Sternal elevation by the crane technique during pectus excavatum repair: A quantitative analysisCentral MessagePerspective

Introduction: The crane technique is used to facilitate sternal elevation to provide safe mediastinal passage during the Nuss procedure. The aim was to objectively quantitate the elevation of the crane by 3-dimensional chest images acquired during the Nuss procedure. Methods: A prospective cohort st...

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Main Authors: Erik R. de Loos, MD, Jean H.T. Daemen, MD, Nadine A. Coorens, MSc, Jos G. Maessen, MD, PhD, Yvonne L.J. Vissers, MD, PhD, Karel W.E. Hulsewé, MD, PhD
Format: Article
Language:English
Published: Elsevier 2021-10-01
Series:JTCVS Techniques
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Online Access:http://www.sciencedirect.com/science/article/pii/S2666250721004806
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author Erik R. de Loos, MD
Jean H.T. Daemen, MD
Nadine A. Coorens, MSc
Jos G. Maessen, MD, PhD
Yvonne L.J. Vissers, MD, PhD
Karel W.E. Hulsewé, MD, PhD
author_facet Erik R. de Loos, MD
Jean H.T. Daemen, MD
Nadine A. Coorens, MSc
Jos G. Maessen, MD, PhD
Yvonne L.J. Vissers, MD, PhD
Karel W.E. Hulsewé, MD, PhD
author_sort Erik R. de Loos, MD
collection DOAJ
description Introduction: The crane technique is used to facilitate sternal elevation to provide safe mediastinal passage during the Nuss procedure. The aim was to objectively quantitate the elevation of the crane by 3-dimensional chest images acquired during the Nuss procedure. Methods: A prospective cohort study was conducted. Patients undergoing the Nuss procedure were eligible. Sternal elevation was achieved by the crane technique providing a simultaneous lift of the anterior chest wall and reduction of the pectus excavatum depth. Both effects were evaluated. Three-dimensional surface images were acquired before incision, following sternal lift, and after bar implantation and quantitatively compared. Reduction of the external pectus excavatum depth was expressed as a percentage. Results: Thirty patients were included. Ninety percent were male, with a median age of 15.5 years (interquartile range [IQR], 14.5-17.4), Haller index of 3.56 (IQR, 3.09-4.65), and external pectus depth of 18 mm (IQR, 11-23). Sternal elevation by the crane provided a median 78% (IQR, 63-100) reduction of the deformity, corresponding with a residual depth of 3 mm (IQR, 0-7). The percentual reduction diminished with increasing depth of the sternal depression (correlation, –0.86). Besides reducing the deformity, the crane caused an elevation of the anterior chest over a large surface area with a maximum lift of 26 mm (IQR, 19-32). Conclusions: The crane is an effective sternal elevation technique, providing 78% reduction of the sternal depression, although its effect lessens with increasing depth. In addition, it produces an elevation of the anterior chest over a large surface area.
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spelling doaj-art-e7d79a72a84b4a3180cdf6d85757ac6d2025-08-20T04:01:02ZengElsevierJTCVS Techniques2666-25072021-10-01916717510.1016/j.xjtc.2021.05.028Sternal elevation by the crane technique during pectus excavatum repair: A quantitative analysisCentral MessagePerspectiveErik R. de Loos, MD0Jean H.T. Daemen, MD1Nadine A. Coorens, MSc2Jos G. Maessen, MD, PhD3Yvonne L.J. Vissers, MD, PhD4Karel W.E. Hulsewé, MD, PhD5Division of General Thoracic Surgery, Department of Surgery, Zuyderland Medical Center, Heerlen, The Netherlands; Address for reprints: Erik R. de Loos, MD, Division of General Thoracic Surgery, Department of Surgery, Zuyderland Medical Center, Henri Dunantstraat 5, 6419PC, Heerlen, The Netherlands.Division of General Thoracic Surgery, Department of Surgery, Zuyderland Medical Center, Heerlen, The Netherlands; Faculty of Health, Medicine and Life Sciences (FHML), School for Oncology and Developmental Biology (GROW), Maastricht, The NetherlandsDivision of General Thoracic Surgery, Department of Surgery, Zuyderland Medical Center, Heerlen, The NetherlandsDepartment of Cardiothoracic Surgery, Maastricht University Medical Center, Maastricht, The Netherlands; Faculty of Health, Medicine and Life Sciences (FHML), Cardiovascular Research Institute Maastricht (CARIM), Maastricht, The NetherlandsDivision of General Thoracic Surgery, Department of Surgery, Zuyderland Medical Center, Heerlen, The NetherlandsDivision of General Thoracic Surgery, Department of Surgery, Zuyderland Medical Center, Heerlen, The NetherlandsIntroduction: The crane technique is used to facilitate sternal elevation to provide safe mediastinal passage during the Nuss procedure. The aim was to objectively quantitate the elevation of the crane by 3-dimensional chest images acquired during the Nuss procedure. Methods: A prospective cohort study was conducted. Patients undergoing the Nuss procedure were eligible. Sternal elevation was achieved by the crane technique providing a simultaneous lift of the anterior chest wall and reduction of the pectus excavatum depth. Both effects were evaluated. Three-dimensional surface images were acquired before incision, following sternal lift, and after bar implantation and quantitatively compared. Reduction of the external pectus excavatum depth was expressed as a percentage. Results: Thirty patients were included. Ninety percent were male, with a median age of 15.5 years (interquartile range [IQR], 14.5-17.4), Haller index of 3.56 (IQR, 3.09-4.65), and external pectus depth of 18 mm (IQR, 11-23). Sternal elevation by the crane provided a median 78% (IQR, 63-100) reduction of the deformity, corresponding with a residual depth of 3 mm (IQR, 0-7). The percentual reduction diminished with increasing depth of the sternal depression (correlation, –0.86). Besides reducing the deformity, the crane caused an elevation of the anterior chest over a large surface area with a maximum lift of 26 mm (IQR, 19-32). Conclusions: The crane is an effective sternal elevation technique, providing 78% reduction of the sternal depression, although its effect lessens with increasing depth. In addition, it produces an elevation of the anterior chest over a large surface area.http://www.sciencedirect.com/science/article/pii/S2666250721004806crane techniquesternal elevationNuss procedurepectus excavatum
spellingShingle Erik R. de Loos, MD
Jean H.T. Daemen, MD
Nadine A. Coorens, MSc
Jos G. Maessen, MD, PhD
Yvonne L.J. Vissers, MD, PhD
Karel W.E. Hulsewé, MD, PhD
Sternal elevation by the crane technique during pectus excavatum repair: A quantitative analysisCentral MessagePerspective
JTCVS Techniques
crane technique
sternal elevation
Nuss procedure
pectus excavatum
title Sternal elevation by the crane technique during pectus excavatum repair: A quantitative analysisCentral MessagePerspective
title_full Sternal elevation by the crane technique during pectus excavatum repair: A quantitative analysisCentral MessagePerspective
title_fullStr Sternal elevation by the crane technique during pectus excavatum repair: A quantitative analysisCentral MessagePerspective
title_full_unstemmed Sternal elevation by the crane technique during pectus excavatum repair: A quantitative analysisCentral MessagePerspective
title_short Sternal elevation by the crane technique during pectus excavatum repair: A quantitative analysisCentral MessagePerspective
title_sort sternal elevation by the crane technique during pectus excavatum repair a quantitative analysiscentral messageperspective
topic crane technique
sternal elevation
Nuss procedure
pectus excavatum
url http://www.sciencedirect.com/science/article/pii/S2666250721004806
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