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The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

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Patellofemoral Arthroplasty: An Evolving Science.

Jess H Lonner¹

¹Associate Professor of Orthopaedic Surgery, Rothman Institute, Sidney Kimmel School of Medicine at Thomas Jefferson University, Philadelphia, Pennsylvania.

Instructional Course Lectures

|June 9, 2017

Summary

Patellofemoral arthroplasty (PFA) has improved outcomes due to better implant designs and surgical techniques. Advances now lead to better patellar tracking and fewer failures, increasing PFA use.

Area of Science:

Orthopedic Surgery
Biomedical Engineering

Background:

Patellofemoral arthritis affects many patients, with isolated patellofemoral arthroplasty (PFA) being a treatment option.
Historically, PFA had high failure rates due to patellar instability from component malposition, soft-tissue imbalance, and poor implant designs.

Purpose of the Study:

To review the evolution of PFA and its impact on patient outcomes.
To highlight advancements in surgical techniques, implant design, and patient selection for PFA.

Main Methods:

Review of literature and clinical data on patellofemoral arthroplasty.
Analysis of factors influencing patellar tracking and implant survival.
Evaluation of outcomes after PFA, including revision rates.

Main Results:

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Improvements in trochlear implant design, particularly onlay-style components, have enhanced patellar tracking.
Refined surgical indications, component positioning, and soft-tissue balancing have reduced PFA failures.
Favorable outcomes after revision surgery or conversion to total knee arthroplasty following PFA have been reported.

Conclusions:

Advancements in PFA have led to improved functional outcomes and reduced instability.
Onlay-style trochlear components significantly enhance patellar tracking and PFA durability.
Increased use of PFA is supported by favorable revision data and improved patient selection.