Flowing wax appearance on anterior borders of veebrae is seen in-
Calcification of Anterior longitudinal ligament- DISH; Diffuse Idiopathic skeletal hyper osteosis Calcification of posterior longitudinal ligament -OPLL: Ossified posterior longitudinal ligament - JAPAN: Disease Ossification / calcification of interosseous membrane - FLUOROSIS
Ankylosing spondylitis
DISH
Psoriatic ahropathy
Rheumatoid ahritis
Musculoskeletal Radiology