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Mini-Open Lateral Approach Trochleoplasty for Patellar Dislocation.

Petri J Sillanpää¹

¹Pihlajalinna Tampere Hospital, Tampere, Finland.

Video Journal of Sports Medicine

|November 3, 2025

Summary

This summary is machine-generated.

This study presents a mini-open lateral approach trochleoplasty, a safe and effective technique for correcting severe trochlear dysplasia. The procedure offers good long-term outcomes and allows for rapid patient recovery.

Keywords:

patella dislocation surgical technique thin-flap trochleaplasty

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Area of Science:

Orthopedic Surgery
Sports Medicine
Biomechanical Engineering

Background:

Recurrent patellar dislocations are often linked to anatomical abnormalities like trochlear dysplasia.
Trochleaplasty is a key surgical strategy to stabilize the patella by correcting trochlear dysplasia.

Purpose of the Study:

To present a mini-open lateral approach for thin-flap trochleoplasty.
To detail a less-invasive surgical technique for correcting severe trochlear dysplasia.

Main Methods:

A mini-open lateral approach is used, preserving the trochlear cartilage.
Subchondral bone is removed to reshape the trochlea anatomically.
The lateral condyle height is maintained, optimizing healing and improving the lateral trochlea inclination (LTI) angle.

Main Results:

Postoperative recovery includes immediate range of motion and full weightbearing.
Return to sports aligns with timelines for medial patellofemoral ligament reconstruction.
Over 5-year follow-up, MRI shows good cartilage healing without significant lesions.

Conclusions:

Mini-open lateral approach trochleoplasty is a safe and effective procedure.
The technique successfully corrects trochlear dysplasia, leading to normal or near-normal trochlear anatomy.
Satisfying long-term subjective outcomes are anticipated.