Radius fractures in the horse: a retrospective study of 47 cases.

The research article discusses a study that reviewed 47 cases of equine radius fractures (a specific type of bone fracture in horses) treated at The Ohio State University Veterinary Hospital between 1975 and 1985, with their outcomes related to the age of the horse and type of fracture.

Case Details and Classification

• The study reviewed the case records, radiographs (X-rays), and treatment outcomes for 47 horses that presented with radius fractures.
• These fractures excluded incomplete fractures and chip fractures, focusing on more serious, complete fractures.
• Both diaphyseal fractures, fractures occurring along the length of the bone, and fractures involving the growth plates (physes) were included in the study.
• Diaphyseal fractures were further classified as comminuted (shattered into multiple pieces), oblique (angled breaks), or transverse (horizontal breaks), and specified as proximal (near the body), mid-diaphyseal (middle of the bone), or distal (away from the body).
• Fractures involving growth plates were classified using the widely accepted Salter-Harris classification system, which categorizes growth plate fractures into five types based on the severity and location of the injury.
• The ages of the horses ranged from newborn (one day old) to adulthood (19 years old).

Patients and Treatments

• Out of the 47 patients, 19 horses were euthanized at presentation due to the severity of their injuries, presumably indicating a poor prognosis with treatment.
• The remaining 28 patients were treated, with 24 of these fractures being repaired via open reduction and internal fixation, a surgical procedure in which the bone fragments are first repositioned (open reduction) and then held together using internal fixtures like plates, screws or pins (internal fixation).

Findings and Conclusions

• The success of the treatment was found to correlate with the age of the horse and the type of fracture.
• The study concluded that adult radius fractures generally have a poor prognosis, implying difficulties and/or less favorable outcomes with these types of fractures in older horses.
• On the other hand, fractures in foals (young horses), specifically growth plate fractures or transverse or oblique diaphyseal fractures, showed a good to excellent prognosis when repaired adequately, suggesting that these fracture types in younger horses have a better chance of recovery with proper treatment.