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Patient-Specific Custom Patellofemoral Arthroplasty
Erik Haneberg1, Andrew Phillips1, Josh Wright-Chisem1
1Department of Orthopaedics, Rush University Medical Center, Chicago, Illinois, USA.
Video Journal of Sports Medicine
|July 21, 2025
Summary
Custom patellofemoral arthroplasty (PFA) precisely matches patient anatomy for improved tracking and outcomes. This advanced PFA technique shows excellent implant survivorship and high patient satisfaction, even in complex cases.
Area of Science:
- Orthopedic surgery
- Biomedical engineering
- Arthroplasty
Background:
- Patellofemoral arthroplasty (PFA) utilizes inlay and onlay devices.
- Innovations in custom instrumentation enable PFA that matches patient-specific trochlear morphology.
Purpose of the Study:
- To describe a novel technique for patellofemoral arthroplasty (PFA) using custom instrumentation.
- To evaluate the outcomes of this patient-specific PFA approach.
Main Methods:
- A medial parapatellar arthrotomy allows patellar eversion for visualization.
- Custom instrumentation and guides are used for precise bone preparation and implant placement.
- Implants are secured with bone cement, followed by closure and range of motion assessment.
Main Results:
- Implant survivorship exceeds 90% at 5 years and 83% at 10 years.
- Significant improvements in Knee Society functional (49 to 89) and objective (52 to 89) scores were observed.
- Over 90% of patients returned to sport, with no revisions in a cohort followed for over 11 years.
Conclusions:
- Custom PFA utilizing patient anatomy and custom implants improves patellar tracking, particularly in dysplastic cases.
- This patient-specific approach offers potential for enhanced patient satisfaction and advancements in arthroplasty care.
