An 83-year-old female with a 14-year old right artificial femoral head replacement and a fracture of the distal femoral stalk after a minor trauma Preoperative X-ray front view Preoperative X-ray side view The prosthesis removed during surgery and the revised trial mold The allograft bone plate was used to compensate for the bone loss during surgery Postoperative X-ray front view Postoperative X-ray side view With the popularity of artificial joint replacement surgery and the extension of its use, there are more and more cases of periprosthetic fractures. The patient had chronic pain and claudication in the right hip before the fracture, and the preoperative X-ray showed a significant loosening and sinking of the femoral stalk and osteoporosis around the prosthesis, which is obviously related to the reduction of weight bearing in the right hip. Therefore, patients who have undergone artificial joint replacement surgery, even if they do not have obvious symptoms, should visit their surgeon regularly for follow-up examinations to detect problems early and treat them early, thus avoiding very large and complex revision surgeries in the future.