Bone pain similar to that of arthritis may occur in the early course of the disease. Later, sharp pain may suddenly occur and become worse with activity or weight bearing. Fractures may occur, particularly in your spine, although you may not have fallen. These are called spontaneous fractures. These fractures compress the vertebrae in the spine and are the cause for loss of height. Fractures at other sites, especially the hips, wrists, or ribs, occur more easily from falling down.



