Management of Long Bone Fractures in Two Dogs Using 4.5mm Dynamic Compression Plates.

The objective of this study was to describe clinical outcomes associated with the use of the 4.5mm dynamic compression plate (DCP) for repair of long bone fractures in two giant breed dogs. Case 1, a 6-year-old male Great Dane, underwent surgical stabilization of a comminuted antebrachial fracture with a 4.5mm broad DCP fixation of the radius in addition to a 3.5mm seven-hole locking compression plate (LCP) that was placed on the ulna. The patient developed a recurrent surgical site infection that was considered a major complication. Follow-up 2 years later demonstrated clinical union of the fracture radiographically, with a Grade 1 of 5 lameness of the thoracic limb and limited range of motion in the carpus. Case 2, a 1-year-old male Saint Bernard, underwent surgical stabilization of a short oblique humeral fracture with a 4.5mm broad DCP fixation. The patient experienced a delayed union and required revision surgery for bone graft placement 3 months after surgery. Clinical union occurred 8 months postoperatively. The use of 4.5mm DCP for long bone fracture repair in two giant breed dogs was associated with successful fracture healing and an acceptable outcome without implant breakage in the face of delayed bone healing that was associated with major complications and continued lameness.