Quick answer: The two most common joint conditions in senior dogs are arthritis (acquired, usually age-related) and hip or elbow dysplasia (developmental, usually breed-related). Both show similar signs: lameness, reluctance to jump, stiffness after rest, slower on walks. Treatment is vet-led (NSAIDs, weight management, physiotherapy) supported by at-home changes: an orthopaedic bed, ramps instead of stairs, non-slip flooring, warming layers, and a sensible exercise plan. No joint supplement or supplement-based cure has strong evidence; the vet-supervised plan is what works.
Arthritis vs dysplasia
Two conditions account for most senior dog joint problems. They are different but share symptoms and management.
Arthritis (osteoarthritis, OA). A wear-and-tear condition. The cartilage that cushions the joint wears down over time, leading to bone-on-bone friction, inflammation, and pain. Acquired: it develops with age and use. Common in large breeds and overweight dogs. Affects 1 in 5 dogs over 7.
Hip dysplasia. A developmental condition. The hip joint does not form correctly, leading to looseness, abnormal wear, and early arthritis. Genetic: the predisposition is inherited. Most common in large breeds (Labrador, Golden Retriever, German Shepherd, Newfoundland, Bernese Mountain Dog). Symptoms usually appear between 6 months and 3 years, but the dog can live a full life with the right management.
Elbow dysplasia. The same condition as hip dysplasia but in the elbow joint. Common in Labradors, Golden Retrievers, and Bernese Mountain Dogs.
In a senior dog, the difference matters less than the management. A dog with end-stage hip dysplasia and a dog with severe arthritis have similar symptoms and need similar care: vet-led pain management, weight control, and at-home support.
Signs to watch
Six signs, any of which warrant a vet check.
- Lameness (favouring one leg, or a general reluctance to weight-bear).
- Reluctance to jump (onto the sofa, into the car, up stairs).
- Stiffness after rest (the classic "old dog" walk that loosens up after 10 minutes).
- Slower on walks (lagging behind, or stopping more often).
- Difficulty getting up from a lying position (pushing up with the front legs instead of squatting up).
- Behavioural changes (snapping when touched in a sore area, withdrawal from play).
The signs come on slowly. Owners often attribute them to "just getting old" until the dog stops jumping into the car or starts having house-soiling accidents because the back door is too hard to reach.
Vet-led treatment
The vet will start with three things.
1. NSAIDs. Non-steroidal anti-inflammatory drugs (such as meloxicam or carprofen) reduce joint inflammation and pain. They are the first-line treatment for arthritis in dogs. Long-term use needs blood work monitoring (every 6 to 12 months) to check kidney and liver function. Do not give a dog human NSAIDs (ibuprofen, paracetamol): they are toxic.
2. Weight management. Every extra kilo on a dog is 4 to 5 extra kilos on the joints. Weight loss is the single most effective joint intervention for overweight dogs. A 10% weight loss produces a noticeable improvement in mobility within 2 to 3 months. The vet will set a target weight and a portion-control plan.
3. Physiotherapy. Hydrotherapy (underwater treadmill) and structured physiotherapy strengthen the muscles around the joint, reduce pain, and slow the progression. Many UK vet practices refer to a hydrotherapy centre. The cost is usually £40 to £70 per session; a course of 10 sessions is typical.
Other vet-led options include:
- Cartrophen vet (polysulphated glycosaminoglycans), an injectable joint lubricant given as a course of 4 weekly injections. The evidence is moderate; some dogs show a clear improvement.
- Stem cell therapy or PRP (platelet-rich plasma). Available at specialist orthopaedic centres. The evidence is emerging; the cost is high (£1,000+).
- Surgery for severe hip or elbow dysplasia (total hip replacement, femoral head ostectomy, or arthroscopy). Specialist orthopaedic referral.
At-home support
The at-home changes that make the biggest difference.
1. Orthopaedic bed. A high-density memory foam bed reduces joint pressure during sleep. See our orthopaedic beds guide.
2. Non-slip flooring. Hardwood, tile, and laminate are hard on senior joints. A senior dog slips and scrambles on these surfaces, putting extra load on hips and elbows. Non-slip mats, runners, or yoga mats in high-traffic areas (the run from the kitchen to the living room, for example) make a real difference.
3. Ramps and pet steps. For the sofa, the bed, and the car. A senior dog should not be jumping up or down from height. Ramps are available for cars from £30 to £80.
4. Warming layer. Older dogs feel the cold more. Short-haired breeds (Boxer, Whippet, Greyhound) and dogs with chronic arthritis benefit from a jumper or coat in winter. See our coats and jumpers for UK options.
5. Sensible exercise. Short, frequent walks beat long, infrequent ones. 15 to 20 minutes twice a day is better than 60 minutes once a day. Avoid very high-impact activity (ball-throwing, jumping for frisbees) which accelerates joint wear. Swimming is excellent for arthritic dogs (low-impact, muscle-strengthening).
6. Weight control. The single most effective joint intervention. See the vet for a target weight and a portion plan.
Joint supplements
The market is full of joint supplements: glucosamine, chondroitin, green-lipped mussel, omega-3, MSM. The evidence is mixed.
- Omega-3 (fish oil). The strongest evidence. A 2013 study in the Journal of the American Veterinary Medical Association found that omega-3 supplementation improved mobility in dogs with osteoarthritis. The dose matters (high EPA + DHA, not generic fish oil).
- Glucosamine and chondroitin. Moderate evidence. May help some dogs; the effect is usually subtle.
- Green-lipped mussel. Moderate evidence. Anti-inflammatory properties.
- MSM. Weak evidence.
- CBD oil. Anecdotal evidence only in dogs; the legal status in the UK is restrictive.
A high-quality omega-3 supplement is the most evidence-supported joint supplement. A combined glucosamine + chondroitin + green-lipped mussel product is a reasonable add-on. Anything more is probably placebo.
When to see the vet urgently
Five red flags in a senior dog with joint issues that need a same-day vet call.
- Sudden inability to bear weight on a leg.
- Yelping or snapping when touched in a joint area.
- Visible swelling or heat in a joint.
- Dragging a back leg (possible disc disease or spinal issue).
- Refusing to move at all.
FAQ
Frequently Asked Questions
How do I know if my senior dog has arthritis?
The 6 main signs: lameness, reluctance to jump, stiffness after rest, slower on walks, difficulty getting up, behavioural changes (snapping when touched in a sore area). The signs come on slowly. See the vet within a week of noticing 2 or more.
What can I do at home for an arthritic senior dog?
Five high-impact changes: an orthopaedic bed (high-density memory foam), non-slip flooring, ramps or pet steps, a warming layer in winter, and sensible exercise (short frequent walks, not long ones). Weight control is the single most effective intervention for overweight dogs.
Do joint supplements work for dogs?
Omega-3 (fish oil) has the strongest evidence. Glucosamine and chondroitin have moderate evidence. Green-lipped mussel is moderate. MSM is weak. The single most effective joint intervention is weight control in overweight dogs, followed by vet-led NSAIDs and physiotherapy. Supplements are an add-on, not a primary treatment.
See our orthopaedic beds guide for the right bed for an arthritic dog, and our summer safety guide for warm-weather exercise tips.
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