FB has a total knee replacement site and, yes, the first two weeks post-op are decidedly gnarly. Everyone endures the pain differently. TKR is not a surgery for the faint of heart. Seriously, it IS an amputation of sorts. I thought I knew what to expect for the second knee procedure, but it turns out each knee was different. The body never fails to surprise.
I wouldn't have qualified for the PRP (and it was never offered, just steroid shots) as I was grinding bone on bone with zero cartilage left. Mobility was definitely limited, so the surgery and ensuing discomfort were worth it. The drugs and keeping an eye on the long-term -- it does feel like an endurance contest -- made things, uhm, tolerable? The pain, pharms and lack of sleep can turn anyone into a giant toddler. Gave me a definite uber-appreciation for Saint Husby.