Unconstrained knee arthroplasty after patellectomy.

ABSTRACT

The authors report seven cases of unconstrained knee arthroplasty with excision of both cruciate ligaments, after previous patellectomy. Six of these seven cases were completely painfree and function was satisfactory in all cases. The reasons for previously reported pain and instability after total unconstrained knee arthroplasty with excision of the cruciate ligaments and a previous patellectomy are discussed.