The treatment methods used for Blauth type IIIB hypoplastic thumbs are controversial. We performed a nonvascularized,\nhemilongitudinal metatarsal bone transfer on a 5-year-old boy with a type IIIB hypoplastic thumb. Despite the childâ??s age, the\ngrowth of the thumb was confirmed and the thumb had stabilized. Moreover, growth disorder of the donor toe was not\nobserved. This method is relatively easy to perform. And donor toe deformation can be prevented, because of the preservation of\nmore than half of the metatarsal bone. In our case, the patient was 5 years of age; nevertheless, the epiphyseal line was opened\nand the grafted metatarsal bone grew. This method is useful in terms of its simplicity and prevention of postoperative complications
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