Unusual mechanical complications of unicompartmental low contact stress mobile bearing patellofemoral arthroplasty: A cause for concern?

作者：Arumilli B R B^*; Ng A B Y; Ellis D J; Hirst P

来源：Knee, 2010, 17(5): 362-364.

DOI：10.1016/j.knee.2009.10.006

• Knee
• Patellofemoral arthroplasty
• Total knee arthroplasty
• Low contact stress
• Metal backed

The Low Contact Stress Patellofemoral Arthroplasty (LCS PFA) is a newer design belonging to the second generation of inlay type implants, addressing the problems encountered in the first generation models (Lubinus & Richard's) The cemented mobile bearing metal backed patellar component in this system is "modular"; allowing interchangeable usage with either the trochlear component in a PFA or the femoral component of a total knee arthroplasty, thus obviating the need for patellar revision during conversion of PFA to TKA The younger active patient with a PFA may exert extreme Joint reaction forces on then patellar implant, rendering early loosening of the patellar implant The endurance of this implant with repeated flexion beyond 90 is also a concern We describe a series of thre

• 出版日期2010-10