Magnetic Resonance Imaging Findings in Small Patella Syndrome

Small patella syndrome (SPS) is characterized by aplasia or hypoplasia of the patella and pelvic girdle abnormalities, including bilateral absence or delayed ossification of the ischiopubic junction and infra-acetabular axe-cut notches. Here, we report a case of SPS in a 26-year-old female. Magnetic resonance image (MRI) showed a small patella with thick eccentric non-ossified patellar cartilage and femoral trochlear dysplasia with hypoplastic patellar undersurface. To our knowledge, this is the first report of MRI findings in SPS. MRI findings could be clinically relevant because elongation of the medial patellofemoral ligament and trochlear dysplasia with eccentric non-ossified patellar cartilage might lead to patellofemoral maltracking with an osteochondral lesion or acute dislocation or an extensor mechanism injury. Though the patient presented in this case report only had a gastrocnemius injury at the origin site, physicians should carefully examine abnormalities with MRI when an SPS patient has a trauma to the knee.

Turret Exostosis of the Phalanx withTendon Rupture : A Case Report

A turret exostosis is a rare complication of minor trauma to the dorsum of the fingers. In 1966, Wissinger reported first and called turret exostosis. Until now any case have not been reported in Korea. A twenty year-old man complained a painful mass on dorsum of the middle phalanx of the left 4th finger. Thirteen months ago, he had deep laceration of the left 4th finger and extensor tendon was ruptured totally with dorsal cortical breakage of the middle phalanx. Radiologically, there is a smooth, dome shaped, and well-defined osseous mass fused to the underlying bony cortex on the earlier injury site. This is a finding that suggest turret exostosis. We report a case and a brief review of literature.