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Slinging Away The Blues

Clare Illingworth

Source :  Equine Research Centre

Clare Illingworth
This was the case of Kyra, a 20-month-old Trakhener filly, who suffered a broken leg after a paddock accident in January 2002. She was brought to the Ontario Veterinary College (OVC) in Guelph where a team led by surgeon Dr. Antonio Cruz treated her. “The fracture was a challenging one to repair because it was very close to the knee and was displaced and had many fragments,” said Dr. Cruz. After a lengthy discussion with the surgical team, owners Kevlynn and Barb Sacrey of Waterloo decided to proceed with a transfixation cast, a technique that involves steel pins being placed side to side above the fracture site and incorporated into a whole leg cast.

“The advantages and disadvantages of each approach were thoroughly explained,” said Kevlynn Sacrey. “I have raised this horse since birth. While we knew there was only a 10 per cent chance of recovery, we had to try.” Kyra was revived from the surgery and anaesthesia on a special tilt table. This helped her to avoid the struggle of getting up after general anaesthesia with a
full leg cast in place.

While the surgery and recovery were successful, there was still a long healing process to follow. Long bone fractures are difficult to heal in mature horses. During recovery it is difficult to rest a wounded leg while preventing stress injury to the supporting legs. Orthopedic implants cannot sustain heavy loads for extended periods of time; add to this the horse’s “fight or flight” nature, and their slow healing process, and you have a good chance for post-operative complications. Using a sling to relieve the load on the limbs presents a viable option, but long-term use of a sling may cause secondary problems, including severe pressure sores and serious digestive complications, such as colic.

Kyra (Photo: A. Cruz)
Kyra spent three-and-a-half months in the sling at the OVC Large Animal Clinic, where the majority of her 500 kg body weight was partially supported off her legs allowing the fracture to heal. She quickly mastered suspended slumber, and meals were fed on a platform. “It is extremely unusual for a horse to adapt to a sling as well she did,” said Dr. Cruz. “She was a trooper.”

Kyra was not alone in her battle. The Sacreys’ dedication was apparent, with regular visits and a party held at the clinic on her second birthday. Her recovery was taken one day at a time and optimism and perseverance proved to be the key to Kyra’s success. Both Dr. Cruz and the Sacreys have expressed mutual admiration for their efforts and patience during the long recovery. “We were so fortunate to have such a great staff helping Kyra, especially Dr. Cruz,” said Sacrey. “Because of his
handy work we still have our horse.” Kyra walked steadily out of the clinic on June 1, but will spend another seven weeks in a stall, be hand walked, and undergo rehabilitation exercises before having a final set of x-rays. She will have a permanent gait abnormality, but otherwise will be in good health. That means she’ll likely have a promising broodmare career, because of her impressive bloodline.

Dr. Cruz
Dr. Cruz, who hails from Spain, was hired by the University of Guelph’s Large Animal Clinic as a staff surgeon in 1999.

Dr. Cruz specializes in cardiovascular physiology and endoscopic surgery. When not pioneering new surgical techniques for horses, Cruz studies postoperative care and hopes to look at the caloric demands of surgery and recovery at the hospital, with the aim of reducing the weight loss that is so commonly associated with illness. “Looking at the metabolic effects in combination with a minimally invasive surgical procedure may greatly improve the care we can provide at OVC,” says Dr. Cruz.

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