Thank you.

Carpal valgus in an 8 week old Boxer puppy may have several causes, including contraction of the tendons which does not allow the straightening of the joints (this is the most common reason). Almost all Boxer puppies with carpal valgus recover on their own and do not require any sort of therapy, including braces. In fact, braces can sometimes make things worse because they restrict the normal motion of the joint and could lead to different problems. The growth plates of an 8 week old puppy (places where the bones lengthen) are still open so the bones are still growing and it will take some time for the joints to straighten. They may never be 100% straight, but they should improve significantly.

The problem comes in when there is a nutritional deficiency or when the growth plates close (when the dog is older); at that point, if the carpal valgus causes problems walking, surgery is needed, but at this time, things will likely improve very much on their own.

Your vet, of course, is the best judge because he/she has actually examined your pup, but as a general comment, I'd avoid the brace and just let the bones/joints develop and grow up for a little while and chance are, they will straighten...

Hope this helps; please let me know if you have any other questions or need more information!