Accessory carpal bone fracture repair by means of computer‐assisted orthopaedic surgery in a Warmblood stallion

A 10-year-old, 595 kg Irish Warmblood stallion used for showjumping was presented with a marked right forelimb lameness at walk. The horse sustained dorsal plane fracture of the accessory carpal bone (ACB) when falling both carpi in flexion. repaired by means computer-assisted orthopaedic surgery (CAOS) using two cortex screws placed lag fashion. In second CAOS procedure, dorsoproximal fragment ACB removed after further proximal displacement had become apparent. Both surgical procedures were facilitated application fibreglass cast to immobilise carpus extension and allow placement patient tracker distant from site. One year surgery, returned full athletic activity. Neither antebrachiocarpal joint nor sheath distended. Control radiographs standing cone beam computed tomography showed complete osseous union osteophyte formation on caudal aspect radius border ACB.