I had knee pain in April 2011 & could not walk,Used walker. Then consultged , Orthopaedic Doctor , who injected 4 Hyalgan injections in my left knee each after a month and prescribed Tab. Megafreeflex,Althafla P, Tab Roles,Cap Primecal AT, Volika gel(Volini)P and adviksed regular Physo exercies.. With some change in medicines on my subsequent visits to the Doctor, I got great relief. But now for the last one month I got sever burning pains in both my knees.The Doctor on 10.8.12 injected Hylone Inj, Will it relieve me fully of my knee troubles & how long Hylone Inj will be effective.