Infection of the ischiopubic synchondrosis (IPS) is a diagnostic dilemma. This article reviews four such cases. All patients complained of ipsilateral groin pain, were febrile, and had elevated erythrocyte sedimentation rates. Initial radiographs were interpreted as normal but later showed increasingly lucent zones at the IPS. Radionuclide bone scans demonstrated diffusely increased uptake in the vicinity of the IPS. This contrasts with the discrete pattern seen with a normal IPS. Blood cultures were positive. Satisfactory outcomes were obtained with conservative treatment. Clinical presentation, laboratory results, radiographs, and bone scans must be correlated to distinguish this syndrome from a “normal radiologic variant.”
Division of Orthopaedics and *Department of Radiology, Children's Hospital of Eastern Ontario, Ottawa, Ontario; and †Division of Nuclear Medicine, Foothills Hospital, University of Calgary, Calgary, Alberta, Canada
Address correspondence and reprint requests to Dr. Jarvis at Texas Scottish Rite Hospital, 2222 Welborn Street, Dallas, TX 75219, U.S.A. After July 1985 his address is Division of Orthopaedics, Children's Hospital of Eastern Ontario, 401 Smyth Road. Ottawa, Ontario K1H 8LI, Canada.
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