Patellofemoral Arthroplasty: A Modern Solution for Anterior Knee Osteoarthritis

Patellofemoral osteoarthritis (PFOA) is one of the leading causes of pain in the front of the knee, especially in women over 55. It is often underdiagnosed but can significantly limit daily activities and quality of life.

When physiotherapy, bracing, medications, and lifestyle changes are no longer effective, a less invasive surgical option is available: patellofemoral arthroplasty (PFA). Modern PFA implants provide more reliable outcomes, preserve most of the natural knee joint, and allow for faster recovery compared to total knee replacement.

A key topic in current research is the comparison between two implant types:

• Onlay implants, widely used and easier to position, but more likely to alter native anatomy.
• Inlay implants, designed to better replicate the patient’s original joint shape and biomechanics.

Our systematic review examines the benefits, limitations, and complication rates of both implant designs, including differences between individual models. The goal is to help surgeons and patients identify the most effective treatment for isolated patellofemoral osteoarthritis.