Legacy constrained condylar knee (LCCK) components are designed in the way that they can also be used in conjunction with a posterior-stabilized (PS) polyethylene insert, when adequate collateral stability is present. This study comprised 27 revision total knee arthroplasties (TKA) treated using an LCCK prosthesis and a PS polyethylene insert. Substantial range of motion and Knee Society score improvements were achieved in all subjects. Radiolucent lines between the block-cement were noted in 6 of 27 knees, but not significant. During TKA requiring the use of a femoral augment or stem extension, the design offering least constraint can be chosen, and an LCCK prosthesis with a PS polyethylene insert could be a satisfactory option.
The Journal of Arthroplasty, Volume 28, Issue 4, 566 - 569
Revision Total Knee Arthroplasty Using a Constrained Condylar Knee Prosthesis in Conjunction with A Posterior Stabilized Articular PolyethyleneLee, Jin Kyu et al.