What Causes Pain After Knee Replacement Surgery?
Very good question!
Detailed Answer:
Pain gives it's etiology from location and quality.
see pretty picture... note L4-L5... the commonest location for LUMBAR DISK DISEASE.
http://www.drstevenjdolgoff.com/heel_and_arch_pain.html
Pulling the leg forward straight like yanking on a fishing rod will pull on a nerve going from the back down the leg. If this triggers the pain, then that is the cause and the operation is a coincidence.
But I doubt this is the case.
Location .. traveling in the path of a nerve... burning quality... would mean IT'S a Nerve. Occurring after a trauma AND a small distance means the pain is due to a local, small nerve that is irritated. AMITRiPTYLINE is likely the strongest nerve pain pill (and non-narcotic, generally safe and very inexpensive). It has action like lidocaine and you could instead use a lidocaine patch on the area of prev. surgery. Any other nerve pill (lyrica at > 100 mg; gabapentin, epilepsy meds) might also work.
Narcotics work on nerve pain (neuropathic) BUT they have to be given at such high doses, that this is why neuropathic pain pills were developed. ALso, local steroid+lidocaine injection into knee (cheap, safe) MIGHT work (but doubt it).
Then, there's ways of bearing it. Physical therapy, exercise, ballroom dance--all are essentially ACTIVE meditation techniques in a therapeutic context can help people increase tolerance of pain.