Presentation
Trauma.
Patient Data
No fracture or malalignment. Bilateral iliac horns projecting laterally and bilateral flaring of the iliac crests and protuberant anterior superior iliac spines highly suggestive of nail-patella syndrome (Fong disease).
CT confirms the presence of bilateral iliac horns ("Fong prongs") which arise from the posterior surface of the iliac bones.
Renal transplant in the LIF.
Hypoplastic laterally subluxed patella. Enlarged tibial tuberosity. The lateral femoral condyle is slightly flattened and wider than expected.
Hypoplasia of the radial head. Hypoplasia and fragmentation of the capitellum. Dislocated proximal radio-ulnar joint and posterior dislocation of the radio-capitellar joint. Absent radial notch of the ulna.
Case Discussion
This case nicely shows several of the skeletal manifestations of Fong disease (nail-patella syndrome). The patient was diagnosed with the syndrome as an adolescent following multiple episodes of radio-capitellar, PRUJ and patella dislocations.
The patient had renal failure and required renal transplant over a decade ago.