Arthritis in dogs: managing mobility loss in older dogs

Most older dogs have arthritis. By the time a Labrador, Spaniel, or Retriever is ten, the question is usually not whether they have it but how much, in which joints, and what to do about it. The most-cited UK survey of households with dogs found nearly half of dogs over eight showed signs of joint pain, and the figure climbs steeply from there.

This guide is for families whose dog has slowed down. It explains what is actually happening in the joints, how to recognise the signs at home before the dog is overtly lame, what the modern treatment landscape in the UK looks like, the everyday changes that often make the biggest difference, and how to know when mobility loss has become a quality-of-life question rather than just a management one. It is reviewed by an RCVS-qualified veterinary surgeon.

What arthritis actually is in a dog's joint

The cartilage at the end of each bone in a healthy joint is smooth, slightly elastic, and lubricated by a small amount of fluid. The whole assembly is designed to take decades of load without complaint. When the cartilage starts to break down, whether from cumulative wear, an old injury, hip or elbow dysplasia, or just the slow biology of ageing, the joint loses its smoothness. Bone responds by laying down extra bone at the edges. The lubricating fluid becomes less effective. The joint capsule thickens. The whole thing becomes stiffer, sorer, and slower to recover.

This isn't a single event. It is a progressive degeneration. Mild changes you can see on an X-ray often produce no signs the dog or family would notice; severe changes can sometimes produce surprisingly little obvious lameness. What the dog feels at home doesn't always match what the imaging looks like, which is why a good arthritis conversation rests on what the family is seeing, what the vet can elicit on examination, and the imaging together.

Some breeds are predisposed. Large and giant breeds top the list: German Shepherds, Labradors and Goldens, Newfoundlands, Bernese, Rottweilers. Spaniels, particularly the heavier working lines, are not far behind. Many small breeds get patellar and elbow problems rather than the classic hip picture. Mixed breeds carry the predispositions of whatever they're mixed with.

What it looks like at home

The early signs are easy to dismiss as "just getting older". They are also the moment when intervention does the most good.

The most common early pattern is stiffness on rising. The dog gets up slowly, takes a few stiff steps, then loosens off as they warm up. This stiff-then-loose pattern is so characteristic of joint disease that it almost always means it, even before any lameness is visible. The morning is usually the most pronounced; after a long sleep, after a long car journey, after lying in the garden for an hour.

Reluctance about specific things comes next. The stairs. Jumping into the boot. Getting onto the sofa they have always slept on. Walking up the slope where the walk used to start. Shorter walks. Wanting to turn for home before the usual point. Slowing on hills.

A change in shape. Muscles atrophy on the side or in the limb the dog is offloading. The opposite limb often becomes more developed because it's doing more of the work. The topline can lose definition. The dog stands slightly differently.

Personality shifts. Less tolerant of children or other dogs piling on. Less keen on being stroked over the hindquarters. Grumpier on being lifted. Some dogs become more clingy; some more solitary. New irritability in an older dog is pain until proven otherwise.

Visible lameness is often a later sign. Many dogs have meaningful arthritis for months or years before they limp. By the time they limp, there's usually more than one joint involved.

What a vet visit usually involves

A first arthritis consultation in a UK first-opinion practice typically includes a watch of the dog moving, both at walk and (where there's space) a turn or two; a hands-on examination of every joint with attention to range of motion, swelling, and a pain response; an assessment of muscle symmetry; and often a discussion of what the family has been seeing in everyday life.

X-rays are not always needed for a working diagnosis at the first visit, particularly in a typical-presentation older dog. They are useful when the picture is unclear, when there's reason to suspect a specific underlying cause (hip or elbow dysplasia, old trauma, cruciate disease), and when significant change is happening fast. CT and MRI sit further along, used selectively.

Bloodwork is often run alongside, partly to screen for other contributors to mobility loss (thyroid disease, for example) and partly because almost every long-term arthritis medication needs a baseline kidney and liver picture before starting.

A validated pain-scoring tool will often be used, most commonly the Canine Brief Pain Inventory (CBPI), an owner-completed questionnaire that turns "she's stiffer than she was" into a number that can be tracked across appointments.

The modern treatment landscape

UK arthritis treatment has shifted significantly in the last few years. The frame to hold in mind is multimodal: no single treatment carries the whole load, and small contributions from several places usually add up to a measurably better life than any one intervention.

Librela (bedinvetmab) is a monoclonal antibody given by a vet as a monthly subcutaneous injection. It binds nerve growth factor, which is central to the chronic pain signalling that arthritis produces. Licensed in the UK in 2021, it has changed the conversation for many older dogs, particularly those who can't tolerate long-term NSAIDs because of kidney or liver concerns. It works best alongside the other elements below; it is not a one-and-done fix. Side effects exist, albeit uncommonly, but they are worthy of consideration; your vet will discuss whether it is suitable for your dog.

