Objectives: To describe the development of fragmentation of the medial coronoid process (FMCP) following antebrachial synostosis as a sequela to a radius ulna fracture in an adult dog.
Animal: A 6-year-old male neutered Siberian Husky.
Study design: Case report.
Methods: A male neutered Siberian Husky presented with bilateral complete fractures of the radius and ulna after being hit by a car. Bilateral antebrachial fracture repair was performed with dual plating. Unilateral radioulnar synostosis was identified 1 year post fracture repair. Acute progression of lameness occurred 3 years postoperative with elbow computed tomography (CT) and arthroscopy identifying FMCP.
Results: Limb function improved after arthroscopic removal of the fragmented medial coronoid process.
Conclusion: The pathogenesis of medial coronoid process disease remains unclear, with joint incongruity or instability considered most likely. This report describes the development of FMCP following synostosis of the radius and ulna in an adult dog.
