Presentation
Right hip pain.
Patient Data
There is asymmetric ischiopubic synchondrosis with the right slightly more lucent and expansile than the left side. This is felt to represent a normal variant, van Neck-Odelberg disease.
The remainder of the pelvis and particularly both hips appear normal.
Interval closure and ossification of the right ischiopubic synchondrosis on a radiograph performed 6 months later. While it still appears slightly larger than the left, the right ischiopubic synchondrosis is of the same density as the adjacent normal bone.
Case Discussion
Asymmetric ischiopubic synchondrosis is a recognized pediatric skeleton normal variant. Focal tenderness in this region is an important clinical finding to exclude other pathologies such as osteomyelitis, stress fracture or bone tumors.
This was likely a normal variant as our patient showed interval synchondrosis ossification/closure.
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