Fractures of the pedal bone in the horse.

A series of 79 fractures of the pedal bone in various types of horses are reported and the clinical features described. The fractures were of 3 types--intra-articular or extra-articular, involving the wing of the pedal bone, and fractures of the extensor process. Forty-five horses with a fractured wing of the pedal bone were treated conservatively and 11 by immobilisation of the bony fragment with a compression screw. Conservative treatment was usually successful in the extra-articular fractures. Intra-articular fractures treated conservatively in animals under 3 years had a good prognosis. The results were not so satisfactory in older horses and surgical treatment proved to be the method of choice. All, but one, of the 23 fractures of the extensor process were treated conservatively. The prognosis was not always good, as secondary osteoarthritis of the interphalangeal joint sometimes developed.