Labrador Retriever Joint Problems: What Goes Wrong, When It Starts, and What Actually Moves the Odds

Labradors are not built badly. There is no exaggerated spine here, no steep croup, no dwarfed legs — this is a moderate, unmodified working dog, and that makes it unusual among the breeds on this site. Its defining orthopedic risk is not conformation at all. It is a fourteen-base-pair deletion in a gene that governs how hungry the dog feels and how slowly it burns, sitting on top of the two joints this breed genuinely inherits badly: elbows and hips. Everything below follows from that. If you want the arthritis playbook specifically, we wrote that separately in arthritis in Labradors; this page is the whole lifespan.

The build, and what it costs#

Look at a Labrador beside the other breeds in this section and the striking thing is how ordinary it is. Mean adult bodyweight in UK primary-care records is 33.0 kg — 35.2 kg for males, 30.4 kg for females.^[1] Normal angulation, normal leg length, normal back. Nothing about the frame is asking for trouble.

The trouble is in the appetite, and this is where the breed stops being ordinary.

Researchers at Cambridge sequenced obesity candidate genes in Labradors and found a 14-base-pair deletion in POMC, the gene that produces several of the signalling molecules the brain uses to regulate body weight. The deletion disrupts the coding sequence for β-MSH and β-endorphin. Of 383 UK Labradors, 78% were wild-type, 20% carried one copy and 2% carried two — an allele frequency of 12%, meaning roughly a fifth to a quarter of Labradors carry at least one copy. Each copy was associated with about 1.9 kg more body weight and a 9.9% higher score on a validated food-motivation questionnaire. Across every other breed tested, the deletion turned up in only one: the flat-coated retriever, the Labrador's close relative.^[2]

The same group went back and measured what the deletion does to the other side of the equation. Affected dogs showed markedly lower energy expenditure — resting energy expenditure approximately 25% lower at adult weight.^[3]

Two honest qualifications on that 25%, because it is the number people will quote. The energy-expenditure work was done in flat-coated retrievers carrying the same deletion — 9 wild-type against 10 homozygous — with the feeding trial run separately in 24 Labradors. And the study found no difference in satiety: dogs with the deletion ate the same amount at a modified ad libitum meal as dogs without it. The mechanism is not a broken off-switch. It is increased wanting before the meal, plus a slower burn between meals.

So: your Labrador is not badly trained around food, and this is not a failure of household discipline. Roughly a quarter of this breed is running a metabolism that is hungrier and cheaper to run than the dog beside it in the park eating the same amount. That difference lands, eventually, on cartilage.

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What this breed actually gets, ranked by how likely it is#

Osteoarthritis, and it is not close. In a study comparing 1,462 Labradors against 20,786 other dogs under UK primary veterinary care, osteoarthritis was the breed's strongest specific predisposition of 35 disorders examined: odds ratio 2.83 (95% CI 2.21–3.62, p < 0.001). "Stiffness" appeared separately at 2.08 (95% CI 1.30–3.35).^[4] Put a denominator under that: in a VetCompass study of 455,557 dogs, the one-year prevalence of appendicular osteoarthritis across all dogs was 2.5%, while among 33,321 Labradors it was 6.1% (95% CI 5.88–6.39), an adjusted odds ratio of 2.56 against crossbreeds.^[5]

Elbows — the one owners underestimate. In a study of 455,069 dogs under UK primary care, elbow joint disease had a one-year prevalence of 0.56% across all dogs; Labradors carried a final multivariable odds ratio of 5.94 (95% CI 4.65–7.60, p < 0.001), the sort of number that puts a breed in a category of its own. Of 616 incident cases in that study, 76% carried an osteoarthritis diagnosis and 31% an elbow dysplasia diagnosis.^[6] Screening data agrees: of 13,057 Labradors screened in the Swedish Kennel Club scheme between 2007 and 2016, 9.0% were graded ED 1–3 — 5.4% grade 1, 2.0% grade 2, 1.5% grade 3.^[7] Dutch data on 2,693 screened Labradors put the incidence of fragmented coronoid process at 6%, with a heritability of 0.17, and found male Labradors affected by osteoarthritis 1.7 times as often as females.^[8] The American College of Veterinary Surgeons notes elbow dysplasia affects both elbows in up to 80% of patients — which is why a Labrador with elbow disease often does not limp in the way owners expect. Two sore elbows produce a shortened, careful gait, not a lopsided one.^[9]

Hips. In the same Swedish scheme, of 13,125 Labradors screened, 16.2% were graded C–E, the dysplastic range on the FCI scale; 62.7% graded A and 21.1% graded B.^[7] The mechanics of the disease itself, and what to do once a dog has it, are in our hip dysplasia guide.

