Mael&;s sign is seen in which of the following condition

Mael&;s sign is seen in long standing cases of gouty ahritis * First acute attack: soft tissue swelling * Chronic tophaceous gout: Mael&;s sign --punched-out cystic erosions with overhanging bony edges, associated with soft tissue calcified masses. Refer Fundamentals of ohopedics by Nikil Mohindra p 354