FIELD : medicine.SUBSTANCE : invention refers to medicine, namely to traumatology and orthopaedics. An implant for osteotomy is made of metal or alloy and has the shape of a prism with a base in the form of a rectangular triangle containing a long and short legs and a hypotenuse. Prism comprises a set of main channels creating porosity, wherein the channels are elongated along a direction orthogonal to the long leg and/or hypotenuse.EFFECT : invention provides improved survival rate and reduced elasticity modulus when eliminating the risk of possible destruction of the implant in the form of a prism with a base in the form of a right triangle having a long and short legs and a hypotenuse.5 cl, 6 dwg