I agree that people only seem to post the bad results. How often do you see a good restaurant review??? Always how bad the food or service was, right?? I had TKR of my left knee in early July and already walking often without a cane. The pre and post exercises you will do are VERY important to get the ROM of that knee working. My PT person is impressed that my ROM is already at 112 at just 4 weeks. Yes, there is discomfort, but nothing like some would have you believe. Stay positive and think of why you are doing this in the first place. Ice and elevate, especially after exercise. Good luck and quit reading all the negative posts -- here and elsewhere.