title: The zig-zag deformity in the rheumatoid hand.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000150:complications*; D005260:Female; D005384:Finger Joint; D005385:Fingers / Q000503:physiopathology; D006227:Hand Deformities, Acquired / Q000209:etiology* / Q000503:physiopathology; D006801:Humans; D008022:Ligaments / Q000503:physiopathology; D008297:Male; D009132:Muscles / Q000033:anatomy & histology / Q000503:physiopathology; D013710:Tendons / Q000503:physiopathology; D014457:Ulna / Q000503:physiopathology