Experimental Biomechanics of Neonatal Brachial Plexus Avulsion Injuries Using a Piglet Model

Background: A brachial plexus avulsion occurs when the nerve root separates from the spinal cord during birthing trauma, such as shoulder dystocia or a difficult vaginal delivery. A complete paralysis of the affected levels occurs post-brachial plexus avulsion. Despite being reported in 10–20% of br...

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Main Authors: Anita Singh, Kalyani Ghuge, Yashvy Patni, Sriram Balasubramanian
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Bioengineering
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Online Access:https://www.mdpi.com/2306-5354/12/1/91
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author Anita Singh
Kalyani Ghuge
Yashvy Patni
Sriram Balasubramanian
author_facet Anita Singh
Kalyani Ghuge
Yashvy Patni
Sriram Balasubramanian
author_sort Anita Singh
collection DOAJ
description Background: A brachial plexus avulsion occurs when the nerve root separates from the spinal cord during birthing trauma, such as shoulder dystocia or a difficult vaginal delivery. A complete paralysis of the affected levels occurs post-brachial plexus avulsion. Despite being reported in 10–20% of brachial plexus birthing injuries, it remains poorly diagnosed during the acute stages of injury, leading to poor intervention approaches. The poor diagnosis of brachial plexus avulsion injury can be attributed to the currently unavailable biomechanics of brachial plexus avulsion. While the biomechanical properties of neonatal brachial plexus are available, the forces required to avulse a neonatal brachial plexus remain unknown. Methods: This study aims to provide detailed biomechanics of the required forces and corresponding strains for neonatal brachial plexus avulsion. Biomechanical tensile testing was performed on an isolated, clinically relevant piglet spinal cord and brachial plexus complex, and the required avulsion forces and strains were measured. Results: The reported failure forces and corresponding strains were 3.9 ± 1.6 N at a 27.9 ± 6.5% strain, respectively. Conclusion: The obtained data are required to understand the avulsion injury biomechanics and provide the necessary experimental data for computational model development that serves as an ideal surrogate for understanding complicated birthing injuries in newborns.
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spelling doaj-art-79fff725798445d7a4e478af7fa627052025-01-24T13:23:14ZengMDPI AGBioengineering2306-53542025-01-011219110.3390/bioengineering12010091Experimental Biomechanics of Neonatal Brachial Plexus Avulsion Injuries Using a Piglet ModelAnita Singh0Kalyani Ghuge1Yashvy Patni2Sriram Balasubramanian3Bioengineering Department, Temple University, Philadelphia, PA 19122, USABioengineering Department, Temple University, Philadelphia, PA 19122, USANorth Creek High School, Bothell, WA 98012, USASchool of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, USABackground: A brachial plexus avulsion occurs when the nerve root separates from the spinal cord during birthing trauma, such as shoulder dystocia or a difficult vaginal delivery. A complete paralysis of the affected levels occurs post-brachial plexus avulsion. Despite being reported in 10–20% of brachial plexus birthing injuries, it remains poorly diagnosed during the acute stages of injury, leading to poor intervention approaches. The poor diagnosis of brachial plexus avulsion injury can be attributed to the currently unavailable biomechanics of brachial plexus avulsion. While the biomechanical properties of neonatal brachial plexus are available, the forces required to avulse a neonatal brachial plexus remain unknown. Methods: This study aims to provide detailed biomechanics of the required forces and corresponding strains for neonatal brachial plexus avulsion. Biomechanical tensile testing was performed on an isolated, clinically relevant piglet spinal cord and brachial plexus complex, and the required avulsion forces and strains were measured. Results: The reported failure forces and corresponding strains were 3.9 ± 1.6 N at a 27.9 ± 6.5% strain, respectively. Conclusion: The obtained data are required to understand the avulsion injury biomechanics and provide the necessary experimental data for computational model development that serves as an ideal surrogate for understanding complicated birthing injuries in newborns.https://www.mdpi.com/2306-5354/12/1/91avulsionneonatalbrachial plexusbiomechanicsstrainload
spellingShingle Anita Singh
Kalyani Ghuge
Yashvy Patni
Sriram Balasubramanian
Experimental Biomechanics of Neonatal Brachial Plexus Avulsion Injuries Using a Piglet Model
Bioengineering
avulsion
neonatal
brachial plexus
biomechanics
strain
load
title Experimental Biomechanics of Neonatal Brachial Plexus Avulsion Injuries Using a Piglet Model
title_full Experimental Biomechanics of Neonatal Brachial Plexus Avulsion Injuries Using a Piglet Model
title_fullStr Experimental Biomechanics of Neonatal Brachial Plexus Avulsion Injuries Using a Piglet Model
title_full_unstemmed Experimental Biomechanics of Neonatal Brachial Plexus Avulsion Injuries Using a Piglet Model
title_short Experimental Biomechanics of Neonatal Brachial Plexus Avulsion Injuries Using a Piglet Model
title_sort experimental biomechanics of neonatal brachial plexus avulsion injuries using a piglet model
topic avulsion
neonatal
brachial plexus
biomechanics
strain
load
url https://www.mdpi.com/2306-5354/12/1/91
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AT yashvypatni experimentalbiomechanicsofneonatalbrachialplexusavulsioninjuriesusingapigletmodel
AT srirambalasubramanian experimentalbiomechanicsofneonatalbrachialplexusavulsioninjuriesusingapigletmodel