Cruciate disease — and here is a number we could not verify. Labrador owners are routinely told the breed is among the highest-risk for cranial cruciate ligament rupture, and clinically that matches what surgeons see. But we went looking for a published, Labrador-specific prevalence or odds ratio and could not confirm one from a source we could read. The most-cited paper, covering 1,243,681 dogs in the Veterinary Medical Database between 1964 and 2003, reports only that large and giant breeds were more likely to be affected; its breed-level figures sit in full text we could not obtain.^[10] So we are not going to print a percentage. What that paper does report, and what is worth knowing, is below under neutering. If your Labrador goes suddenly and severely lame on a hind leg after normal play, cruciate is the first thing to rule out and it is a same-week vet visit — our TPLO recovery guide covers what follows if it is confirmed.

Why any of this matters more than a joint diagnosis normally would. In the VetCompass study of Labradors under primary care, median longevity was 12.0 years, and among the 147 dogs with a recorded cause of death, musculoskeletal disorder was the most common at 24.5% — ahead of neoplasia at 21.1%.^[1] Read that carefully, because it is the single most important sentence on this page. In this breed, the legs are the most common recorded reason the life ends. Not a tumour. The legs.

When it shows up#

The two age figures in that table come from the Purina lifetime study and its follow-ups, which are the subject of the section below.^[11][12]

The earliest sign, in a Labrador specifically#

Generic advice tells you to watch for limping. In this breed that advice will cost you two years.

A Labrador with sore elbows will still bring the ball back. He will still get in the car, still swim, still meet you at the door. The breed's whole temperament is organised around doing the thing regardless, and when both elbows hurt equally — which, as above, is up to 80% of cases — there is no asymmetry for you to see. Nothing looks wrong because nothing is lopsided.

So do not watch the performance. Watch what it costs him.

• The morning after. Stiffness on the day following a big day is the most reliable early signal in this breed. Not stiffness during.
• The first ten minutes. A shortened, choppy stride at the trot that loosens as he warms up. Owners describe this as "he just needs to get going," which is an accurate description of joint disease.
• The sit. Sitting down partway through a walk, or dropping into a sit rather than lowering into one.
• The pause before the jump. Half a second of hesitation at the tailgate or the sofa, months before any refusal.
• Elbows out at rest. Standing with the elbows rotated slightly outward and the paws turned in, to shift load off the inside of the joint.

And the one that is specific to this breed and nothing else: weight camouflages every item on that list. A heavy Labrador moves stiffly, sits early and tires fast, and every one of those signs gets filed under "he's carrying a bit too much" — while the extra weight itself gets filed under "he's a Lab." Two true observations, stacked, that between them can hide a diagnosable elbow for a year.

“Because your dog can't tell you how much pain he or she is in.”

If you want the general version of this, how to tell if your dog is in pain covers the quiet tells across all breeds, and limping versus weakness covers the distinction that decides which specialist you need. Thigh muscle is the other measurable record — muscle wasting in one back leg has the home protocol.

Screening, and what the numbers actually mean#

The Labrador is among the most heavily radiographed breeds in history. In an analysis of the complete OFA database from 1970 to 2015, Labradors accounted for 234,382 hip evaluations and 72,126 elbow evaluations across a dataset of 1,056,852 hip and 275,129 elbow records.^[13] On most breed pages we have to write that the evidence base is thin. Here it is the opposite, and it is the reason this page can be as specific as it is.

We are not reproducing OFA's statistics — their tables are theirs, and the current Labrador figures are published and maintained at ofa.org. Go and read them there. In writing this page we could not get OFA's live statistics pages to load, which is exactly why the Swedish and UK numbers above are the ones we quoted: we could read them.

The elbow grades are worth understanding because they are measured in millimetres of new bone, not in how the dog looks. Grade 1 is osteophytes under 2 mm; grade 2 is 2–5 mm; grade 3 is over 5 mm or an evident primary lesion.^[14] A grade 1 elbow is a real finding on a dog who has never limped.

