Os Supranaviculare as a Predisposing Factor to Navicular Stress Fractures

Teaching Point: An os supranaviculare is a variant of the anatomy which however may predispose to symptoms.     

Ewing’s Sarcoma Mimicking an Avulsion Fracture

Teaching Point: In the absence of a clear history of trauma, avulsion of the lesser trochanter should raise a high index of suspicion of an underlying malignancy.     

Fibrolipoma Causing Carpal Tunnel Syndrome

Teaching point: A space-occupying lesion should be considered in the differential diagnosis of progressive unilateral carpal tunnel syndrome.     

Lyme Disease: A Probably Underdiagnosed Cause of Mono-Arthritis

Teaching point: Meticulous anamnesis and a high index of suspicion is needed for the diagnosis of Lyme arthritis.     

Small Bowel Volvulus Complicated by Bowel Infarction

Teaching Point: Torsion of a segment of the small bowel and its mesentery, together with closed loop obstruction and absent enhancement of paper-thin small bowel walls, is an alarm sign for small bowel volvulus complicated by acute bowel infarction.