Effect of posterior cruciate sacrifice on durability of the cement-bone interface. A nine-year survivorship study of 100 total condylar knee arthroplasties.

This article presents a survivorship analysis of the second conservative 100 primary total-condylar knee arthroplasties in 75 patients performed between 1979 and 1980, with a maximum follow-up of 9 years. With this type of knee arthroplasty, the posterior cruciate ligament is routinely sacrificed. Survivorship results revealed that 98.9 per cent of the knees had good outcome at 9 years of follow-up, using revision surgery for aseptic and septic loosening and radiographic evidence of global radiolucency or shift of the component as endpoint. Radiographic survivorship analysis showed well-fixed components in 87 per cent of implants, using endpoint criteria of appearance and progression of radiolucency under tibial component. Sacrificing the posterior cruciate ligament does not adversely affect durability of fixation of the total-condylar knee arthroplasty. Bone cement provides an excellent fixation of total knee implant.