Scapulohumeral arthrodesis in three Shetland ponies: Good long‐term outcome after major postoperative complications

Summary

This case series describes three Shetland ponies that underwent scapulohumeral arthrodesis (SHA) because of shoulder dysplasia and osteoarthritis. Each case had severe complications, which included a humeral fracture in one pony and a scapular fracture in the other two. The complications were attributed to anatomical features in miniature breeds, coupled with implant‐related factors, including oversized plates and suboptimal placement of screws. Conservative management, particularly the use of the animal rescue and transportation sling (ARTS), was successful for treatment of the scapular fractures, while the humeral fracture required surgical revision. Despite these complications, all ponies had a satisfactory long‐term outcome, highlighting the usefulness of SHA as a salvage procedure in small equids. The difficulties encountered during surgical planning emphasise the need for further morphological studies of the humerus and scapula in Shetland ponies and other small equids. This will aid in implant selection and further refine surgical technique, thereby reducing the risk of severe complications and improving long‐term outcomes for small equids with SHA.