Two things a certificate does not tell you, both of which are Labrador-specific findings.

A clean hip film at two years is not a clean life. The 48-dog lifetime cohort was followed with radiographs from puppyhood to death. Of the Labradors scored normal by OFA criteria at 2 years, 55% were radiographically dysplastic by the end of life, and 92% of those normal-at-two dogs had histopathologic evidence of osteoarthritis at post-mortem.^[15] That is the single most useful thing a Labrador buyer can know about paperwork. The hip-extended view at two years is a screen, not a verdict.

Screening statistics are not population statistics. The Swedish authors say so themselves: severe cases may be under-represented because dogs showing clinical signs young may never be presented for screening at all.^[7] Every voluntary scheme has this problem, in the same direction. The true numbers are worse than the published ones.

For what to do with the paperwork when buying: the heritability of these traits in UK Labradors has been estimated at 0.35 ± 0.02 for hip score and 0.19 ± 0.04 for elbow score, with a genetic correlation between the two of 0.41 ± 0.09, from 25,243 hip and 3,613 elbow scores.^[16] In plain terms: hips respond to selective breeding meaningfully; elbows respond less; and good hips are only weakly predictive of good elbows. Ask for both sets of paperwork, on both parents. One is not a proxy for the other.

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What actually helps#

Lean body condition, and the study everyone half-remembers#

The Purina lifetime study is the strongest evidence in veterinary medicine that feeding amount is an orthopedic intervention, and it deserves to be reported properly rather than as a slogan.

Forty-eight Labradors from seven litters were paired at six weeks by sex and body weight. From eight weeks, one dog in each pair was fed ad libitum and the other was fed 75% of what its pair-mate had eaten the previous day. That continued for life.

• Hips at two years. Using the OFA method, 7 of 24 restricted dogs versus 16 of 24 ad libitum dogs were diagnosed as dysplastic; using the Swedish method, 5 of 24 versus 18 of 24.^[17]
• Hip arthritis at eight years. Radiographic hip lesions in 3 of 21 restricted dogs versus 15 of 22 control-fed dogs.^[18]
• Onset of hip arthritis. Median age at first radiographic evidence: 6 years in the control-fed group, 12 years in the restricted group.^[11]
• Clinical arthritis. Mean age to which 50% of dogs survived without requiring long-term treatment for osteoarthritis: 10.3 years control-fed, 13.3 restricted.^[12]
• Lifespan. Median 11.2 years control-fed versus 13.0 restricted, a difference of 1.8 years, p < 0.01.^[12]

Now the four caveats, because this study is misquoted constantly and the misquotes are all in the flattering direction.

The heavy dogs were not fat. At 3.25 years the ad libitum group's food was capped and held constant, specifically to prevent them becoming obese; the paper calls them the "controlled-feeding" group from that point. Their mean body condition score between 6 and 12 years was 6.7 on a 9-point scale, against 4.6 for the restricted group.^[12] Six point seven out of nine is the shape most people would call a normal, healthy Labrador. That shape — not obesity, that shape — is what cost 1.8 years and six years of hip comfort. This is the sentence to take away from the page.

Maximum lifespan did not differ significantly. 12.9 versus 14.0 years, not significant. The gain was in the median, and in the years before decline, not in a new ceiling.

It did not prevent arthritis. Of the 48 dogs, 43 developed radiographic osteoarthritis, including 16 restricted-fed dogs who eventually needed treatment. Restriction delayed and reduced. It did not exempt.

And it did nothing measurable for elbows. This one matters more here than anywhere, because the elbow is this breed's biggest structural predisposition. In the elbow-specific analysis of the same cohort there was no statistical difference in radiographic osteoarthritis frequency between the groups at any time point, no difference in histopathologic prevalence or severity, and no difference in gross lesions. Only severity at six years reached significance.^[19] Anyone who tells you leanness protects a Labrador's elbows is going beyond the only lifetime study that looked.

And one more piece of honesty about what this means for your dog, who is not a colony Labrador restricted from eight weeks. In 50,787 neutered client-owned dogs across around 900 US practices, overweight body condition was associated with shorter life in all twelve breeds studied — but the Labrador-specific gap was among the smallest: median lifespan 13.3 years for normal-condition males against 12.7 overweight, and 13.6 against 13.0 for females.^[20] Roughly seven months, not two years. Both numbers are true; they measure different interventions. Lifetime leanness from puppyhood is the 1.8-year one. Getting weight off a middle-aged dog is the seven-month one — which is still seven months, still free, and still more than any product on this website will ever give you.

