Last joint to be involved in ankylosing spondylitis: (A) Sacroiliac joint, (B) Temporo mandibular joint, (C) Costoveebral joint, (D) Veebral aicular facet joint
Answer is B. Ankylosing spondylitisTypically a young man who presents with lower back pain and stiffness.HLA 27 association Clinical features Stiffness is usually worse in the morning and improves with activityEnthesopathy is characteristicApical fibrosisAnterior uveitisAoic regurgitation ~ Achilles tendinitisAV node blockAmyloidosisCauda equina syndromeX-rays features - Sacroiliitis, Subchondral erosions, Sclerosis, Squaring of lumbar veebrae, Bamboo spine appearance(Refer: Apley's System of Ohopedics and Fracture, 9th edition, pg no: 58-61)