Hi Babette, my surgery was in 10/18 and manual manipulation in 12/18. Stairs are difficult and goin down is much harder than going up, so I’m thinking it’s normal what your experiencing. Even while we are hiking terrain going up is easier than downhill. My mother has had both knees replaced 10 years ago + and she tells me what I’m experiencing, what your feeling is pretty normal. I am curious as to what your dr says in July and can’t wait to hear. I didn’t expect to be living like this at 55.