| abstract |
The invention relates to a medical implanted porous metal rod for treating early and middle femoral head necrosis, which comprises two parts, wherein one part is a round rod-shaped part, the other part connected with the round rod-shaped part is a threaded part, threads are arranged outside the threaded part, the outer diameter of the threads is larger than that of the round rod-shaped part, a notch is formed in the end surface of the threaded part, one section of the outer diameter of the threaded part, which is close to the round rod-shaped part, is gradually reduced towards the round rod-shaped part, the stress at the junction of the threaded part and the round rod-shaped part is reduced, the porous metal rod is favorably prevented from being broken and losing. |