I know several dogs that have had it. Diff ages. One had both torn and repaired and hasn't had a problem for last couple of years since the dog has been at home and not with pro anymore but still gets run everyday.
Kim Pfister, Rainmaker Labs
Of course there's a chance some of these injuries are not a result of genetic unsoundness....but I will not take a chance on having that particular unsoundness in my breeding program, because IMO saddling a puppy buyer with $7,000 or more of surgery/extensive rehab is much more burdensome than, for example, mild dysplasia. And a year (for 2 rehabs) is a lot of time to lose from a dog's already short working career.
Julie R., Hope Springs Farm
Chesapeake Bay Retrievers since 1981
No my female has not had Any issues not has she torn her cruciates. One Very nice stud I am thinking about has had his repaired. How many surgeries to creek robber have?
Did labs in the 40's-70's have reported rates as high as today's?
I don't know about those dogs, but it has gotten much worse since the mid 90's IMHO. It's still pretty much of an unknown as far as the cause. Look at the other 2 grants. Immune issues and inflammatory issues are also being studied. I only remember hearing of cruciates on older dogs, and it usually meant retirement. The younger age and the frequency is definitely higher than it was in the 80's. This is in the first listed grant " The exact disease process behind spontaneous rupture of the canine cranial cruciate ligament (CrCL) is not known. Though much research has focused on the structure and function of the ligamentous core of the CrCL, little has been dedicated to the thin layer of cells (synoviocytes) that envelop the CrCL. Similarly, there is little information on the potential role that these cells may have in the degeneration and rupture of the CrCL. " Since so many of our dogs are bred from just a few studs, even though the exact cause is unknown, it has escalated dramatically but it also seems dogs are being run earlier now. If it is indeed an immune plus inflammatory process, maybe there is an insect vector as a cause.
"We give dogs time we can spare, space we can spare and love we can spare. And in return, dogs give us their all. It's the best deal man has ever made." M.Facklam
Just got back from Michigan State University and my Nala has what was diagnosed as less than a Class I tear. It reads as: Under sedation, .25 out of 4 cranial drawer movement. Both knees were given that score, but only her right knee has expressed momentary (20-30 seconds), intermittant lameness.
Dr. Grethen Flo did the exam and her take on labs and CCL tears has much to do with conformation, especially in show labs as their conformation is different than working dogs were the limbs are concerned and that their knee angles (etc) are much worse than working labs'.
I mentioned Gibson's work but she was not aware of it.
So, I guess I'm gonna wait on surgery until the tear(s) gets "unmanagable".
HR Surrey's Space Dog Nala
The best long range duck load is a well trained retriever - Nash Buckingham