<unk>  is a rare medical condition involving severe inflammation damaging the joints of the hands and feet, and resulting in deformation and problems with moving the affected areas; it can also affect the spine. As an uncommon arthropathy,<unk>  was originally described as affecting the hands, feet, fingers, and/or toes, but can refer in general to severe derangement of any joint damaged by arthropathy. First described in modern medical literature by Marie and Leri in 1913, in the hands,<unk>  is also known as opera glass hand (la main en lorgnette in French), or chronic absorptive<unk> . 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.
Arthritis mutilans
Scrupulosity
Arthrofibrosis
Myositis ossificans
Hypertrophic osteoarthropathy
Discoid lupus erythematosus
Tuberculous dactylitis
Myospherulosis