The neuter-timing question, stated with its limits#

Two findings, and they need separating.

Across the 1.2-million-dog database above, castrated males had an odds ratio of 1.68 and spayed females 2.35 for cranial cruciate ligament deficiency, and castrated males 1.21 for hip dysplasia.^[10] That is neuter status, not timing.

For timing, the Labrador-specific numbers come from 1,933 Labradors in the UC Davis teaching hospital records. One or more joint disorders — hip dysplasia, cruciate rupture and elbow dysplasia combined — occurred in 6% of intact males and 6% of intact females. In males neutered before six months it rose to 13%; in females spayed before twelve months, 11–12%. Beyond those windows the authors found no significant elevation, and their guideline for this breed is to neuter males beyond six months and delay spaying females beyond a year.^[21]

The limit on that: it is a referral and primary-care teaching hospital population, not a general one, so the absolute percentages should not be read as your dog's risk. The comparison between groups is the useful part. Our debate guide on when to spay or neuter works through the whole tradeoff, including the risks that run the other way.

Load, surface and the retrieve#

The exercise argument for a stiff Labrador — consistency over intensity, swimming, and the hard conversation about the ball launcher — is covered in full in arthritis in Labradors, and the dose question in how much walking an arthritic dog should do. The one thing worth adding here, specific to elbows: fetch on hard ground is a series of maximum-effort braking impacts through the front legs. In a breed with roughly six times the odds of elbow disease, that is the exact joint taking the exact load, in the activity the dog loves most and will not self-limit. You do not have to ban it. Roll it instead of launching it, and count the throws.

What to buy: mostly nothing#

This is one of the breed pages where the honest answer is that the interventions that matter are free.

A kitchen scale for the food, treats counted inside the daily ration rather than on top of it, and a weigh-in at the vet every three months are the whole first tier, and they beat anything sold in a bottle. Rubber-backed runners on the routes your dog actually walks solve most of the traction problem for a fraction of what gear costs — floor traction fixes has the room-by-room version.

Where a Labrador does eventually earn a purchase, it is a supportive bed, because a 33 kg dog with sore elbows spends a great deal of the day lying on them and hard floors load the point of the elbow directly. Our orthopedic bed roundup covers the field including the budget end. Supplements come after all of that, not before, and the evidence tiers are in our joint supplement guide. We are not carding a product on this page, because for the dog this page is about, the highest-value thing you can do this month costs nothing.

One more finding, because it keeps coming up#

Chocolate Labradors. In the same UK primary-care study, median longevity was 10.7 years for chocolate dogs against 12.1 years for non-chocolate (p = 0.028).^[1] It is a real, published, peer-reviewed result and it made headlines everywhere.

It also rests on 34 chocolate dogs against 139 non-chocolate ones, at p = 0.028. That is a small, borderline finding, and the reported differences were in skin and ear disease rather than joints. We mention it because you will meet it, and because a result reported honestly at its true weight is more useful than the version in the headline. Do not choose or worry about a Labrador on the strength of it.

Where to go next#

• The arthritis playbook for this breed, including exercise and supplements: arthritis in Labradors
• What arthritis is and every treatment tier: arthritis in dogs
• If hips are the diagnosis: hip dysplasia in dogs
• If surgery is on the table: TPLO recovery, FHO recovery, and what to ask an orthopedic surgeon
• Reading the early signs: is my dog in pain, limping versus weakness, muscle wasting in one back leg
• The later years: weak back legs in senior dogs, lift harnesses

What to do this week#

Weigh him, and write the number down with the date. Then run your flat hands down his ribcage: if you have to press to find ribs, the single most evidence-backed intervention available to you is already overdue, and it is free.

If he is under two, book the screening conversation now rather than at the first limp — PennHIP from sixteen weeks if you want an early answer, or hips and elbows together at twelve to twenty-four months. Ask for elbows specifically. In this breed they are the joint most likely to be skipped and the joint most likely to be wrong.

And if he is middle-aged and you have been reading his stiffness as weight, or his weight as breed, take him in and ask for front-leg radiographs. The delay between the first shortened stride and the first appointment is the part of this disease you still control. Everything else on this page was decided by a gene, a growth plate, and seven litters of Labradors who taught us what a smaller bowl is worth.

