(a) Little finger 3 months after injury. (b) The right vascularized 2nd metacarpal bone was harvested on the 5th metacalpal bone for use as a proximal phalanx. (c) Amputated little finger with SCIP flap inset on the 2nd metacarpal bone. (d) Ectopic chimera transplantation. Nd indicates distal end of the 5th digital nerve; Np, proximal end of the 5th digital nerve; Nv, vascularized LFCN; Va, SCIA /SCIV; Vb, SIEA/SIEV; Vc, 5th common digital artery; Vd, subdermal vein.