Abstract
This study aimed to determine whether a true synovial structure exists over the olecranon tuberosity, which could be attributed to a noninflamed olecranon bursa. Contrast radiography, gross anatomical dissection, and histopathology were used to evaluate the olecranon bursa in horses with no previous elbow pathology. The radiographic study revealed that the contrast was positioned subcutaneously, superficial to the long head of the triceps and its insertion on the olecranon tuberosity and did not extend cranial to the triceps tendon. The contrast region was consistent in shape, size, and location. Gross anatomical dissection of the area revealed a potential bursal space overlying the tendons of the lateral and medial heads of the triceps brachii and the tensor fascia antebrachii in the normal horse. Histopathology confirmed a bursal lining, which was of mesenchymal origin and suggestive of a single-cell membrane, lined by fibroblast-like synoviocytes.
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