Sources#

1. McGreevy PD, Wilson BJ, Mansfield CS, Brodbelt DC, Church DB, Dhand N, Soares Magalhães RJ, O'Neill DG. "Labrador retrievers under primary veterinary care in the UK: demography, mortality and disorders." Canine Genetics and Epidemiology. 2018;5:8. doi:10.1186/s40575-018-0064-x — 33,320 Labradors; random sample of 2,074 for disorder data. Otitis externa 10.4%, overweight/obesity 8.8%, degenerative joint disease 5.5%, lameness 4.4%. Median longevity 12.0 years. Of 147 deaths with recorded cause, musculoskeletal disorder 24.5%, neoplasia 21.1%. Mean adult bodyweight 33.0 kg. Chocolate 10.7 years versus non-chocolate 12.1 years (n = 34 and 139, p = 0.028).
2. Raffan E, Dennis RJ, O'Donovan CJ, et al. "A Deletion in the Canine POMC Gene Is Associated with Weight and Appetite in Obesity-Prone Labrador Retriever Dogs." Cell Metabolism. 2016;23(5):893-900. doi:10.1016/j.cmet.2016.04.012 — 14 bp deletion disrupting β-MSH and β-endorphin; of 383 UK Labradors, 78% wild-type, 20% heterozygous, 2% homozygous (allele frequency 12%); 1.90 kg per deletion allele; food motivation +9.9% per allele; allele frequency 45% in assistance-dog breeding stock; found among other breeds only in the flat-coated retriever.
3. Dittmann MT, Lakatos G, Wainwright JF, Mokrosinski J, Cross E, Farooqi IS, Wallis NJ, Halsey LG, Wilson R, O'Rahilly S, Yeo GSH, Raffan E. "Low resting metabolic rate and increased hunger due to β-MSH and β-endorphin deletion in a canine model." Science Advances. 2024;10(10):eadj3823. doi:10.1126/sciadv.adj3823 — resting energy expenditure approximately 25% lower at adult weight in affected dogs; increased motivational salience to a food cue; no difference in satiety at a modified ad libitum meal and no disruption of ACTH or thyroid axes. Energy expenditure measured in 9 wild-type and 10 homozygous flat-coated retrievers; feeding trial in 14 wild-type and 10 heterozygous Labradors.
4. Pegram C, Woolley C, Brodbelt DC, Church DB, O'Neill DG. "Disorder predispositions and protections of Labrador Retrievers in the UK." Scientific Reports. 2021;11:13988. doi:10.1038/s41598-021-93379-2 — 1,462 Labradors versus 20,786 non-Labradors, 2016 data; increased odds for 12 of 35 disorders, highest osteoarthritis OR 2.83 (95% CI 2.21–3.62, p < 0.001); stiffness OR 2.08 (95% CI 1.30–3.35); reduced odds for 7 of 35, lowest patellar luxation OR 0.18.
5. Anderson KL, O'Neill DG, Brodbelt DC, et al. "Prevalence, duration and risk factors for appendicular osteoarthritis in a UK dog population under primary veterinary care." Scientific Reports. 2018;8:5641. doi:10.1038/s41598-018-23940-z — 455,557 dogs; overall annual period prevalence 2.5% (95% CI 2.4–2.5); Labrador Retriever 6.1% (95% CI 5.88–6.39) of 33,321 dogs; multivariable OR 2.56 (95% CI 2.31–2.82) versus crossbreeds.
6. O'Neill DG, Brodbelt DC, Hodge R, Church DB, Meeson RL. "Epidemiology and clinical management of elbow joint disease in dogs under primary veterinary care in the UK." Canine Medicine and Genetics. 2020;7:1. doi:10.1186/s40575-020-0080-5 — 455,069 dogs; one-year period prevalence of elbow joint disease 0.56% (95% CI 0.53–0.60); Labrador Retriever final multivariable OR 5.94 (95% CI 4.65–7.60, p < 0.001); of 616 incident cases, osteoarthritis 76.0% and elbow dysplasia 30.8%.
7. Engdahl K, Malm Persson S, Andersson L, Ringmark S, Bjørnvad CR, Hedhammar Å, Höglund K. "Prevalence of hip and elbow dysplasia in young adult dogs in Sweden." Veterinary Record. 2026;198(12):e560-e573. doi:10.1002/vetr.70224 — Swedish Kennel Club screening 2007–2016, dogs 12–24 months; 114,568 dogs screened for hips and 78,504 for elbows overall. Labrador Retriever elbows: 13,057 screened, 9.0% ED 1–3 (5.4% / 2.0% / 1.5%). Labrador hips: 13,125 screened, A 62.7%, B 21.1%, C–E 16.2%. Authors note severe cases may be under-represented because affected young dogs may never be screened.
