Docter , i am Nandini ,49 yrs .i have a polio leg , was given a muscle transplant 30 yrs ago , as my upper thigh muscles were dead , ten yrs ago i atarted having immense pain in my knee , was again operated and a leg supporting plate was fixed in my lower leg ..i have less pain but ..as my spine is a little thick because of a bad posture ..and as muscles have gone weak after surgeries ..is ther any suppport system which can help me walk ..any machine or the like..as i wud like to walk ..even if little ..so that i may live self dependent .. regards and thanx