Hip Replacement

From what I have experienced, others have posted, and reviewing approximately 100 orthopedics journal articles:
1. Hip replacement surgery is usually painful from day 2 to about 6 weeks, with pain the first week most difficult. Every patient and every hour of every day varies, from zero to 10 pain. For me, I had nerve block, so no pain for 72 hours.
After three days, pain of 6 or 7 at night; I didn't use opioids (tramadol, oxycodone, hydrocodone,etc), but did have regular scheduled acetaminophen, celecoxib, low dose prednisone. Pregabalin was an option but I didn't use, after conferring with the surgeon. After week 1, very little pain.
2. Most, but not all, surgeries provide pain improvement. Regardless of approach (anterior, posterior, "Super",robot, etc), or surgical experience, serious complications in the first year are about 1 to 2%, and your surgeon will have you sign a consent that discusses the complications (pain, bleeding, stroke, nerve damage, fracture, death, etc.). Complications continue after the first year, although I believe at least one person on Mayo Connect mentioned hip replacement went well and lasted over 30 years, for them. Some surgery results are poor, and revision is done, in other words re-do of surgery, and the success rate of revision is lower than first surgery, so that is another topic.
3. Be sure to consider conservative treatment, before hip replacement. Suggest to search on terms such as hip pain treatment and Mayo Clinic and also JAMA. If I had it to do again I would have tried celecoxib for a few days a week, once or twice a month, for at least 6 months, before moving to hip replacement. I noticed the 6 weeks of scheduled celecoxib after my hip replacement seemed to eliminate occasional aches in the low back and other hip! Celecoxib and other NSAIDS have risks of course, so they are usuallynotrecommended for continuous long term use.

Best wishes in your decision