Knee reconstruction
Knee osteotomy				Bone cutting guide			Printout

      Total knee replacement is caused by severe knee arthritis, rheumatoid arthritis and osteochondral necrotizing disease. The restoration of the normal anatomical force line of the lower limb is an important factor for the success of total knee arthroplasty, while the traditional knee arthroplasty is to find the force line of the lower limb through X-ray film, the rough intraoperative femoral bone marrow positioning and the extracorporeal bone marrow positioning device to locate the bone, which is usually difficult to obtain an accurate preoperative design effect. According to the CT data, 3D reconstruction is carried out, and the normal lower limb force lines were found on the reconstructed model, so as to make the prosthesis fix the interface, distribute the stress evenly, and restore the physiological balance of the knee ligament forces. After the completion of the design of the prosthesis, the finite element analysis, verification and optimization will be carried out.。