| abstract |
The present invention is configured to be fixed to the femur and sliding to cover the surface of the stem to integrate, thereby significantly reducing the shear stress harmful to the life of the artificial joint, significantly alleviating the stress blocking phenomenon, and inhibits the formation of gaps between the femur and the stem, thereby infiltrating foreign matter. It is an object of the present invention to provide a jacket for a cement-based artificial stem that minimizes the fusion of the femurs. The jacket 10 of the present invention corresponds to the stem 21 so as to cover most of the conventional articulated stem 21 used by being inserted into a hole dug in the longitudinal direction at the end of the femur 15 of the human body. It is formed into a shape, and is formed of a flexible and permanently usable material so as to extend and integrate when being coupled with the stem 21. In addition, the jacket 10 is made of cement, or a synthetic resin layer 12 having excellent wear resistance is formed on the inner surface of the jacket made of cement. In addition, the discharge path along the longitudinal direction of the jacket on the surface of the jacket 10 so that the cement pre-injected in the femur 15 can be easily discharged to the upper part when the jacket 10 is inserted so that it can be used during surgery. 13) is formed. |