

With any lesion of the pubic ramus, one should always consider differential diagnosis of fracture or lytic bone lesion (e.g. metastasis). In this case, the entirely corticated appearance and smooth margins of the adjacent bones, particularly at the junction with the pubic body, as classic for an unfused synchondrosis.

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Case information

rID: 62473
Published: 19th Aug 2018
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included
Institution: Mallinckrodt Institute of Radiology at Washington University

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