## Overview Fistulous withers is infection and inflammation of the supraspinous bursa located between the nuchal ligament and the dorsal spinous processes of the withers. It produces painful swelling and draining tracts. Historically associated with Brucella, it can also result from other bacteria or trauma. ## Causes Bacterial infection (including Brucella abortus in some regions), trauma from ill-fitting tack, or penetrating wounds. ## Diagnosis Clinical appearance of withers swelling and draining tracts, culture of discharge, and imaging to assess bursal involvement. ## Treatment Surgical debridement of infected tissue, prolonged antibiotics based on culture, and local wound care. Recurrence is common. Recovery is often prolonged. ## Recovery and Prognosis Guarded. Many cases require multiple surgeries. Chronic fibrosis can remain. ## Prevention Proper saddle fit, hygiene, and separation from cattle in Brucella-endemic areas.
swelling, heat, and pain over the withers; draining tracts with purulent discharge; extreme sensitivity; girthiness; fever in systemic cases
## Overview Fistulous withers is infection and inflammation of the supraspinous bursa located between the nuchal ligament and the dorsal spinous processes of the withers. It produces painful swelling and draining tracts. Historically associated with Brucella, it can also result from other bacteria or trauma. ## Causes Bacterial infection (including Brucella abortus in some regions), trauma from ill-fitting tack, or penetrating wounds. ## Diagnosis Clinical appearance of withers swelling and draining tracts, culture of discharge, and imaging to assess bursal involvement. ## Treatment Surgical debridement of infected tissue, prolonged antibiotics based on culture, and local wound care. Recurrence is common. Recovery is often prolonged. ## Recovery and Prognosis Guarded. Many cases require multiple surgeries. Chronic fibrosis can remain. ## Prevention Proper saddle fit, hygiene, and separation from cattle in Brucella-endemic areas.
swelling, heat, and pain over the withers; draining tracts with purulent discharge; extreme sensitivity; girthiness; fever in systemic cases