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Department of Podiatry

Gout

Gout is a condition of hyperuricaemia which results in urate crystal deposition in and around joints with associated oedema and inflammation. It most commonly effects the foot, in particular the first metatarsophalangeal joint. Early radiographic signs are increased soft tissue density and volume with a resultant increase in joint space. Progression results in bony erosions which are rimmed by sclerotic bone. There is a classic C-shaped erosion known as the martel sign which has an overhanging edge. Eventually there is irregular joint space narrowing due to cartilage destruction and associated degenerative arthritis. In longstanding cases there may be tophi deposits (a caseous [cheese] like substance) leading to further erosion of bone.

Gout of the first metatarso-phalangeal joint presenting with the classic C-shaped 'rat bite' erosion of the head of the metatarsal.

Content Approved by: Head of Podiatry

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Last Updated: July 8th, 2003