My mother's left knee feels like that knee is not proper able to carry weight of body even her weight is normal. She said its give few pain at the outer portion of knee of left side knee. This few pain just rise when she walking but not in siitting position or cross legs position. And she also said after long duration of sitting in cross legs position when she starts walking it feels like that bones are mesh with each other and give few pain. Plz doctor give me suggestions, exercise tips, food diet or any medical help. & also tell the reason behinde this problem of knee. Is this reason for any future problems of knee. Iam worried about this. Thanx...