My two year old german shepherd is going to have surgery for this as well. She was diagnosed with elbow displasia. As elbow displasia consists of three different conditions, your friend's lab may possibly have the same thing. There is OCD, UAP and FCP and usually arthritis is present as well. My dog has a bone chip (FCP) in each elbow which we're going to remove and she may also have OCD which they'll repair while they're in there. We've opted to have anthroscopic surgery at a local veterinary university as I've read that the results are more favourable when done this way and the recovery is much easier on the pupper. Meanwhile we have her on a complex of glucosamine, condroitin & MSM; omega 3 and ester-C. I'll be keeping her on these supplements even after the surgery because surgery doesn't cure the condition, it only cleans up the elbows. The surgery is going to cost us between 2200.00 and 2500.00 (for both elbows), but if it helps her, it'll be money well spent.