Sagittal radius of curvature, trochlea design and ultracongruent insert in total knee arthroplasty

[摘要] The incidence of knee osteoarthritis has increased significantly in the last decade.1,2 In the United States, the number of total knee arthroplasties (TKAs) performed is expected to exceed three million per year by 2030.1 The National Joint Registry (NJR), which covers England, Wales, Northern Ireland and the Isle of Man, recorded 98,147 primary knee arthroplasties (of which 89.7% were total knee arthroplasties) in 2016.2 Patients undergoing TKA are increasingly younger and demand improved function following their surgery.3 Total knee arthroplasty design has evolved since it was first introduced following better understanding of knee biomechanics. This review aims to discuss the biomechanics of the native human knee, some of the design philosophies in TKA, its effect on kinematics of the knee and clinical outcome. We set out to answer the following questions.

[学科分类] 神经科学

[关键词] sagittal radius of curvature;trochlea geometry;ultracongruent insert