MONTAGE: JOINT: Course of Rheumatoid Arthritis, Clinical and radiographic progression -- MIDDLE STAGE, METACARPOPHALANGEAL JOINTS; left image-clinical; right image-radiograph -- CLINICAL-The collateral ligaments of the MCPs become stretched, and the volar fibro-cartilaginous plate to which they are attached, and on which the base of the proximal phalanx rests, drops pa (PLAIN FILM)