started 1.5 yrs ago with bilateral knee weakness and i've been to the doc many times and he said Im young and just exercise. It progressed to the point that i needed to wear knee supports to walk or else ill be too weak to walk. Knee pain thats sharp and feels like my bones are grinding when I walk. At times my calves would feel tingly or slightly numb. As this went on both my hip joints hurt like hell. Felt like the bones were grinding, and the muscles ached and felt weak and couldnt walk. the pain would shoot down the back or side of my thighs. I've seen a podiatrist for insoles, done bloodwork, MRI of my lumbar spine, xrays of my knee joints and hip joints. EVERYTHING is negative and ive seen a neurologist and a rheumatologist. Ive been going to a chiropractor and Physio (b/c mobility was limited) and I have been getting better ( i can walk without knee supports now), the pain is sometimes constant and sometimes intermittent, can be dull and sharp. WHAT is wrong with me. Im only 25.