Hip dysplasia in a big old dog: Librela, gabapentin, or surgery

A friend called me last month about her 11-year-old shepherd mix, Otto. Ninety pounds. He'd started doing that thing where he sits halfway down, hovers, then drops the rest of the way like a folding chair giving up. Her vet offered three options in the same visit: a monthly Librela injection, daily gabapentin, or a referral to a surgeon for a femoral head ostectomy. She wanted to know which one I'd pick. I told her I'd read the papers and call her back.

Hip dysplasia in a senior large-breed dog is almost always really osteoarthritis in a hip that was malformed from puppyhood. The joint is shallow, the cartilage is gone, and the bone underneath is remodeling in ways that hurt. Pain management is the whole game for most of these dogs, because the underlying anatomy isn't getting fixed without a saw.

Librela (bedinvetmab). A monoclonal antibody against nerve growth factor, FDA-approved for canine osteoarthritis pain in May 2023. One injection a month. The pivotal field study — Corral et al., Journal of Veterinary Internal Medicine, 2021, funded by Zoetis — randomized 287 dogs with OA and found bedinvetmab significantly outperformed placebo on owner-assessed pain scores at day 28. Effect sizes were real, not huge. Since the US launch, the FDA has received thousands of adverse event reports, including ataxia, new neurologic signs, and worsening mobility in some dogs; the agency issued a letter to veterinarians in early 2024 asking them to report cases. Adverse events aren't proof of causation, but the signal is not nothing.

Gabapentin. Cheap, generic, widely prescribed. Used as an add-on for chronic pain in dogs for years, mostly off-label. The evidence is thinner than the prescribing volume suggests. A 2022 systematic review in Frontiers in Veterinary Science (Ruel and Steagall) found weak support for gabapentin monotherapy in canine OA pain — studies were small, outcome measures inconsistent, and a placebo response kept showing up. It's sedating, especially in the first week, and seniors feel that more. Useful as part of a stack. Not impressive on its own.

Surgery. For an 11-year-old shepherd, total hip replacement is rarely the right call — the recovery is long and the dog needs to be a good candidate. Femoral head ostectomy (FHO) is the realistic surgical option: remove the ball of the femur, let a fibrous false joint form. It works better than people expect in dogs under 50 pounds. In a 90-pound dog it's a salvage procedure. Outcomes in large breeds are more variable; a retrospective review by Off and Matis (translated from Tierärztliche Praxis, 2010) following 132 FHOs found owner satisfaction dropped with body weight, and full functional recovery took six months or more.

For most large-breed seniors with dysplastic hips, the decision tree is less dramatic than the three-option visit makes it sound. Surgery is usually off the table unless the dog is failing everything else and still has years of good life ahead. The real question is which medical stack.

Librela first, in most cases. Monthly injection, no daily pilling, and the trial data is the strongest we have for OA pain in dogs. Watch the dog carefully for the first two months. If anything neurologic shows up — new wobble, new weakness, a change that wasn't there before the shot — stop and report it. Gabapentin layered on top when the Librela isn't quite enough, usually at night, because the sedation helps them sleep through the stiff hours. An NSAID like carprofen or meloxicam in the mix if kidneys and liver check out. And the unsexy stuff that actually moves the needle: keep the dog lean (Kealy's lifetime Labrador study, industry-funded by Nestlé Purina but methodologically solid, showed lean dogs lived about two years longer and had dramatically less OA), short frequent walks instead of weekend warrior hikes, rugs on the slick floors.

I told Otto's owner to try Librela, add gabapentin at bedtime if he was still stiff after a month, and skip the surgical consult unless both failed. Four weeks in, he's going down stairs again.

Bottom line: For a large-breed senior with dysplastic hips, Librela plus weight control is the best-evidence starting point; surgery is a last resort, not a first option.

Ask your vet to check a baseline CBC, chemistry panel, and urinalysis before starting Librela, and to do a focused neurologic exam at the one-month recheck. If your dog is on an NSAID already, ask whether to keep it or pause it — there's no hard rule, but the question is worth making them answer.