PROBLEM TO BE SOLVED: To provide an artificial knee joint that enhances adherence between a tibial component and a tibia.SOLUTION: An artificial knee joint comprises: a thighbone component 5 mounted in the distal end of a thighbone 1 and having an inner condyle and an outer condyle in the inside and outside a tibial component 6 mounted in the proximal end of a tibia 2, having an inner articular surface and an outer articular surface for rotatively slidably receiving the inner condyle and the outer condyle, respectively, and formed of the U-shaped cut opened in the rear end between the inner articular surface and the outer articular surface and a base 7 inserted between the tibial component and the tibia, and forming the U-shaped cut continued in the U-shaped cut of the tibial component. In the artificial knee joint, a peg 8 of the U-shaped cross section comprising a front wall inserted into the tibial front part in the lower surface of the base and two pieces of drooping walls extending in the tibia from both sides of the front wall to the rear is formed, and passed in the U-shaped cut of the base from between the drooping wall of the peg by making a tibial proximal end central part in non-resection and taken in the U-shaped cut of the tibial component.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2016,JPO&INPIT【課題】人工膝関節において、脛骨コンポーネントと脛骨の固着性を高める。【解決手段】大腿骨1の遠位端に装着され、内顆と外顆とを内外に有する大腿骨コンポーネント5と、脛骨2の近位端に装着され、内顆と外顆とをそれぞれ回転及び摺動可能に受ける内関節面と外関節面とを有し、内関節面と外関節面との間に後端に開口するU字形カットが形成される脛骨コンポーネント6と、脛骨コンポーネントと脛骨の間に挿入され、脛骨コンポーネントのU字形カットに連続するU字形カットを形成したベース7とからなる人工膝関節において、ベースの下面に脛骨の前部に挿入される前壁と、前壁の両側から脛骨中を後方に延びる二枚の下垂壁とからなる断面コ字形のペグ8を形成し、脛骨の近位端中央部を未切除にしてペグの下垂壁の間からベースのU字形カットの中を通して脛骨コンポーネントのU字形カットの中に取り込む。【選択図】図7
