Anti-dislocation bone cement lining

The utility model relates to an anti-dislocation bone cement lining which comprises a patch and a connecting screw, the patch is of a bionic semispherical structure with an outer convex surface and an inner concave surface, the convex surface of the patch is a bone contact surface similar to a tibia defect in shape, and the bone contact surface is provided with 2-3 pointed protrusions; the patch is further provided with a screw hole communicated with the outer convex surface and the inner concave surface, and a connecting screw is inserted from the inner concave surface and extends out of the outer convex surface. Threads on the connecting screw comprise a front thread and a rear thread, the thread pitch of the front thread is N, the thread pitch of the rear thread is M, and M is equal to 2N. The anti-dislocation bone cement lining can better adapt to a defect part, and is firm in fixation and stable for a long time and a short time. 本实用新型涉及一种防脱位骨水泥内衬，包括补块和连接螺钉，补块为具有外部凸形表面、内部凹形表面的仿生半球形结构，补块的凸形表面为与胫骨缺损形状相仿的骨接触