Sue is going to sing her same song 😉Go to Physical Therapy - not just post-surgery "do this exercise" therapy. Find a Rehabilitation PT clinic. Your orthopedic surgeon may know of one, or is you have a hospital that does a lot of trauma or orthopedic surgeries, they will know.

First, arthritis or other inflammatory flares are not uncommon as our bodies heal after the trauma of a surgery.
Second, a Rehab PT can evaluate your gait, posture, leg lengths, and a host of other issues and get you headed towards proper alignment. They can also work on strengthening both legs to correct imbalances. After my last hip revision (many years ago now) I felt just as you describe. The PT designed a routine of home/clinic/pool exercises to correct my gait (I had limped for over 10 years), my posture and my tendency to turn my right foot inward. This relieved hip, back and knee pain.
Is this something you can try? Even just a few visits can make a big difference. Be prepared to watch yourself walking in a mirror.

I had two PKR, left and then right, spaced 2 years apart. Mine worked well and I am glad I went that route, but then again I had all the criteria for the partials. After my most recent partial, I noticed that I was having pain in my shin, about halfway down my lower leg on the surgical leg. My PT explained how, in all likelihood, this is from my leg needing to adapt to the new alignment. The stress points have now changed as I was quite bow-legged from the medial side arthritis over the past 10 years. Sure enough, that shin pain has now waned and I am doing quite well. The only pain I really have now is muscular as I lift weights every other day. It bothers me that you say however, that your pain is coming from the joint. I wish you the best of luck and I would listen closely to both your PT and your surgeon. It does take a while for these newly repaired joints to "wear-in" at least it did for me, and I am 68 and active but probably should lose 30 pounds to help my body heal.