Femoral fracture enkawlna lama hmasawnna hi kum 1940 chho vela Kuntscher-a’n closed intramedullary nailing technique a rawn luh tirh atang khan a lo awm tawh a ni. Kum sawmhnih kalta chhung khan femoral fracture-a intramedullary nails (IMNs) hman hi enkawlna standard a lo ni ta a, tuna intramedullary nailing lama hmasawnna leh surgical technique lama hmasawnna chuan femur-a intramedullary nailing hman hi nasa takin a tipung thei a ni.