Ulnar fracture deriving from metastasis of a primary hepatoblastoma in a Thoroughbred weanling

Summary An 8‐month‐old Thoroughbred filly presented for surgical repair of a fracture the right olecranon. Fixation with an orthopaedic plate and screws was attempted, complications intraoperative haemorrhage poor bone viability. The euthanised 5 days after repair, following post‐operative secondary fracture. Primary hepatoblastoma liver metastasis humerus, radius ulna were diagnosed at necropsy. A history ‘un‐thriftiness’ later described by farm manager.