NSAIDs remain the backbone of arthritis management for most dogs. Meloxicam, carprofen, robenacoxib, and others are all in routine UK use, given long-term with periodic kidney and liver monitoring. The question is rarely whether to use them, but which one, at what dose, and how often to check bloodwork. Some dogs respond markedly better to one NSAID than another; switching is reasonable if the first choice isn't working.

Adjunct pain medications. Paracetamol can be added for dogs (not cats, ever); the dose is different from human dosing and must be prescribed. Gabapentin and amantadine are used for chronic neuropathic-component pain. Tramadol is used less than it once was after newer evidence questioned its standalone efficacy for chronic dog pain. Steroid joint injections have a place in specific cases.

Weight. The single biggest non-medical intervention. Every kilo above ideal weight adds load through every joint, every step. Many dogs whose arthritis seemed advanced become noticeably more comfortable after losing even ten or fifteen percent of their bodyweight. The conversation can feel sensitive; the impact, measured at the next vet visit, is usually undeniable.

Controlled exercise. The aim is to maintain muscle mass without overloading the joints. Several shorter walks beat one long one. Steady on the flat beats hard on the hills. Swimming and hydrotherapy are excellent for dogs who tolerate water; some practices now run their own hydrotherapy services, and most areas have specialist canine hydrotherapy centres. Off-lead sprinting, sudden direction changes, and games of fetch are usually the worst culprits for tomorrow's flare-up.

Joint supplements. The evidence is mixed, the marketing is loud, and the spending is significant. Omega-3 fatty acids at therapeutic doses (typically EPA + DHA from fish oil) do have evidence behind them and are worth including. Glucosamine and chondroitin have weaker evidence but a long safety record; many vets include them on a "low risk, possible benefit" basis. Green-lipped mussel preparations sit similarly.

Environment. Often dismissed, often the cheapest change with the biggest comfort dividend. Non-slip rugs across smooth floors, ramps onto sofas and into cars, raised feeding stations to reduce neck strain, orthopaedic memory-foam beds, and warm rooms in winter. A dog who has been struggling on a laminate floor for years often becomes a noticeably more comfortable animal when the floor is no longer trying to slip out from under them.

Physical therapies. Veterinary physiotherapy, hydrotherapy, acupuncture (used by a vet trained in it), and laser therapy all have a place for the right dog. None are a substitute for the medical backbone; together, they often extend what that backbone can achieve.

What "doing well on treatment" actually looks like

A well-managed arthritic dog usually has: stiffness that has receded into the background; walks that look closer to normal length; an ability to do the things they've always loved, with adjustments to where and how; a CBPI score that has dropped and stays dropped between reviews; and stable bloodwork on whatever medications they're on.

The aim is not no signs of arthritis. The aim is a dog who is themselves, comfortably, for longer.

When mobility loss becomes a comfort question

For most dogs, this is a long, manageable conversation. Years of good time after diagnosis are realistic with consistent care. For some, particularly very large breeds, dogs with concurrent disease, or dogs whose joint changes were already advanced at first presentation, the conversation eventually shifts.

The signs the conversation is shifting tend to look like:

The combination of treatments that worked is no longer holding the line. Doses are at the upper end of safe ranges. New medications have been added and aren't moving the dial.

The dog has stopped doing the things that used to define them. They no longer come to the door, no longer follow the family from room to room, no longer want the walk they have always wanted. The personality that made them who they are has dulled.

Mobility itself becomes a daily struggle. Getting up from lying down takes obvious effort and sometimes help. Falls on smooth floors become more frequent. Going outside to toilet becomes harder, and accidents in the house start to happen.

More bad days than good days, measured over a fortnight rather than a hard week.

A sense, often felt before it can be articulated, that the dog is enduring their days rather than enjoying them.

If you are at that point or worried you might be, our Quality of Life Assessment is a structured way to think it through. The questions don't decide for you. They give you a way of seeing what you are already seeing.

When the conversation does turn towards end-of-life, home is often the right place. An arthritic senior dog rarely benefits from a car journey followed by the smells and sounds of a clinic. Our home euthanasia service is built around this. The line is open seven days a week if you'd like to talk it through.

References worth reading

• Anderson KL et al. Prevalence, duration and risk factors for appendicular osteoarthritis in a UK dog population under primary veterinary care, Scientific Reports, 2018.
• Brown DC et al. Development and psychometric testing of an instrument designed to measure chronic pain in dogs with osteoarthritis (the Canine Brief Pain Inventory), American Journal of Veterinary Research, 2007.
• Lascelles BDX et al. Frunevetmab, a felinized anti-nerve growth factor monoclonal antibody, for the control of pain associated with osteoarthritis in cats, JVIM, 2021. (Companion human-equivalent literature for dogs underpins bedinvetmab.)
• BSAVA. Manual of Canine and Feline Musculoskeletal Disorders, 2nd edition.
• Innes JF, Clayton J, Lascelles BDX. Review of the safety and efficacy of long-term NSAID use in the treatment of canine osteoarthritis, Veterinary Record, 2010.