Oh Sue, I am so upset for you. How difficult it is to read about our Darling Killi and now Sweet Shiloh. I know that I panic if Klo doesn't poop for a day, so I can't imagine how sad and frustrated you are with both your beloveds having problems.
My dearest Cody had MHD for as long as I can remember. When his episodes were mild, with slight limping, I gave him 2 Ascripin (aspirin with Maalox). Because of his size, he tolerated 2 just fine and it helped enormously. At times, esp. when he got older, I did use prescribed anti-inflammatory meds (Gawd, the name just flew off my tongue but I'll bet so many PTers know what it is) for 14 days and it did the trick.
Hip replaceement was never mentioned to me, so I assume that, even with his arthritis, it was at an acceptable level. The swweetie never complained and just relaxed more on his own when needed. He seemed to know his limits (through my tears).
Please email or PM me..I think a back issue of Dog Fancy had an entire article about Hip replacement. I'll be more than happy to try to get you a copy, or I probably still have it, as I keep the issues for a year.
I love you, dear friend, and I wish I could come over and just hug you.