Reconstruction of medial patello-femoral ligament: Comparison of two surgical techniques

The medial patello-femoral ligament is considered the most important passive patellar stabilizer and its proper functionality is essential for the patello-femoral joint stability. In this work, 18 human knees were randomly divided into two groups and reconstructed through two different surgical tech...

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Bibliographic Details
Published in:Journal of the mechanical behavior of biomedical materials 2016-06, Vol.59, p.272-278
Main Authors: Criscenti, G., De Maria, C., Sebastiani, E., Tei, M., Placella, G., Speziali, A., Vozzi, G., Cerulli, G.
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Cadaver
Devices
Female
Femur
Humans
Ligament biomechanics
Ligament reconstruction
Ligaments
Ligaments, Articular - surgery
Male
Medial patello-femoral ligament (MPFL)
Patella
Patellofemoral Joint - surgery
Random Allocation
Reconstruction
Reconstructive Surgical Procedures - methods
Restoration
Screws
Structural properties
Surgical implants
Surgical techniques
Tendons
Tunnels (transportation)
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Summary:The medial patello-femoral ligament is considered the most important passive patellar stabilizer and its proper functionality is essential for the patello-femoral joint stability. In this work, 18 human knees were randomly divided into two groups and reconstructed through two different surgical techniques: the “Through tunnel tendon” and the “Double converging tunnel” reconstructions. Subsequently, the samples were mechanically tested to evaluate the structural properties of reconstructed femur-MPFL-Patella complex (rFMPC). Particular attention was given to maintain the anatomical orientation between the patella and the graft. Both procedures showed lower stiffness and higher ultimate strain and absorbed energy compared to the native MPFL, but the advantages of the double converging tunnel technique are related to the restoration of the native MPFL sail-shape, to a better stress distribution on the patella, to the use of a single interference screw as fixation device and to the simplicity, rapidity and cost-effectivity of the surgical procedure. The evaluation of the structural properties of rMPFL is fundamental to evaluate the adequacy of the different techniques to restore the physiological structural properties of the native MPFL.
ISSN:1751-6161
1878-0180
DOI:10.1016/j.jmbbm.2016.02.009