A whole year on prednisone is a tough treatment.

Prednisone depletes many nutrients, and when those get low, a whole new
set of symptoms can result.

Many doctors are now testing people with chronic pain issues for serum Vit D.
I suggest you have this done ASAP.

These are the nutrients that prednisone negatively affects:

Calcium
Magnesium
Potassium
Selenium
Zinc
Folic acid
Vit C
Vit D

Low levels of selenium and zinc lead to poor thyroid hormone utilization.
These two minerals are involved in the conversion of T4 to T3 in the tissues.
I have a magnesium thread on our Vitamin forum here:
http://neurotalk.psychcentral.com/thread1138.html

When you get tested for Vit D levels, also request electrolytes (calcium, magnesium, potassium) and Vit B12. Any B12 reading below 500 should be
supplemented (American ranges are notoriously low for some reason).

The tradeoff with prednisone treatment is quite high. Many people develop osteoporosis as a result.
And if you take OTHER RX medications, you may be depleting EXTRA for certain things. For example ACE inhibitors for blood pressure, deplete zinc.

Once a person begins treatment for something, very often new things
develop as a result. Unfortunately doctors don't keep up with that information,
and the patient suffers.

If you were given Fosamax or Actonel or Boniva for osteoporosis prevention, this may be causing your PAIN.
There are studies to show that these drugs cause pain in some patients, and are not really good for
steroid induced osteoporosis.