A Case Report of Unicompartmental Knee Arthroplasty Fracture of the Femoral Component.
Introduction
Unicompartmental knee arthroplasty (UKA) is performed with yearly rate of 9% in UK, and <8% in USA. It has been shown to be a successful and less invasive alternative to complete knee arthroplasty in certain patients total knee arthroplasty (TKA). Fracture of the femoral component after (UKA) has never been reported in the literature. Consequently, to investigate the major causes and mechanisms of (UKA) failure, we present a case of femoral component failure following (UKA).


Case Report
A 62-year-old patient with 2 years following an UKA presented with a right pain, stiffness, and gait abnormalities. After taking full history and careful examination and obtaining a new radiograph, a fracture of the femoral component was revealed. A revision surgery with TKA has been done, and the outcome was assessed regularly, and good results were achieved.


Conclusion
The exact reason for a femoral component fracture following UKA is yet unknown. To make an early diagnosis and avoid the need for complex knee revision surgeries, long-term follow-up is crucial for early detection of the clinical signs and symptoms of implant failure.