Keep Going, Knowhere: Jump Champion Still Winning on Bionic Tendon

by Fran Jurga | 21 November 2008 | www.hoofcare.blogspot.com

Image by &ndie/courtesy of Flickr

News comes and go. Horses come and go. Every once in a while a story or a horse comes back into the headlines and you say, "I'll be darned..."

Last winter we reported on the jubilation of the veterinary community over the success of the jump racer Knowhere, who came back from tendon surgery to excel again at this most grueling of tests for a front tendon. Knowhere kept running, kept jumping and often, kept winning. I lost track of him after he fell at a fence in the Cheltenham Gold Cup last March, and thought he'd been retired.

But another racing season has just begun in England and a few weeks ago, Knowhere launched into his 2008 campaign...as a ten-year-old. He came home first in the Old Roan Chase at Aintree, near Liverpool, five years after bowing and having stem cells from his sternum inserted into the bulging superficial flexor tendon of his right front leg.

The technique used for Knowhere, called VetCell, is different from the normal fat-derived stem cell treatment.

Click here to go back and read about Knowhere's treatment and all the people who will be cheering for him next Saturday in the Hennessy Gold Cup. His tendon will have to hold up over a distance of 3 miles, 2 and a half furlongs and carry him over 21 fences. The race is the oldest commercially sponsored sporting event in Europe, and Knowhere, who is trained by Nigel Twiston-Davies and ridden by Paddy Brennan, will face 53 others if they all are fit to run.

There may be plenty of horses racing with bionic parts!


© Fran Jurga and Hoofcare Publishing.

Fran Jurga's Hoof Blog is a between-issues news service for subscribers to Hoofcare and Lameness Journal. This blog may be read online at the blog page, checked via RSS feed, or received via a digest-type email (requires signup in box at top right of blog page).

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Carbon-Fibre Hoof Supports Put Event Horse Back on Course

Vetcell’s Carbon Fibre Hoof Support Patches (HSP), have helped a flat-footed event horse in Great Britain, the company tell us. The HSP is a simple and affordable way to support and treat collapsed heels in competitive horses.

The patch was developed and patented by Peter Day DipWCF, farrier at the Royal Veterinary College in England and the RVC’s locomotor research group, two years ago.


According to Vetcell, Millie Tonks, competitor and British Eventing accredited trainer, was concerned when her seven-year-old thoroughbred x warmblood event mare became short-striding and uncomfortable when the ground became firmer during the early part of last year’s eventing season. The mare had previously suffered with collapsed heels and an intermittent lameness but radiographs had not revealed any specific problems.

Millie recalls: ”The mare was going really well at the beginning of the 2007 season and was being consistently placed. But when the ground started to get a little firm she became less extravagant with her jumping and was clearly not comfortable although she wasn’t actually lame.”

Millie’s vet, Susannah Reynoldson at Isle Valley Equine Clinic in Somerset continues: “The horse has typical flat Thoroughbred feet and had very little horn growth. She was tender in both feet and not truly comfortable in her stride. I had recently read about the HSP and thought it was worth a try. The results have been impressive.”

The HSP is a carbon fibre/resin composite sheet which is applied by the farrier to the hoof wall, using epoxy-type adhesive. Tests show that it increases the bending strength of the hoof wall by up to 40 percent, allowing the tubules within the heel to retain their strength, rather than collapsing, as the hoof grows, according to Vetcell. The goal is to prevent over-deformation of the compromised foot and thereby helps to maintain soundness.

Collapsed or under-run heels are one of the most important and common foot abnormalities faced by owners and trainers. The prevalence is so high in Thoroughbreds (reportedly affecting the majority of the breed in Britain) that it can lull individuals into thinking that the condition is a normal hoof variation rather than a serious pathological deviation.

The collapse of the heel is believed to contribute to many foot-related problems such as navicular syndrome, chronic heel pain (bruising), coffin joint synovitis, quarter cracks, heel cracks, and gait interference problems.

Despite its prevalence the condition often goes unaddressed until the horse actually becomes lame.

For further information please contact VetCell by email: info@vetcell.com.

Note: No, I don't know why the horse is nailed in the toe and yes, I agree, that this foot could use carbon-fibre support for its entire circumference. Barefoot advocates will say that this horse could be helped with a layup and rehab hoofcare, and that is true, but the owner was obviously determined to compete the horse. 

Question: What do you think is the effect of selective reinforcement of specific points on the circumference of a weakened foot? I want to see these patches on some horses and see what other applications people come up with for this interesting material.