The spherocentric knee.
D001178:Arthroplasty; D002858:Chromium Alloys; D006801:Humans; D007595:Joint Prosthesis; D007717:Knee / Q000601:surgery; D011474:Prosthesis Design; D013193:Stainless Steel
D002858:Chromium Alloys; D013193:Stainless Steel