Abstract: We previously evaluated 119 consecutive total knee
arthroplasties that were performed in eighty-six patients with use of the
cemented LCS (low contact stress) rotating-platform system with an
all-polyethylene patellar component. The average age of the patients at the
time of surgery was seventy years (range, thirty-seven to eighty-eight years).
The purpose of this study was to report the updated results at a minimum
follow-up of fifteen years.
Thirty-seven patients (fifty-three knees) were living, and no patient was
lost to follow-up. No knee was revised because of loosening, osteolysis, or
wear. Three knees required a reoperation (two for periprosthetic fractures and
one for infection). No component was revised as a part of the reoperations.
Osteolysis was present in three knees. No knee had radiographic signs of
component loosening, and there were no dislocated bearings. The average range
of motion was from 1° of extension to 105° of flexion. The average
clinical and functional Knee Society scores were 43 and 49, respectively, at
the preoperative evaluation and 85 and 58 at the time of the final follow-up.
We concluded that the cemented LCS rotating-platform knee performed well, with
durable clinical and radiographic results at a minimum follow-up of fifteen
Level of Evidence: Therapeutic Level IV. See Instructions
to Authors for a complete description of levels of evidence.