Inappropriate intrinsic muscle action in the rheumatoid hand.
D000200:Action Potentials; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000503:physiopathology*; D004576:Electromyography; D005260:Female; D005385:Fingers / Q000503:physiopathology; D006227:Hand Deformities, Acquired / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D009132:Muscles / Q000503:physiopathology*; D009220:Myositis; D013035:Spasm