Mid-foot disassociation in rheumatoid arthritis.
The mid-foot is commonly involved in rheumatoid arthritis with subchondral sclerosis and erosions at the talonavicular joint. There may be a mid-foot disassociation whereby the hindfoot is usually subluxed. Occasionally the forefoot may be subluxed with mid-foot disassociation. In long-standing cases of rheumatoid arthritis there is a loss of the normal plantar arch.
D001172:Arthritis, Rheumatoid / Q000150:complications*; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging* / Q000209:etiology; D011859:Radiography; D012598:Sclerosis; D013640:Tarsal Joints / Q000473:pathology