Challenging differential diagnosis, Rare disease
Luís Mata Ribeiro, Miguel Alves Botton
(Department of Plastic and Reconstructive Surgery, Hospital São José, Lisbon, Portugal)
Am J Case Rep 2019; 20:790-793
Trapezoid fractures are very uncommon, accounting for less than 1% of all wrist fractures. Isolated fractures of this bone are even more rare, with just a few reports in the literature. The trapezoid bone has a very stable position within the wrist, forming a relatively immobile joint with the second metacarpal base distally. It is also connected by very strong ligaments to the trapezium, capitate and, scaphoid. Trapezoid fractures occur when a strong bending or axial force is applied to the second metacarpal base.
CASE REPORT: We present a clinical case of an isolated, non-displaced, trapezoid fracture in a young white male, which was treated with cast immobilization for 4 weeks and physical therapy. Complete functional recovery was achieved 3 months after the injury, without any pain or tenderness.
CONCLUSIONS: Fractures of the trapezoid bone usually have a good clinical outcome. Nonetheless, we need to be very suspicious about this diagnosis since radiography is apparently normal in almost all such cases and clinical examination results may not be entirely clear.
Keywords: Carpal Bones, Tomography, X-Ray Computed, Trapezoid Bone, Wrist Injuries