What is a chronic systemic inflammatory disease of the joints, mainly sacroiliac joint, 90 % genetic, results in chronic synovitis with cartilage destruction, produces bony ankylosis, and spinal immobility, xray findings often lead to what's known as a bamboo spine?
A. Rheumatoid arthritis
B. Tuberculous Osteomyelitis
C. Osteoarthritis
D. Ankylosing Spondylosis
Answer: D