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The Modified Trochleoplasty for Trochlear Dysplasia Types B and D
Sergio Marinho de Gusmão Canuto1,2, Arthur Macedo de Gusmão Canuto1, Camilo Partezani Helito1,3
1Brazilian Storm Knee Research Group (BS Knee), São Paulo, Brazil.
Arthroscopy Techniques
|August 18, 2025
Summary
The Brazilian trochleoplasty reshapes the trochlear groove to treat recurrent patellar instability caused by severe trochlear dysplasia. This modified technique offers a reproducible and effective surgical option for improved patellar stability.
Area of Science:
- Orthopedic Surgery
- Biomechanical Engineering
Background:
- Trochlear dysplasia is a primary cause of recurrent patellar instability.
- High-grade dysplasia often necessitates surgical correction.
Purpose of the Study:
- To present the modified "Brazilian trochleoplasty" technique for treating recurrent patellar instability.
- To detail the indications and methodology of this novel surgical approach.
Main Methods:
- The Brazilian trochleoplasty reshapes the trochlear groove, creating a single central sulcus.
- Fixation is achieved with headless compression screws.
- The technique avoids additional osteotomies, preserving cartilage.
Main Results:
- This modified technique is indicated for Dejour types B and D trochlear dysplasia with significant prominence (>5 mm).
- It offers an accessible and effective alternative to traditional sulcus-deepening procedures.
- The method aims to improve patellar stability and reduce complications like stiffness.
Conclusions:
- The Brazilian trochleoplasty is a reproducible technique for managing severe trochlear dysplasia and recurrent patellar instability.
- It provides an effective surgical solution for young, active patients, enhancing patellar stability.
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