A two-year-old Palomino gelding was referred to Cornell on June 4, 2007 for ataxia of five weeks duration. A neurologic exam confirmed significant ataxia (2/4 forelimbs, 3/4 hindlimbs) and radiograps revealed a fracture and bony callus formation at the left facet of C5-C6. A myelogram indicated reduced mobility at C5-C6, and cord compression caudally at C6-C7. One week later, the horse was taken to surgery for ventral interbody fusion at both C5-C6 and C6-C7. The disk space at each site was drilled out, and two threaded basket implants were inserted and packed with cancellous bone to induce fusion of the vertebral bodies. This surgery is generally reported to return about 50% of horses with Wobbler syndrome to their intended use. Although the prognosis in this case was guarded for use as a riding horse, there is a published case report of a horse that returned to racing after surgical treatment of a similar lesion. This case illustrates how an injury at one site in the spinal column can impact the adjacent vertebrae, and highlights the importance of the myelogram for diagnosis and treatment of compressive spinal cord lesions.