Numb: Why the FEI's Neurectomy Vote Should Matter to Every Sport Horse Owner

The Procedure the Sport Doesn't Talk About

Somewhere in the sport horse world right now, a horse is competing on feet it cannot feel. The procedure that made this possible -- palmar digital neurectomy, known in barn shorthand as "nerving" -- involves surgically cutting the nerves that carry sensation from the back of the foot to the brain. It is the last resort for navicular syndrome, a degenerative condition of the heel structures that the Merck Veterinary Manual identifies as the cause of approximately one-third of all chronic forelimb lameness in North American horses. And depending on whom you ask, it is either a humane extension of a useful career or a welfare failure dressed in clinical language.

In December, the Federation Equestre Internationale will vote on whether to settle the question. At the FEI General Assembly in Jiangyin, China -- scheduled for December 2 through 5, 2026 -- delegates will consider proposals to explicitly ban neurectomized horses from international competition, replacing a rule that the FEI's own veterinary director has called "difficult to understand" and "very difficult to enforce." The vote matters beyond the international ring. It will test whether the global governing body is willing to draw a bright line between managing pain and erasing it. And it will expose how far the United States lags in drawing any line at all.

What the Knife Actually Does

Palmar digital neurectomy is not complicated to describe. A veterinary surgeon makes a small incision at the back of the pastern, isolates the medial and lateral palmar digital nerves -- the wiring that transmits sensation from the heel and sole -- and transects them. The horse wakes up without heel pain for the first time in months or years. It trots sound. It jumps. It shows. What it does not do, from that point forward, is feel its feet.

The surgery is reserved for horses whose navicular pain has not responded to conservative treatment -- therapeutic shoeing, corrective trimming, intra-articular injections, bisphosphonates. Navicular syndrome is particularly prevalent in Warmbloods and Quarter Horses, with a peak incidence between the ages of six and ten -- precisely the years in which a sport horse is at its competitive prime. A 1993 study published in Veterinary Surgery by Jackman, Baxter, and colleagues found that among 57 horses undergoing the procedure between 1984 and 1990, horses used as hunter/jumpers appeared to be over-represented in the surgical population. The breeds and the discipline most common in American show barns are also the ones most likely to face this decision.

"The breeds and the discipline most common in American show barns are also the ones most likely to face this decision."

The Evidence Against Erasure

Proponents of neurectomy point to its clinical track record, and the numbers are not trivial. In the Jackman study, 74 percent of horses were sound one year after surgery. A larger and more recent multicenter study -- published in 2015 in the Equine Veterinary Journal by Gutierrez-Nibeyro and colleagues at the University of Illinois, the University of Florida, and the Marion duPont Scott Equine Medical Center -- found that 80 percent of 50 horses returned to their previous level of athletic use for a median of 20 months. For an owner watching a talented horse deteriorate under conservative care, those numbers represent a real reprieve.

The same evidence, read in full, tells a harder story. In the Jackman cohort, soundness dropped to 63 percent by two years, and 34 percent of horses with follow-up data developed post-operative complications -- most commonly recurrent heel pain as severed nerves regrew. The Gutierrez-Nibeyro study found that horses with pre-existing lesions of the deep digital flexor tendon -- a finding that is common in navicular cases but difficult to rule out completely, even with MRI -- had significantly shorter periods of pain relief after surgery. The procedure does not fix navicular disease. It erases the alarm. And when the alarm is off, the underlying pathology continues unchecked in a limb that now has no way to report damage.

That is not a theoretical concern. A 2023 case report in the Open Veterinary Journal by Larsen and colleagues documented two horses that developed navicular bone fractures and severe deep digital flexor tendinopathy within 12 and 19 weeks of bilateral palmar digital neurectomy -- catastrophic deterioration that the horses could not feel happening. A 2024 study in Veterinary Surgery by Whisenant and colleagues examined 85 horses and found that a more refined surgical technique -- dorsal-to-palmar neuroanastomosis, designed to prevent painful neuroma formation at the cut site -- did not reduce neuroma rates or improve outcomes. And research from Ghent University by Oosterlinck and colleagues, published in 2020 in Equine Veterinary Education, described "highly variable individual responses" across 40 neurectomized horses, with no reliable predictor of which animals would do well and which would not.

The FEI's Long Ambiguity

The FEI has, in principle, prohibited neurectomized horses from international competition for years. The current Veterinary Regulations state that horses are "not permitted to compete in FEI Events" with hyposensitive or hypersensitive areas of the body. The intent is clear enough. The enforcement has not been.

At Session 5 of the FEI Sports Forum on March 31, 2026, in Lausanne, Goran Akerstrom -- the FEI's Director of Veterinary and Equine Welfare -- laid out the problem in unusually direct terms. The hyposensitivity rule, he said, is "difficult to understand," and questions about it rank "among the most common" his department receives from national federations. Worse, it is "very difficult to enforce." There is no reliable field test for reduced sensation in a standing horse. There is no mandatory registry of neurectomy procedures. A horse that has been nerved can pass a standard veterinary inspection without raising a flag.

