@ccchang I live n north central MN, (US) so had my surgery at Cuyuna Regional Medical Center in Crosby MN, about 25 mi from where I live. My surgeon was Dr James Stokman. He was great! Also Dr Evan Kelly was the gastro surgeon who did the abdomen work for the ALIF procedure, while Dr Stokman did the spine stuff. I am almost 73 yrs and in reasonably good shape, but NOT athletic. Daily exercise is basic household chores and gardening. I am not doing pickleball, backflips, bronco riding, running marathons, etc. I don't have pain except for the usual arthritis that comes with age. Best wishes to you for a good recovery!