Recently, the Department of Joint Surgery, Southwest Military Hospital of the Army Military Medical University conducted the first individualized 3D printing of enamel metal pads to repair the huge bone defect knee joint revision surgery for an 84-year-old patient. On the first day after surgery, the elderly can get out of bed and walk with the help of other people, and they are now recovering well. The surgeon, the chief surgeon of the surgery, and the director of the Department of Joint Surgery, Southwest Hospital, Army Military Medical University, said that total knee arthroplasty is one of the most effective methods for the treatment of end-stage knee disease, but after joint replacement, due to postoperative infection, aseptic loosening, Complications such as osteolysis often cause bone defects around the joint. Traditional bone cement, allogeneic or autogenous bone grafting techniques have various problems that affect the stability and longevity of the prosthesis. More difficult is that the shape of the bone defect varies widely. The use of the existing modular metal block can not fully fill and reconstruct the defect bone structure, which leads to the clinical efficacy of the knee repair surgery. It is understood that base metal has better biocompatibility and bone ingrowth effect, and is more suitable as a metal material implanted in the human body. However, human joint metal implants are currently dominated by titanium alloys because of the very high melting point of base metals (over 3,000 degrees Celsius). Yangliu and its clinical application research and development team cooperated with domestic 3D printing companies to successfully produce bismuth metal 3D printing porous blocks. According to Yang Liu, the key to completing this operation is the computer-aided design of the pad and the accuracy of metal 3D printing. The patient-tailored 3D printed enamel metal pad has a good fit and surface roughness that perfectly fills the huge bone defect, ensuring the initial stability of the ruthenium metal block implant after the bone defect, and the surface is rough and porous. The trabecular design can also allow the autologous bone to rapidly grow into the metal pores, thereby obtaining long-term stability of the prosthesis and the autologous bone. In addition, the surgical procedure is simplified, the operation time is greatly reduced, complications are reduced, and the long-term stability of the prosthesis after implantation is effectively ensured. (health report) Collapsible Foot Spa,Foot Spa Bath Massager,Foot Bath Spa Massager,Foot Soak Tub Huaian Mimir Electric Appliance Co., LTD , https://www.footspamachine.com