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Abstract. Ankylosing spondylitis (AS) is an inflammatory disorder that presents with arthritis of the axial skeleton, including sacroiliac joints. Vitamin D is a secosteroid hormone with a long-established role in calcium and phosphate homeostasis, and in the regulation of bone formation and resorption.bstract. Ankylosing spondylitis (AS) is an inflammatory disorder that presents with arthritis of the axial skeleton, including sacroiliac joints. Vitamin D is a secosteroid hormone with a long-established role in calcium and phosphate homeostasis, and in the regulation of bone formation and resorption.
There is no cure for ankylosing spondylitis, but treatments can lessen your symptoms and possibly slow progression of the disease. Symptoms Early signs and symptoms of ankylosing spondylitis might include pain and stiffness in your lower back and hips, especially in the morning and after periods of inactivity. Neck pain and fatigue also are common.