8. Lavrijsen IC, Heuven HC, Voorhout G, Meij BP, Theyse LF, Leegwater PA, Hazewinkel HA. "Phenotypic and genetic evaluation of elbow dysplasia in Dutch Labrador Retrievers, Golden Retrievers, and Bernese Mountain dogs." The Veterinary Journal. 2012;193(2):486-492. doi:10.1016/j.tvjl.2012.01.001 — 2,693 Labradors radiographed 2002–2009; fragmented coronoid process incidence 6%, heritability 0.17; male Labradors affected by osteoarthritis 1.7 times as often as females.
9. American College of Veterinary Surgeons. "Canine Elbow Dysplasia." acvs.org — elbow dysplasia comprises fragmented coronoid process, osteochondrosis, joint incongruity and cartilage anomaly, plus ununited anconeal process; "noted to affect both elbows in up to 80% of patients"; Labrador Retrievers listed among breeds with increased predilection for medial compartment disease.
10. Witsberger TH, Villamil JA, Schultz LG, Hahn AW, Cook JL. "Prevalence of and risk factors for hip dysplasia and cranial cruciate ligament deficiency in dogs." Journal of the American Veterinary Medical Association. 2008;232(12):1818-1824. doi:10.2460/javma.232.12.1818 — 1,243,681 dogs in the Veterinary Medical Database, 1964–2003. Castrated males OR 1.21 for hip dysplasia; castrated males OR 1.68 and spayed females OR 2.35 for cranial cruciate ligament deficiency. Breed-specific figures are in full text we could not access; we have therefore not quoted a Labrador-specific prevalence for cruciate disease anywhere on this page.
11. Smith GK, Paster ER, Powers MY, Lawler DF, Biery DN, Shofer FS, McKelvie PJ, Kealy RD. "Lifelong diet restriction and radiographic evidence of osteoarthritis of the hip joint in dogs." JAVMA. 2006;229(5):690-693. doi:10.2460/javma.229.5.690 — hip osteoarthritis prevalence rose from 15% at 2 years to 67% by 14 years across the cohort; median age at first radiographic evidence 6 years control-fed versus 12 years restricted-fed.
12. Kealy RD, Lawler DF, Ballam JM, Mantz SL, Biery DN, Greeley EH, Lust G, Segre M, Smith GK, Stowe HD. "Effects of diet restriction on life span and age-related changes in dogs." JAVMA. 2002;220(9):1315-1320. doi:10.2460/javma.2002.220.1315 — 48 Labradors from 7 litters, paired at 6 weeks, one of each pair fed 75% of its pair-mate's previous-day intake from 8 weeks. Median life span 11.2 years control-fed versus 13.0 restricted (p < 0.01); maximum life span 12.9 versus 14.0, not significantly different. Mean body condition score ages 6–12 years, 6.7 ± 0.19 versus 4.6 ± 0.19 on a 9-point scale. Osteoarthritis diagnosed radiographically in 43 dogs; mean age to which 50% survived without long-term osteoarthritis treatment 10.3 versus 13.3 years (p < 0.01). At 3.25 years the ad libitum group's intake was capped to prevent obesity.
13. Oberbauer AM, Keller GG, Famula TR. "Long-term genetic selection reduced prevalence of hip and elbow dysplasia in 60 dog breeds." PLoS ONE. 2017;12(2):e0172918. doi:10.1371/journal.pone.0172918 — OFA database 1970–2015; 1,056,852 hip and 275,129 elbow records; Labrador Retriever 234,382 hip and 72,126 elbow evaluations.
14. Orthopedic Foundation for Animals. "Elbow Dysplasia." ofa.org — three named etiologies (pathology of the medial coronoid process, osteochondritis of the medial humeral condyle, ununited anconeal process); grades I (<2 mm osteophyte), II (2–5 mm with subchondral bone change), III (>5 mm with well-developed degenerative joint disease). OFA's own Labrador statistics are published on their site; we have not reproduced them here.
