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Originally Posted by DENISE517  Ok...I didn't start this thread to start anything so please keep it as an information thread please......don't make it a controversal thing. 
here is what i found on a website?
What causes luxating patella?
Occasionally it's caused by an injury, but in the absence of such proof, the weak tendons and/or shallow kneecap groove of luxating patella is considered hereditary. Never breed a Yorkie with any degree of luxation (even a "wiggly" knee), whether it has been repaired or not. Fixing the knee doesn't fix the genes that caused the problem.
OFA Certification
The Orthopedic Foundation of America will issue registration numbers to dogs whose patellas have been x-rayed by a vet, forwarded to the OFA, and found to be normal. This condition is so common in Yorkies that we believe it is essential that all breeders start doing these x-rays before breeding. Then you will be able to INSIST on seeing the OFA certificate for each parent before buying a Yorkie puppy. It will be one more way to pick out the responsible breeders from the rest of the pack. |
Yup! That's exactly what I found 2.5 years ago when Roxy was first diagnosed with LP and her breeder gave me the song and dance of how none of her dogs have it or ever produced dogs with it.
But that's exactly what people need to know.
The reason why LP is genetic is b/c of the make up of their bone structures. The 'shallow groove' and if it is shallow enough, at some point, whether it be from a jump off the coach to just a simple walk around the block, that shallow groove COULD allow the patella to luxate.
Most patellas DO NOT luxate from birth (although in extreme cases it does), that's why people think 'it's not genetic'. But you have to make your self understand what LP is all about. In large breeds, there bone structure are very strong and they usually have very deep grooves that their patella rest in and stay there. When LP occurs in the large breeds it's b/c they took a pretty massive 'blow' to that area, literally blowing the knee cap right out of its resting place in that deep groove.
With the small breeds, most of them have the genetic makeup that gives them a 'shallow groove' (poor breeding) - so they can go through a lot or a little of there life with their patellas in place, but since their groove in shallow, one wrong move allows that patella to luxate.
I hope I am making sense