Dear Sir, i feel you are going in wrong direction, 2 years post surgery pain could not be due to lack of physio, all it would have done would have been a stiff knee. There is high possibility that either the fracture has not united yet, or the nail in the leg has got infected, first consult your doctor to rule out these two things, Next, note the range of movement of the knee and hip, if that it near normal, than you need no physio, but if you are suffering from something else than you will need surgical intervention, You need to get done 1 X Ray of the leg full length. 2 CBC, ESR, DLC , CRP. these can be done and you can revert back to me with the investigations and x rays, we can than discuss the prospects further. Thanks