Management of proximal sesamoid bone fractures in the horse.

The research investigates the management of proximal sesamoid bone fractures in horses. Case records of 49 horses of varied breeds were studied. The researchers classified the fractures, identified the breeds most associated with different fracture types, and evaluated the effectiveness of different treatment options.

Study Population and Methodology

• The study involves the case records of 49 horses presenting with proximal sesamoid bone fractures.
• The population comprises different breeds: 20 Thoroughbreds, 20 Standardbreds, 5 Quarter Horses, 2 Arabians, and 2 grade horses. This diversity allows for a wide scope of examination and potential identification of breed-specific tendencies.
• The fractures were classified for analysis into five categories: apical fractures, basilar fractures, abaxial fractures, middle one-third fractures, and bilateral comminuted-distracted fractures.

Observations and Findings

• Apical fractures proved to be most common in Standardbreds, with an equal prevalence of fractures on both medial and lateral sides.
• Basilar fractures were mostly observed in Thoroughbreds, with a notable prevalence in the right front fetlock’s lateral sesamoid bone.
• Bilateral comminuted-distracted fractures primarily occurred in the right front fetlock as well.

Evaluating Prognosis and Treatment Options

• The researchers compared the treatment outcomes of surgical intervention versus stall rest for apical fractures.
• The prognosis for horses treated with surgical removal of the fractured sesamoid appeared to be superior to that for those managed with stall rest alone.
• In the case of basilar fractures, regardless of the treatment method, the prognosis was generally poor.

Conclusion

• The study provides insights into breed susceptibility to specific types of proximal sesamoid bone fractures.
• It suggests that surgical removal may offer better treatment outcomes for apical fractures compared to stall rest alone. However, the prognosis for basilar fractures remains poor despite the treatment options.
• These findings can inform future practical approaches to managing proximal sesamoid fractures in horses, leading to better outcomes and potentially improved quality of life for the affected animals.