Using Medline, seven articles were discovered in the English language, comprising eight fractures of the trapezoid bone. (5-11) Of these, only four cases detailed acute, isolated trapezoid fractures, the mechanisms of which were described as an axial load (5,6) or bending stress (7) transmitted indirectly to the trapezoid through the second metacarpal.
(1-4) In contrast, fractures and dislocations of the trapezoid bone have received far less attention, likely because of the relative rarity of these injuries and consequent inexperience with their diagnosis.
Radiograph of the wrist (Figure 1) showed a circular punched-out lytic lesion involving scaphoid, capitate, and trapezoid bones. Metacarpals and phalanges were normal.
The radiograph (Figure 2) shows a 'Scalloping sign' in capitate and a punched-out lytic lesion involving the scaphoid, capitate, and trapezoid bones. The radiograph provides (Figure 3) anteroposterior views of both feet demonstrating punched-out lytic lesions in the 1st metatarso-phalangeal joints with marginal erosions in the metatarsal head.