SURFACE ENDOPROTHESIS OF HIP JOINT WITH CELL STRUCTURE Russian patent published in 2023 - IPC A61F2/36 

FIELD: medicine.

SUBSTANCE: superficial hip joint endoprosthesis with a cellular structure contains a stem made in the form of an oblong body from titanium alloy powder using additive technology. The first, intraosseous part of the stem is intended for installation into the bone. The second part of the stem is made with a head and is designed to interact with the cup. The intraosseous part is made in the form of a straight elliptical cylinder with a flat end, designed to place the intraosseous part along the neck and up to the cortical layer of the proximal femur. The intraosseous part is equipped with longitudinal channels and transverse channels located in two transverse directions. The channels are hexagonal in shape. The longitudinal channels are open at the end and extend to the level of the head; the surface of the intraosseous part contains a bioactive hydroxyapatite coating.

EFFECT: invention provides an expansion of the arsenal of superficial hip joint endoprostheses and an increase in the “survival” period of the endoprosthesis by means of its complete integration into the bone and compliance of its architectonics with the architectonics of the bone.

5 cl, 1 ex, 5 dwg