Besides the fact that both sides inside and outside mutually not to be parallel, one side of both sides inside or outside the outer part land of the sole and the angle which is formed, opposes to this, on the longitudinal section of mid- sole it was formed as one unit in the insole, the sole which includes at least one of mid- sole, and out sole and the footwear which includes with the crust, the insole of the sole, out sole, or, either the insole and out sole one, the side the footwear which has the functional sole for the retrogressive knee arthropathy which features that it is smaller than the outer part land of the sole and the angle which is formedMaterializing, deflecting in the knee and the load disperse which is given uniformly making, when walking, reforming the O leg and X leg naturally, it eases the pain of the retrogressive knee arthropathy, it is possible to prevent this beforehand, in addition, there is an effect that the O leg or X leg is reformed, correct walking attitude and body structure being established, it is possible to reform the general framework of the body of the wearing person.< Selective figure >Figure 4インソール、ミッドソール、及びアウトソールの少なくとも1つを含む靴底と、外皮とを含む履物において、靴底のインソール、アウトソール、又は、インソールとアウトソールの何れか1つと一体に形成されたミッドソールの縦断面において、内側と外側の両側面が互いに平行でなく、内側又は外側の両側面の一側面が靴底の外側地面となす角度が、これに対向する他側面が靴底の外側地面となす角度よりも小さいことを特徴とする退行性膝関節症のための機能性靴底を備えた履物を具現し、膝に偏向して与えられる荷重を均一に分散させて、歩行時、自然にO脚及びX脚を矯正して、退行性膝関節症の痛みを緩和し、これを未然に防止することができ、また、O脚又はX脚が矯正され、正しい歩行姿勢及び身体構造が確立されて、着用者の身体の全般的な骨格を矯正することができるという効果がある。【選択図】図4
