Abstract: In order to promote bone growth without damage of a growth plate to improve the stability of a procedure, provided is an implant device for promoting bone growth, the device including: a first implant bar implanted to penetrate a metaphysis corresponding to the inside of a growth plate of a long bone to be treated; a second implant bar implanted to penetrate an epiphysis of the outside of the growth plate; and a stimulation elongation means disposed close to the external surface of the long bone to be treated and installed under skin tissues surrounding the long bone to be treated, and being elongated between end portions of the implant bars to increase a gap between the implant bars to cause the growth plate to be extended.

Abstract: Provided is an intramedullary (IM) rod for bone fixation. The IM rod is configured to be placed in an intramedullary cavity of a center portion of a part of a fractured bone which is required to be fixed to another part of the fractured bone, and lengthily extends in a direction of the part of the fractured bone, wherein the IM rod includes a plurality of guide holes configured to guide fasteners which are inserted through the part of the fractured bone and fastened to the other part of the fractured bone, and the plurality of guide holes include a main hole and a pair of sub-holes provided at positions forming vertices of a triangle together with the main hole.