The problem of low precision of hand-implanted acetabular prosthesis, which has plagued many orthopaedic experts, is now easily solved by high-tech 3D printing + reconstruction technology. This "assisting artifact" looks like two horseshoe-shaped magnets. Stone, the scientific name is called "artificial acetabular cup implant guide." Before the total hip arthroplasty, the hip joint model was printed in a 1:1 ratio, and the appropriate iron strip guides were designed according to the model, all made by 3D printing. Rehabilitated acetabular prosthesis These two iron-shaped objects less than 10 cm in length represent the current leading level of 3D printing in orthopedic clinical medicine, and this idea has only experienced more than half a year from idea to success. “After hip replacement, there are many reasons for the revision of the prosthesis, but one of the important reasons is that the cup is not accurately installed during the replacement, resulting in wear or loss.†Zhou Guanming's model with hip joint in his hand And the acetabular prosthesis model is drawn. "For example, at this angle, tilt it, when the patient moves, it will move, and it will wear out slowly." Zhou Guanming explained that over the years, the position of the acetabulum in patients with total hip arthroplasty has been diseased or disabled. "In patients with lesions, the acetabulum may have been irregular, so the acetabular cup prosthesis should be accurately placed in the acetabulum, and the accuracy of manual implantation will be biased." Zhou Guanming said frankly, plus around the hip. Soft tissue (muscle and fat) blocks sight, and even an experienced orthopaedic surgeon cannot guarantee 100% accuracy when placed in an acetabular prosthesis. "Even if I have been engaged in artificial hip replacement for many years, I can't guarantee 100% accuracy." Once placed inaccurately, it will cause the acetabular prosthesis to wear or fall off, which will affect the patient's function. "It is necessary to carry out renovation." This problem has plagued many orthopaedic surgeons, including well-known orthopedic experts and Professor Liu Xiaoyi, dean of Foshan Traditional Chinese Medicine Hospital. For Foshan Traditional Chinese Medicine Hospital, the total hip arthroplasty has reached 2,000 units a year, and the number of operations is among the highest in the country. Looking for precision aids “There is no tool to assist the doctor in completing the operation, so that the angle of the acetabular cup prosthesis can be accurately adjusted to avoid the resulting renovation.†This is the subject that Liu Xiaofang has been thinking about. At present, the internationally recognized cupping prosthesis is placed at an angle of 40 +/- 10° and a anteversion angle of 15 +/- 5°. This is called the “Lew innek cup safe zoneâ€. "In general, if the angle of implantation of the cup prosthesis is not in the safe zone, it can be considered that the poor angle of implantation of the cup prosthesis will affect the range of motion of the hip joint and the service life of the prosthesis, and change the stress between the interfaces of the prosthesis. ." The idea of ​​Liu Xiaofang is precisely the problem that can be solved by the products being studied by Dr. DrGek Lim of Silicon Valley. Dr. Dr. GekLim specializes in digital imaging and is engaged in the development and research of orthopedic instruments in the United States. He was a postdoctoral fellow at Bell Labs. She carries a large black backpack all year round, carrying a black box with a hip model and an acetabular guide. This looks like a horseshoe-shaped magnetite, which can easily solve the troubled Liu. Imitate, Zhou Guanming and other orthopedic experts. A key step in total hip arthroplasty—the acetabular component can be implanted at the desired angle, minimizing the possible wear and tear and prolonging the life of the prosthesis. Zhou Guanming (left), director of the joint specialist of Foshan Traditional Chinese Medicine Hospital, demonstrated the 3D printed “artificial acetabular cup implant guideâ€. Safe Box,Small Safe Box,Safe Box For Money,Safe Box For Documents Ningbo Zhaomu Electronic Commerce Co., Ltd. , https://www.bofonhome.com
3D printing has become a good helper for orthopedic surgeons