Arthritis mutilans

Arthritis mutilans, is a rare arthropathy originally described as affecting the hands, feet, fingers, and/or toes, but refers in general to severe derangement of any joint. In the hands, it is also known as opera glass hand (la main en lorgnette), or chronic absorptive arthritis, first described in modern medical literature by Marie and Leri in 1913. Sometimes there is foot involvement in which toes shorten and on which painful calluses develop in a condition known as opera glass foot, or pied en lorgnette.