Poor puppy....I do hope you have contacted the breeder! He/she should bear some responsibility for these issues imho.
I suggest, if you are not seeing one now, that you seek the opinion of a board certified surgeon whose main interest is in orthopedics. You can find one at
www.acvs.org
I have seen many, many pups who were advised to have surgery by a general vet, go to a board certified vet only to find out that all that surgery was not necessary. Besides, it is always good to have second opinions!
My Adina has hip dysplasia .. she was diagnosed as an adult in 2012 when she started limping. Here is a thread about her :
http://www.yorkietalk.com/forums/sic...-tomorrow.html
The surgeon told me that unless hips are really bothering them, there is no need for surgical intervention. I opted for the one hip that was causing pain to be operated on. She has not had any problems with the other hip at all!!
As for the LP, I personally would probably repair both knees. I don't feel that way about adult yorkies, but puppies yes. The surgeon I go to said while it is not wrong to fix LP in adult dogs it is really not necessary unless they are causing major issues (which is rare...usually when there are issues it is due to other things going on in the knee such as a torn cruciate ligament). He said that IF they tear a ligament, then he will repair the ligament and the LP. We were just there the other day with a YHR foster pup and, once again, the surgeon told us that the risk of arthritis is really not that bad with LP. There IS however, severe arthritis in torn cruciate ligaments. He said that many vets say that if a dog's LP is not repaired it will lead to arthritis but he has not seen that. I might add that every one of my personal pups have LP and are adults, and not one has arthritis in his/her knee. The reason to repair LP in a puppy is to try to prevent the wear and tear on the cruciate ligament which leads to tears; BUT it is not always going to prevent a tear. A pup can tear a ligament without even having LP.
I wish you good luck...please keep us posted!