In a middle aged male having back pain, syndesmophytes involving 4 continous veebrae are seen on Xray. The patient has ?
Ans. is 'b' i.e., Ankylosing spondylitis Back pain with syndesmatophytes in a middle aged man suggest the diagnosis of ankylosing spondylitis.
DISH
Ankylosing spondylitis
Rheumatoid ahritis
Osteoahritis