Humeral retroversion and shoulder muscle changes in infants with internal rotation contractures following brachial plexus birth palsy
Fabian van de Bunt, Tom van Essen, Johannes A van der Sluijs, Department of Orthopedics, Amsterdam UMC, VU University Medical Center, Amsterdam 1081 HV, Netherlands
Michael L Pearl, Department of Shoulder and Elbow Surgery, Kaiser Permanente Medical Center, Los Angeles, Ca 90027, United States
Author contributions: van de Bunt F designed the study, and performed data collection, analysis and interpretation of data, writing of (the first draft) of the manuscript, critical evaluation of the intelligent content of the final version; Pearl ML designed the study and performed data interpretation, writing of the manuscript, critical evaluation of the intelligent content of the final version; van Essen T performed data collection, analysis and interpretation of data, writing of (the first draft) manuscript; van der Sluijs JA designed the study and performed data interpretation, writing of the manuscript, and critical evaluation of the intelligent content of the final version; all authors made significant contributions to the manuscript, conforming to the standard proposed by the ICMJE.
Institutional review board statement: We are pleased to confirm that the Medical Research Involving Human Subjects Act (WMO) does not apply to the above-mentioned study and that an official approval of this study by our committee is not required.
Informed consent statement: We received an IRB waiver from the Institutional review board since this was a retrospective observational study, utilizing MRI scans made strictly for clinical purposes. MRIs were all anonymized by the Radiology department before conducting our study. See the attached IRB statement.
Conflict-of-interest statement: The authors whose names are listed immediately below certify that they have NO affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.
STROBE statement: The authors have read the STROBE Statement-checklist of items, and the manuscript was prepared and revised according to the STROBE Statement-checklist of items.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author to: Fabian van de Bunt, MD, MSc, Doctor, MD, Department of Orthopedics, Amsterdam UMC, VU University Medical Center, De Boelelaan 1117, Amsterdam 1081 HV, Netherlands. email@example.com
Received: August 22, 2018
Peer-review started: August 22, 2018
First decision: October 4, 2018
Revised: October 16, 2018
Accepted: November 15, 2018
Article in press: November 15, 2018
Published online: December 18, 2018