Hi hacker0721,
I also have had lots of quadriceps-area, above-the-knee pain, too, as well as nerve pain down the TKR leg, along the femoral nerve area. For the nerve pain I was prescribed a muscle relaxer, which I took initially with OxyContin from weeks 2-8, and later with the Bonesmart-buddy recommended combo of Tramadol and Tylenol from the 8-10Th weeks. The above-knee twitchiness has mostly subsided and now I mainly just take Tylenol. It has seemed like many of us experience various nervy feelings, though, and it must be a common experience. The muscle relaxer I really only ever seemed to need at night, and not since about week 11 consistently. So, if it's any reassurance, in my case at least, those uncomfortable nervy-twitchy feelings disappeared relatively early on... hang in there, and know we'll all do our best to help1