Ulnar fracture after pancarpal arthrodesis: a case report

Abstract

Abstract Background: An ulnar fracture is a complication not previously described following pancarpal arthrodesis. Case presentation: An 8-year-old neutered mixed-breed female dog weighing 28 kg was presented with mild front limb lameness 4 weeks after pancarpal arthrodesis. Orthopedic examination revealed discomfort during the antebrachial manipulation. Radiographic examination revealed an ipsilateral diaphyseal ulnar fracture and periosteal reactions in the area of the fracture and the adjacent radius. Surgical stabilization of the ulna was not achieved. Cage rest was recommended for 4 weeks. The canine patient showed no lameness on clinical examination 2 weeks later. Periosteal reactions observed in X-ray control disappeared 8 weeks postoperatively. The ulnar fracture showed delayed union evident on radiographs at 17 weeks postoperatively. Conclusions: Since this is the first report of an ulnar fracture after pancarpal arthrodesis, there are no treatment recommendations for this complication. Based on the clinical outcomes of this case, conservative treatment of ulnar fractures after pancarpal arthrodesis is a viable option.