The clinical signs, the radiographic appearance, and the treatment of
two cases of fracture of the accessory carpal bone are described. The
fractures were in the vertical plane. Surgical intervention consisted
out of fixation of the fracture with two lag screws. Follow-up informa
tion revealed that one horse became sound and returned to complete ath
letic activity whereas the other horse remained lame. A brief literatu
re review is given and the surgical treatment and the complications ar
e discussed.