FIELD: medicine.
SUBSTANCE: invention refers to medicine, namely traumatology and orthopaedics. An endoprosthesis comprises pivotally connected cotyloid prosthesis and prosthesis of a proximal end of femoral bone having a stem for intraosseous introduction, a neck and a spherical head. On an external surface of the head, there is a cylindrical section in the form of a flat. The cotyloid prosthesis has a spheroidal internal cavity of a depth exceeding a half-radius of the head with an input hole less than the head diameter and equal to its diameter within the cylindrical section to lock and key the head in the cotyloid prosthesis. The cylindrical section faces a junction of the head and the neck at an angle approximately 33-61° to its axis. The head diameter is 22-38 mm, while the neck diameter is 13-14 mm.
EFFECT: invention provides higher reliability and durability of endoprosthesis function after implantation.
1 ex, 1 dwg