15. Smith GK, Lawler DF, Biery DN, et al. "Chronology of hip dysplasia development in a cohort of 48 Labrador retrievers followed for life." Veterinary Surgery. 2012;41(1):20-33. doi:10.1111/j.1532-950X.2011.00935.x — 55% of dogs scored normal by OFA criteria at 2 years were radiographically dysplastic by end of life; 92% of dogs scored normal at 2 years had histopathologic osteoarthritis of canine hip dysplasia.
16. Woolliams JA, Lewis TW, Blott SC. "Canine hip and elbow dysplasia in UK Labrador retrievers." The Veterinary Journal. 2011;189(2):169-176. doi:10.1016/j.tvjl.2011.06.015 — 25,243 hip scores and 3,613 elbow scores; heritability 0.35 ± 0.02 for hip score (log scale) and 0.19 ± 0.04 for elbow score; genetic correlation between hips and elbows 0.41 ± 0.09.
17. Kealy RD, Olsson SE, Monti KL, Lawler DF, Biery DN, Helms RW, Lust G, Smith GK. "Effects of limited food consumption on the incidence of hip dysplasia in growing dogs." JAVMA. 1992;201(6):857-863. doi:10.2460/javma.1992.201.06.857 — 48 Labradors, 25% less food to 2 years; OFA method 7 of 24 limit-fed versus 16 of 24 ad libitum diagnosed dysplastic; Swedish method 5 of 24 versus 18 of 24; both differences significant.
18. Kealy RD, Lawler DF, Ballam JM, Lust G, Biery DN, Smith GK, Mantz SL. "Evaluation of the effect of limited food consumption on radiographic evidence of osteoarthritis in dogs." JAVMA. 2000;217(11):1678-1680. doi:10.2460/javma.2000.217.1678 — hip, shoulder, elbow and stifle radiographed at 8 years; hip lesions 15 of 22 control-fed versus 3 of 21 limit-fed; shoulder lesions 19 of 22 versus 12 of 21 and generally mild; elbow differed in severity but not prevalence.
19. Huck JL, Biery DN, Lawler DF, Gregor TP, Runge JJ, Evans RH, Kealy RD, Smith GK. "A longitudinal study of the influence of lifetime food restriction on development of osteoarthritis in the canine elbow." Veterinary Surgery. 2009;38(2):192-198. doi:10.1111/j.1532-950X.2008.00487.x — no statistical difference in radiographic osteoarthritis frequency between feeding groups at any time point; no difference in histopathologic prevalence or severity; no difference in gross lesions; severity greater in control-fed dogs at 6 years only. Fragmented medial coronoid process, ununited anconeal process and osteochondrosis were absent in every elbow in this cohort.
20. Salt C, Morris PJ, Wilson D, Lund EM, German AJ. "Association between life span and body condition in neutered client-owned dogs." Journal of Veterinary Internal Medicine. 2019;33(1):89-99. doi:10.1111/jvim.15367 — 50,787 dogs from around 900 US veterinary hospitals; hazard ratios for overweight condition ranged from 1.35 (German Shepherd) to 2.86 (Yorkshire Terrier); Labrador Retriever median life span 13.3 years normal versus 12.7 overweight in males, 13.6 versus 13.0 in females.
21. Hart BL, Hart LA, Thigpen AP, Willits NH. "Assisting Decision-Making on Age of Neutering for 35 Breeds of Dogs: Associated Joint Disorders, Cancers, and Urinary Incontinence." Frontiers in Veterinary Science. 2020;7:388. doi:10.3389/fvets.2020.00388 — 1,933 Labradors from UC Davis Veterinary Medical Teaching Hospital records; one or more joint disorders (hip dysplasia, cruciate rupture, elbow dysplasia) in 6% of intact males and 6% of intact females, rising to 13% in males neutered before 6 months and 11–12% in females spayed before 12 months; authors' guideline is to neuter males beyond 6 months and delay spaying females beyond a year. A teaching-hospital population, so absolute percentages are not general-population risk.

This article is educational and does not replace veterinary advice. Screening grades, neutering timing and pain management are decisions to make with your own vet, with your dog's radiographs on the screen. The breed illustration on this page is a generated likeness, not a photograph of a specific dog, and is not evidence about size or conformation.