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Change in Effective Leg Length after Angular Deformity Correction by Hemiepiphyseal Stapling

BACKGROUND: The hemiepiphyseal stapling has both positive and negative effects on effective leg length. The purpose of this study was to analyze change in effective leg length after angular correction by hemiepiphyseal stapling, and to validate in clinical cases. METHODS: Mathematical analysis of a...

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Autores principales: Jung, Ho-Joong, Cho, Tae-Joon, Choi, In Ho, Chung, Chin Youb, Yoo, Won Joon, Park, Moon Seok, Bae, Jung Yun
Formato: Texto
Lenguaje:English
Publicado: The Korean Orthopaedic Association 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2867203/
https://www.ncbi.nlm.nih.gov/pubmed/20514265
http://dx.doi.org/10.4055/cios.2010.2.2.85
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author Jung, Ho-Joong
Cho, Tae-Joon
Choi, In Ho
Chung, Chin Youb
Yoo, Won Joon
Park, Moon Seok
Bae, Jung Yun
author_facet Jung, Ho-Joong
Cho, Tae-Joon
Choi, In Ho
Chung, Chin Youb
Yoo, Won Joon
Park, Moon Seok
Bae, Jung Yun
author_sort Jung, Ho-Joong
collection PubMed
description BACKGROUND: The hemiepiphyseal stapling has both positive and negative effects on effective leg length. The purpose of this study was to analyze change in effective leg length after angular correction by hemiepiphyseal stapling, and to validate in clinical cases. METHODS: Mathematical analysis of a hemiepiphyseal stapling model was conducted. The induced formula was validated in 6 cases fulfilling the assumptions of the model. Anatomical parameters involved in this formula were measured in additional 21 cases undergoing hemiepiphyseal stapling or hemiepiphysiodesis. RESULTS: Effective leg length increased or decreased according to three parameters in this model: 1) limb length distal to the operated physis (L), 2) width of the operated physis (d), and 3) the amount of angular deformity to be corrected (θ). Actual change in effective leg length of 6 cases similar to this model coincided with the predicted change at least in its direction. L/d ratio was 4.82 ± 0.51. CONCLUSIONS: Considering the narrow range of the L/d ratio, hemiepiphyseal stapling is likely to decrease effective leg length if the amount of angular correction is less than 10°, whereas to increase it if the amount of angular correction is larger than 16°. This should be taken into consideration when selecting the surgical method for angular deformity correction in skeletally immature patients.
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spelling pubmed-28672032010-06-01 Change in Effective Leg Length after Angular Deformity Correction by Hemiepiphyseal Stapling Jung, Ho-Joong Cho, Tae-Joon Choi, In Ho Chung, Chin Youb Yoo, Won Joon Park, Moon Seok Bae, Jung Yun Clin Orthop Surg Original Article BACKGROUND: The hemiepiphyseal stapling has both positive and negative effects on effective leg length. The purpose of this study was to analyze change in effective leg length after angular correction by hemiepiphyseal stapling, and to validate in clinical cases. METHODS: Mathematical analysis of a hemiepiphyseal stapling model was conducted. The induced formula was validated in 6 cases fulfilling the assumptions of the model. Anatomical parameters involved in this formula were measured in additional 21 cases undergoing hemiepiphyseal stapling or hemiepiphysiodesis. RESULTS: Effective leg length increased or decreased according to three parameters in this model: 1) limb length distal to the operated physis (L), 2) width of the operated physis (d), and 3) the amount of angular deformity to be corrected (θ). Actual change in effective leg length of 6 cases similar to this model coincided with the predicted change at least in its direction. L/d ratio was 4.82 ± 0.51. CONCLUSIONS: Considering the narrow range of the L/d ratio, hemiepiphyseal stapling is likely to decrease effective leg length if the amount of angular correction is less than 10°, whereas to increase it if the amount of angular correction is larger than 16°. This should be taken into consideration when selecting the surgical method for angular deformity correction in skeletally immature patients. The Korean Orthopaedic Association 2010-06 2010-05-04 /pmc/articles/PMC2867203/ /pubmed/20514265 http://dx.doi.org/10.4055/cios.2010.2.2.85 Text en Copyright © 2010 by The Korean Orthopaedic Association http://creativecommons.org/licenses/by-nc/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Jung, Ho-Joong
Cho, Tae-Joon
Choi, In Ho
Chung, Chin Youb
Yoo, Won Joon
Park, Moon Seok
Bae, Jung Yun
Change in Effective Leg Length after Angular Deformity Correction by Hemiepiphyseal Stapling
title Change in Effective Leg Length after Angular Deformity Correction by Hemiepiphyseal Stapling
title_full Change in Effective Leg Length after Angular Deformity Correction by Hemiepiphyseal Stapling
title_fullStr Change in Effective Leg Length after Angular Deformity Correction by Hemiepiphyseal Stapling
title_full_unstemmed Change in Effective Leg Length after Angular Deformity Correction by Hemiepiphyseal Stapling
title_short Change in Effective Leg Length after Angular Deformity Correction by Hemiepiphyseal Stapling
title_sort change in effective leg length after angular deformity correction by hemiepiphyseal stapling
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2867203/
https://www.ncbi.nlm.nih.gov/pubmed/20514265
http://dx.doi.org/10.4055/cios.2010.2.2.85
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