Study: Surgical Intervention For Specific Poll Injuries Is Often Successful

News — Sat, 01 Jan 2022 20:32:09 +0000

Horses suffering from poll injures involving the cranial nuchal bursa often behave in very specific ways, reports EQUUS magazine. They often stretch down their neck and carry their heads low, and they are often reluctant to flex through their poll and avoid being on the bit.

Bursa are fluid-filled sacs found between bones. The soft tissue is designed to ease friction between the two structures. The cranial nuchal bursa is located between the nuchal ligament and the atlas vertebra.
Inflammation in this bursa, called cranial nuchal bursitis, can cause pain, limited flexion and decreased athletic performance. A study has shown that surgical intervention is often successful in treating this injury.

Dr. José M. García-López, of Tufts University, led a research team in reviewing the records of 35 horses diagnosed with cranial nuchal bursitis over the past 25 years.

The horses were between 5 and 22 years old, with a median age of 13. The majority of the horses were sport horses, primarily competing in dressage, which García-López noted may support the idea that specific ways of going could encourage the development of cranial nuchal bursitis.

Records showed that 14 of the horses were treated with anti-inflammatories, while the rest underwent a minimally invasive surgery to correct the problem. The surgery, called a bursoscopy, allows a surgeon to flush and remove debris from the bursa.

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The researchers found that 78.6 percent of the horses which underwent surgery returned to their previous level of work, while 66.7 percent of horses which received only medication were able to return to work. The horses that responded well to non-medical management generally presented with solely fluid accumulation, with minimal debris in the bursa or synovial thickening.

García-López and his team concluded that horses with bursa inflammation alone could be treated with anti-inflammatory medication; however, if debris is present in the bursa, surgery is recommended. The sooner the surgery is performed, the more likely the horse will return to an athletic career.

Do Sedatives Affect Lameness Exam Outcomes?

News — Wed, 11 Nov 2020 18:52:05 +0000

Lameness exams on high-energy horses can be difficult to complete, especially if they involve joint or nerve blocks. Occasionally overly exuberant horses must be sedated for the exam to be performed to keep both horse, handler and vet safe. Concerns have been raised that sedating the horse may mask a horse's pain response, and potentially compromise the results of the joint or nerve block and the exam.

A group of Brazilian veterinarians tested the effects of xylazine and xylazine used in conjunction with butorphanol on induced hind-end lameness. Drs. Antônio Alcemar Beck Júnior, Flávio Desessards De La Côrte, Karin Erica Brass, Stéfano Leite Dau, Gabriele Biavaschi Silva and Marina de Aguiar Camillo compared the results of the sedated horses to the results of a control group of horses that did not receive sedation.

The researchers used 16 horses and placed metal clamps around their hoof wall with small screws. The screws were tightened to induce lameness until the horses became a Grade 3 or 4 (out of 5) on the AAEP lameness scale. This was done immediately before the administration of sedation.

Each horse received all three treatments: no sedation, xylazine alone or a combination of xylazine and butorphanol. The scientists concluded that xylazine used alone or in conjunction with butorphanol (at the recommended doses) can be used as chemical restraint without masking lameness intensity. They note that additional research must be done to determine how detomidine and romifidine might interact with butorphanol during hindlimb lameness evaluations.

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Study: Surgical Intervention For Specific Poll Injuries Is Often Successful

Do Sedatives Affect Lameness Exam Outcomes?