title: Lengthening of the ulna in radial agenesis: a preliminary report.
abstract: 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.
mesh_terms: D001852:Bone Lengthening / Q000295:instrumentation / Q000379:methods*; D001858:Bone Nails; D002675:Child, Preschool; D006801:Humans; D010027:Osteotomy; D011183:Postoperative Complications; D011884:Radius / Q000002:abnormalities*; D014457:Ulna / Q000002:abnormalities / Q000601:surgery*