Experience with New Jersey LCS Total Knee System.

概要

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The short-term results of 46 knees in 37 patients treated by LCS total knee systems were evaluated clinically and radiologically. The models used were the Rotating Platform type in 22 knees and the Meniscal Bearing type in 24 knees. Using the criteria described by three universities, the average clinical score after operation achieved by the Rotating Platform type was 88.9 points and 86.4 points for the Meniscal Bearing type. Component placement angle was good and follow-up revealed that the components remained in place. We found radiolucent lines in 69.6% and subsidence in 21.7% of the cases, but no further worsening was observed. The motion of the meniscal insert during bending fell into three groups; forward shift, backward shift and no shift. The range of motion was significantly wider in the backward shift group (flexion: average 132°), but there was no difference among the three groups in regard to clinical results.