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A boy, six years old. No syphilitic history or abnormality in family. Since birth, the forearms were fixed in extension and pronation. Radiographs taken two years ago show bilateral, anterior luxation of the radial head, elongation of the upper end of the radius, and no bone fusion. Owing to the permanent extension, the disability was great. About two years ago, Doctor LaFerté excised the upper end of the radius on each side, taking care not to disturb the insertion of the

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FIGURE III.-LEFT ELBOW, CASE I, SHOWING DISLOCATION ELONGATION, AND FUSION. PRONATED POSITION.

biceps. This was followed by manipulative mobilizations, which, however, were discontinued by the patient sooner than advised. The child also had double club-foot, which was operated on with good result. When the boy was seen by the author two years after the operation, the mother stated that the boy could now feed himself, and that the arms were improved, although the child still grasped objects with the thumb underneath. Passive flexion on both sides was found to reach to a right angle, and passive extension to within twenty degrees of straight; no power, however, on either side in flexion or extension.

The right elbow is permanently pronated, and the left is in ninety degrees of pronation and allows a few degrees of rotary motion. Radiographs show what appears to be a partial regeneration of the heads of the radii in the anterior position.

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FIGURE IV.-LEFT ELBOW OF NORMAL GIRL, SAME AGE. SAME POSITION AS IN

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