TKR with correction of hyper extension

My surgeon (not at Mayo) did my TKR, found & corrected a hyper extension. This recovery has been slower with pain holding on longer than my regular TKR (done at Mayo). Bend reached 136 degrees, I can walk with no issues. The medial side was EXTREMELY sensitive to touch for 8 months and continues to be painful when bent beyond 90 degrees. Medial knee has occasional surges of sharp pain when extended, and random sensitivities and pain under/near medial and lower side of patella. How much of this may be considered "normal" for this type of correction vs TKR alone. I will reach 1 year mark in 60 days.