Tian Heng, Center for Hand, Foot and Extremity Repair and Reconstruction Surgery, The Second Hospital of Jilin University, Jilin, China. Case 1: The thumb was dissected in the abdomen due to the extrusion injury of an object and underwent reimplantation, with good blood flow and finger survival after surgery. Case 2: The thumb was dissected in the middle part of the nail (area III) due to an object extrusion injury and underwent reimplantation, with good blood flow and finger survival after surgery.