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Thumb hypoplasia represents a major disability requiring sophisticated reconstructive procedures. One of the basic criteria of the pollicization to construct a functional thumb is scar free web reconstruction. In this article, a technique to avoid excessive scarring in the first web space reconstruction by filleting out the hypoplasic thumb combining with a triangular flap is presented. A 5-year-old girl was presented. She had a Back-Gramcko type IV thumb hypoplasia. A triangular flap was planned on radial border of the long finger. Floating thumb was filleted out with preservation of the neurovascular bundle and transferred to the first web space while cooperating with triangular flap. Patient was followed up for 18 months. No early or late major complication was seen. Flap healed without any necrosis. The ratio of active motion in pollicized finger was measured 60% after cerebral reorientation. A satisfactory grip and pinch were seen in pollicized finger. Patient as well as her parents was satisfied with the results. Filleting out the floating thumb and combining with a triangular flap harvested by a V-Y flap design is a good option to avoid excessive scarring in reconstruction of the first web space in pollicization. It is strongly recommended that floating thumb should be preserved for future pollicization, and any attempt to amputate it in early years of life should be postponed till the time of definitive surgery.