Rotational-guided growth

Background: Rotational deformities of the femur and tibia are some of the most common orthopedic alignment problems in the lower extremity. In-toeing and out-toeing are common complaints seen by pediatric orthopedic surgeons as well. The idea of guided growth to correct axial rotation deformities in...

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Main Authors: Gonzalo A Martel, Larry Holmes, Gabriela Sobrado, Eduardo Santini Araujo, Dror Paley, Francisco Praglia, Gabriel Arguello, Elena Arellano, Gustavo Rodriguez Flores
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2018-01-01
Series:Journal of Limb Lengthening & Reconstruction
Subjects:
Online Access:http://www.jlimblengthrecon.org/article.asp?issn=2455-3719;year=2018;volume=4;issue=2;spage=97;epage=105;aulast=Martel
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author Gonzalo A Martel
Larry Holmes
Gabriela Sobrado
Eduardo Santini Araujo
Dror Paley
Francisco Praglia
Gabriel Arguello
Elena Arellano
Gustavo Rodriguez Flores
author_facet Gonzalo A Martel
Larry Holmes
Gabriela Sobrado
Eduardo Santini Araujo
Dror Paley
Francisco Praglia
Gabriel Arguello
Elena Arellano
Gustavo Rodriguez Flores
author_sort Gonzalo A Martel
collection DOAJ
description Background: Rotational deformities of the femur and tibia are some of the most common orthopedic alignment problems in the lower extremity. In-toeing and out-toeing are common complaints seen by pediatric orthopedic surgeons as well. The idea of guided growth to correct axial rotation deformities in children is appealing. The purpose of this study was to investigate this concept and to test it in a large animal model taking advantage of the human like dimensions and biomechanics. Method: To generate axial-rotational growth we tether the growth plate on both sides at a fixed inclined angle on each side a cable with two screws. This construct was called the Percutaneous Progressive Derotator (PPD). Eight calves, two-month old, four male (50%) and the other four female, were used as models. The PPD device was implanted at the distal physis of the right metacarpal in an external rotation configuration, leaving the left side as control. The PPD device was left in for 3 months and was then removed. The total followed up was 2 years and 3 months. Results: The hypothesis that guided growth was possible in large animals has been confirmed. Rotation of 24° average were achieved in the right metacarpus of the growing cattle (P < 0.001), using the torque generated in the growth plate by the PPD.
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spelling doaj.art-d3dc86f59c404fd2aed510880096ae252022-12-21T18:45:10ZengWolters Kluwer Medknow PublicationsJournal of Limb Lengthening & Reconstruction2455-37192455-37192018-01-01429710510.4103/jllr.jllr_6_18Rotational-guided growthGonzalo A MartelLarry HolmesGabriela SobradoEduardo Santini AraujoDror PaleyFrancisco PragliaGabriel ArguelloElena ArellanoGustavo Rodriguez FloresBackground: Rotational deformities of the femur and tibia are some of the most common orthopedic alignment problems in the lower extremity. In-toeing and out-toeing are common complaints seen by pediatric orthopedic surgeons as well. The idea of guided growth to correct axial rotation deformities in children is appealing. The purpose of this study was to investigate this concept and to test it in a large animal model taking advantage of the human like dimensions and biomechanics. Method: To generate axial-rotational growth we tether the growth plate on both sides at a fixed inclined angle on each side a cable with two screws. This construct was called the Percutaneous Progressive Derotator (PPD). Eight calves, two-month old, four male (50%) and the other four female, were used as models. The PPD device was implanted at the distal physis of the right metacarpal in an external rotation configuration, leaving the left side as control. The PPD device was left in for 3 months and was then removed. The total followed up was 2 years and 3 months. Results: The hypothesis that guided growth was possible in large animals has been confirmed. Rotation of 24° average were achieved in the right metacarpus of the growing cattle (P < 0.001), using the torque generated in the growth plate by the PPD.http://www.jlimblengthrecon.org/article.asp?issn=2455-3719;year=2018;volume=4;issue=2;spage=97;epage=105;aulast=MartelFemoral anteversionguided growthin-toeinglimb torsionlimb malalignmentout-toeingrotational deformitiestibial torsion.
spellingShingle Gonzalo A Martel
Larry Holmes
Gabriela Sobrado
Eduardo Santini Araujo
Dror Paley
Francisco Praglia
Gabriel Arguello
Elena Arellano
Gustavo Rodriguez Flores
Rotational-guided growth
Journal of Limb Lengthening & Reconstruction
Femoral anteversion
guided growth
in-toeing
limb torsion
limb malalignment
out-toeing
rotational deformities
tibial torsion.
title Rotational-guided growth
title_full Rotational-guided growth
title_fullStr Rotational-guided growth
title_full_unstemmed Rotational-guided growth
title_short Rotational-guided growth
title_sort rotational guided growth
topic Femoral anteversion
guided growth
in-toeing
limb torsion
limb malalignment
out-toeing
rotational deformities
tibial torsion.
url http://www.jlimblengthrecon.org/article.asp?issn=2455-3719;year=2018;volume=4;issue=2;spage=97;epage=105;aulast=Martel
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AT larryholmes rotationalguidedgrowth
AT gabrielasobrado rotationalguidedgrowth
AT eduardosantiniaraujo rotationalguidedgrowth
AT drorpaley rotationalguidedgrowth
AT franciscopraglia rotationalguidedgrowth
AT gabrielarguello rotationalguidedgrowth
AT elenaarellano rotationalguidedgrowth
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