Fraktur Os trapezoideum
Trapezoid
fracture • Isolated trapezoid fracture - Ganzer Fall bei Radiopaedia
nicht verwechseln mit: Fraktur Os trapeziumTrapezoid fractures are an uncommon carpal fracture. They typically occur as the result of axial force through the second metacarpal.
Epidemiology
They account for ~0.4% of all carpal fractures .
Radiographic features
The trapezoid is in a relatively immobile, and protected location hence the rarity of an isolated fracture. Given the wedged shape and weaker dorsal ligamentous support, fractures will dislocate in the dorsal direction . It is often associated with a second metacarpal fracture.
Treatment and prognosis
Treatment varies from conservative management to open reduction internal fixation, failure to recognize can lead to functional problems such as decreased grasp power .
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Assoziationen und Differentialdiagnosen zu Fraktur Os trapezoideum:
