Total hip replacement succeeds in the large majority of cases, returning near normal function, with a small but real rate of serious complications like luxation or infection. FHO reliably relieves pain with a functional, slightly imperfect gait, best in lighter dogs. Elbow arthroscopy helps selected elbows but does not erase the underlying arthritis.
Send what your vet said and quoted. A veterinary surgeon reads it and comes back to you with what they can do and what it would cost, before you pay anything. A written second opinion is from $250.
The recurring owner dilemma is a large young dog with bad hips and a budget that covers FHO but strains at THR. There is no universally right answer: an FHO now is real and affordable relief; saving toward THR keeps the ceiling higher; and waiting too long forecloses nothing for THR but costs comfortable years. This exact dilemma, with your dog's x-rays and your actual numbers, is among the most common cases we are asked to referee, and among the most useful.
Send the case, hear back from a surgeon with what they can do and what it costs, and only pay if you go ahead.
Conversion is technically possible but harder and less predictable than a first time THR; it is a bridge to plan with a specialist rather than an assumed safety net. If THR is the likely destination, getting there directly is better.
Some gait wobble early is normal; the panic signs are sudden non weight bearing, rotation, shortening or a clunk. Anything sudden goes to the surgical centre the same day; gradual and improving belongs on the recheck list.