Research Article| Volume 2, ISSUE 3, P175-178, May 1977

Lengthening of the ulna in radial agenesis: A preliminary report

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      In two patients with bilateral radial agenesis, the ulnas were divided and lengthened in a modified Abbott-Anderson device with a gear box controlled by an electric motor to obtain from one to 2 mm. per day of gradual distraction. Three centimeters of length was achieved in 3 weeks. Bone bridged the gap in 3 months and was mature in 6 months. Repeat osteotomy and lengthening was done 12 to 18 months later. All secondary lengthening operations required bone grafts. Total length gained ranged from 5.4 to 6.4 cm.
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