Lameness associated with the bicipital bursa in an Arab stallion.

The research article explores a case study of chronic lameness in a five-year-old Arab stallion attributed to complications in the bicipital bursa, leading to a diagnosis of chronic fibrinous bursitis. Multiple diagnostic methods, including local anaesthesia, gamma scintigraphy, radiographic and ultrasonographic examinations, and endoscopy, were employed to pinpoint and understand the ailment, ultimately resulting in the decision of euthanasia.

Understanding the Problem

• The study revolves around a five-year-old Arab stallion suffering from severe, chronic lameness in its left forelimb. Lameness in horses is commonly an indication of pain or discomfort, often linked to issues in the bones, tendons, or soft tissues.
• This veterinary case identifies the bicipital bursa—an area of the horse’s shoulder—as the source of the problem, localised through the use of local anaesthesia and gamma scintigraphy, a diagnostic procedure that uses radioactive tracers to detect abnormalities.

Diagnosis

• The research team carried out radiographic and ultrasonographic examinations of the proximal humeral tubercles and the bicipital bursa. These tests showed new bone growth in the area of the intertubercular grooves (part of the horse’s shoulder) and irregularities in the soft tissues of the bicipital tendon and bursa.
• The usage of a standard arthroscope—an instrument used for visualizing, diagnosing and treating joint problems—under general anaesthesia proved pivotal in the diagnostic process. The process, generally known as arthroscopy, allowed the veterinarians to examine the internal structure of the bicipital bursa directly.
• Through these substantial evaluations and their findings, the horse was diagnosed with chronic fibrinous bursitis, a condition characterized by inflammation of the bursa—a fluid-containing sac that reduces friction between different tissue layers—and the presence of fibrin, a protein involved in blood clotting.

Outcome

• Postmortem examinations revealed marked fibrocartilage fibrillation—wearing away of the cartilage—and the formation of adhesions—fibrous bands that can result from injury—in the stallion. These findings backed up the chronic fibrinous bursitis diagnosis.
• In response to the severe discomfort faced by the horse and unresolvable nature of the chronic condition, the decision was made to euthanize the stallion. This outcome underlines the severe implications of such chronic conditions in equine health and the importance of early diagnosis and treatment in horses.