I agree, it is most likely metabolic bone disease (MBD), which is caused by lack of calcium (supplements) and D3 (UV lighting). MBD is very serious and is often fatal. It causes brittle, fragile bones that can become deformed. In an advanced stage, the only thing to do is have the beardie humanely euthanized. Could you post a picture of your beardie?
First of all, I highly suggest you join the bd.org forum (www.beardeddragon.org/bjive). I am a member there and have gotten lots of help from very experianced and knowledgable beardie owners. Post a thread in the "Health" section.
To treat MBD, you need to fix the original problem; no calcium and D3. You said you "put up all the lighting and stuff", but we need to make sure you got the right stuff.
You need a UV light. The only UV light to trust is the ReptiSun: http://www.petmountain.com/product/r...-uvb-bulb.html
You will also need to supplement your dragon with calcium (preferably with D3) and Herptivite powders.
Calcium (phosphorous-free with D3): http://www.petmountain.com/product/r...itamin-d3.html
Herptivite (with beta carotine instead of vit A): http://www.petmountain.com/product/r...erptivite.html
Again, the only calcium and herptivite I trust is RepCal.
Beardie husbandry is quite complicated. If you have any other questions at all, please message me. Again, I strongly suggest you join beardeddragon.org. The people there are very helpful and friendly.