The present invention relates to an artificial knee joint comprising: a pair of thighbone components assembled in both side parts of a thighbone in a shape of accommodating the bottom front and rear sides of the thighbone, and fixed to the thighbone through a coupling screw a shinbone component having rolling surfaces formed to be dented in both top sides thereof to ensure a rolling contact, wherein the rolling surfaces support the bottoms of the thighbone components a cruciate ligament member fixed and formed in the top center of the shinbone component, and supporting the refraction of the thighbone components with respect to the shinbone component and a shinbone tray coupled with the bottom of the shinbone component, and fixed to the top of the proximal end of a shinbone. When the thighbone components divided into two parts and assembled into one part are respectively assembled and coupled with and fixed to both sides of a thighbone, cutting of a condylar side of a knee joint in the rear side of the thighbone can be minimized, and the features of a natural knee joint can be maximally maintained. Also, the thighbone components and the shinbone component can be smoothly bent by means of multiple rollers disposed to have parts exposed to the rolling surfaces of the shinbone component. When a re-operation is performed with respect to damage to a collateral ligament, a pre-operated product can be replaced by an artificial knee joint which is almost the same as the pre-operated product, and an artificially produced collateral ligament member is connected with the thighbone components and the shinbone component, so a collateral ligament function can be ensured.COPYRIGHT KIPO 2016본 발명은 인공 무릎관절에 관한 것으로서, 대퇴골의 하부측 전방과 후방을 수용하는 형태로 대퇴골의 양 측부에서 조합되고, 체결나사로서 대퇴골에 고정되는 한 쌍의 대퇴골 컴포넌트와 상기 대퇴골 컴포넌트의 하부가 받쳐지는 구름면이 상부 양측에 함몰지게 형성되어 구름 접촉되는 경골 컴포넌트와 상기 경골 컴포넌트의 상부 중앙에 고정 설치되어 경골 컴포넌트에 대해 대퇴골 컴포넌트의 굴절동작을 지지하는 십자인대부재와 상기 경골 컴포넌트의 하부와 결합되어 경골의 근위단 상부에 고정되는 경골 트레이로 구성된 것을 특징으로 하는바, 2개로 나
