Patent ID: 8435240

Claim:
A metal bone supporter for treating the femoral head necrosis comprising: a supporter component and a connector component having a common central axis (CL) when assembled together to compose a metal bone supporter body, wherein the supporter component is a cylinder that is made of titanium alloy powder, the supporter component has a rough outer surface having a porous structure, wherein a diameter of pores of the porous structure is 100-800 micrometers, and the porosity is 50-80%; wherein the connector component has a length (L), is solid from one longitudinal end to the opposite longitudinal end along the central axis (CL) thereof, and consists of three portions along the length (L) thereof, each of which has a different outer diameter, the three portions being: a first portion at the one longitudinal end of the connector component, the first portion having a continuous spiral-shaped cortical bone thread ( 1 bt ) having an outer diameter (DT) extending continuously along an entire length (La) of the first portion of the connector component; a second portion directly joined to the first portion, the second portion having a smooth, cylindrical-shaped outer surface with an outer diameter (DL) along an entire length (Lb) thereof, a third portion at the opposite longitudinal end of the connector component so as to be joinable with the supporter component, the third portion directly joined to the second portion and the third portion having an outer diameter (DS) along an entire length (Lc) thereof, an outer surface of the third portion having two sections: a first section directly joining the second portion, the outer surface of the first section having a smooth, cylindrical-shape, and a second section directly joining the first section, the outer surface of the second section including a small-diameter fixing thread ( 1 t ), the first and second sections of the third portion of the connector component being fitted into the supporter component in order to connect the supporter component to the connector component to compose the metal bone supporter body, wherein the diameter (DT), the diameter (DL) and the diameter (DS) have relationships of: DT>DL>DS, and La+Lb+Lc=L.