The proposals now headed for the General Assembly aim to close that gap. The FEI is considering two options: a prohibition on all forms of neurectomy in competition horses, or a targeted ban on palmar digital neurectomy specifically -- the procedure most directly tied to catastrophic welfare risk. Under either option, every neurectomy would be compulsorily registered in the horse's passport, with the FEI's digital passport platform, Equipass, serving as the enforcement mechanism. If the broader ban fails to win a majority in Jiangyin, the FEI has positioned the palmar digital ban as the minimum outcome -- an explicit prohibition on the most common and most contested form of the procedure.

The final draft of the proposed rule changes will be distributed to national federations on November 6. The vote follows roughly four weeks later. Between now and then, the debate will be intense -- and it should be. This is a consequential decision.

The Case for the Ban -- Honestly Made

The strongest argument against the ban deserves to be stated fairly. Neurectomy is a legitimate veterinary procedure. For a horse whose navicular pain has not responded to any other treatment, it can deliver real relief and meaningful additional years of soundness. The Gutierrez-Nibeyro data -- 80 percent returning to athletic use -- is not trivial. The alternative for many of these horses is chronic pain, early retirement, or euthanasia. A blanket prohibition on the surgery itself would be an overreach; no serious person is proposing that veterinarians stop performing neurectomies.

But the question before the FEI is not whether veterinarians should perform neurectomies. It is whether neurectomized horses should compete. And here the welfare calculus shifts decisively. Competition places extraordinary, asymmetric demands on the equine forelimb. A horse that cannot feel the structures absorbing those forces cannot protect itself -- cannot shift weight off a compromised limb, cannot hesitate before a bad distance, cannot signal its rider that something is wrong. The entire feedback loop between limb and brain, the proprioceptive mechanism that keeps horses sound across decades of athletic work, is surgically severed.

"The entire feedback loop between limb and brain -- the proprioceptive mechanism that keeps horses sound across decades of athletic work -- is surgically severed."

The FEI's mandate is not to regulate veterinary medicine. It is to regulate sport. And at the level of sport -- where horses are asked to perform under physical stress, in front of judges, for prizes -- the welfare standard must be higher than "the horse appears sound today." A horse that appears sound because its pain receptors have been cut is not the same as a horse that is sound. The distinction matters, and the FEI is right to codify it.

The American Silence

Whatever the FEI decides in December, it will govern only international competition. The vast majority of hunter/jumper showing in the United States takes place under USEF and USHJA rules -- and neither body has a specific prohibition on neurectomized horses.

USEF's Rule GR838, revised in December 2024, addresses "unethical treatment of the horse" and broadly prohibits actions that compromise a horse's health, safety, or well-being. It is a necessary rule and a well-intentioned one. But it does not mention neurectomy by name, does not require disclosure of the procedure, and does not establish that a horse competing without the ability to feel its feet raises a specific welfare concern. A trainer who presents a nerved horse in the hunter ring at a USEF-licensed competition faces no explicit regulatory barrier. There is no disclosure requirement. There is no passport notation. The horse that would be barred from the ring at a CSI in Aachen could show at Devon without a second look.

This is the gap that the December vote, whatever its outcome, will make harder to ignore. If the international governing body concludes that neurectomized horses are unfit for competition on welfare grounds, the American federations will face a pointed question: on what basis is the same horse fit to compete at home?

USEF has signaled awareness of the broader welfare landscape. The federation is conducting welfare-focused town halls throughout September 2026, gathering member input on possible rule changes. The FEI's own Multi-Discipline Task Force, announced in May 2026 and led by an independent facilitator, is reviewing welfare protocols across all disciplines and may produce recommendations that eventually reach national rulebooks. But eventual recommendations are not a standard. The American hunter/jumper community -- which represents the single largest segment of USEF membership -- deserves a clear domestic position on whether desensitized horses belong in the show ring.

What This Means for the Sport Horse Owner

If you own a Warmblood or sport horse, or if you are shopping for one, the neurectomy question is not abstract. Navicular syndrome is common enough in the breeds you ride that it will touch your barn, your trainer's program, or your next pre-purchase exam. The question is what happens after the diagnosis.

Neurectomy as a veterinary tool -- performed on a horse whose competition career is over, whose owner wants to provide comfortable pasture soundness -- is a different calculus entirely from neurectomy as a competitive tool. The first is pain management in the interest of the horse. The second is performance management in the interest of the rider. The FEI's proposed ban targets only the second use. A horse nerved for retirement soundness is not the horse the federation is worried about. The horse it is worried about is the one trotting into the ring next week on a surgically induced inability to report what its own body is telling it.

The vote in Jiangyin will not solve the problem by itself. But it will name it -- in the clearest language the FEI has used to date -- and it will create a standard against which every national federation, including ours, will be measured. For the sport horse buyer, the practical implication is straightforward: ask the question on the pre-purchase exam. Know whether the horse you are considering can feel its own feet. The regulatory landscape is shifting beneath us, and the horses that will have the longest, soundest futures in the ring are the ones whose soundness is real.