Distal humeral Salter Harris (Type II) fracture repair by an ulnar osteotomy approach in a horse.

The research paper reports on a successful surgical procedure using an ulnar osteotomy approach to repair a Type II Salter-Harris fracture of the distal humerus in a young horse. The surgery included the use of Locking Compression Plates (LCP) which resulted in the horse’s comfortable mobility and normal cosmetic appearance at a six months follow-up.

Surgical Method

• The case revolved around a 3-month-old Standardbred filly diagnosed with a Type II Salter-Harris fracture of the distal humerus.
• Radiographic and computed tomography examinations were conducted to help with surgical planning.
• The surgical approach to the fracture was through an ulnar osteotomy, a procedure performed to align or lengthen a bone. In this procedure, the ulna bone in the forearm was cut, moved, and then fixed in a new position to allow access to the distal humeral fracture.
• The fracture was repaired using a 7-hole broad LCP, with screws inserted in lag fashion. This method provides stable fixation, allows for prompt mobilization, and encourages bone healing.
• Following this, the ulnar osteotomy was repaired using a narrow 7-hole LCP.

Results and Conclusions

• The adopted ulnar osteotomy approach successfully provided access to and stabilization of the distal humeral fracture.
• A six months follow-up on the filly revealed she was ambulating comfortably and her surgical site retained a normal cosmetic appearance, indicating successful healing and no adverse aesthetic implications post-surgery.
• The researchers concluded that the ulnar osteotomy approach is easily performed and can effectively aid in repairing Type II Salter-Harris fracture of the distal humerus.
• They also highlighted that LCPs offer a solution for repairing complex fractures, which were often associated with a dire prognosis in the past.
• Lastly, the research emphasizes the accessibility of equine distal humerus fractures via this surgical approach.