Development of a Neonatal Rat Model for Brachial Plexus Birth Injury.

Area of Science:

• Neuroscience
• Surgical Innovation
• Animal Models

Background:

• Neonatal brachial plexus injuries (BPBI) present complex clinical challenges.
• Existing animal models for BPBI research are limited and lack reproducibility.
• Heterogeneity in clinical presentations complicates the study of BPBI.

Purpose of the Study:

• To develop and validate a reproducible surgical protocol for inducing pan-plexal neonatal brachial plexus injuries in Sprague-Dawley rat pups.
• To establish a reliable animal model for investigating BPBI.
• To provide detailed surgical instructions for BPBI research.

Main Methods:

• A dorsal surgical approach under operative microscopy was employed in 5-day-old Sprague-Dawley rat pups.
• The procedure involved precise dissection to access and cauterize the brachial plexus.
• An absorbable gelatin sponge was used to prevent nerve regeneration post-injury.

Main Results:

• The surgical protocol was successfully performed on 15 rat pups with an 87% survival rate.
• All surviving rats exhibited complete pan-plexal injuries.
• The induced injuries were confirmed to be reproducible and effective for research.

Conclusions:

• The developed surgical protocol provides a reliable and reproducible method for creating neonatal brachial plexus injuries in rats.
• This validated animal model is suitable for advancing research into brachial plexus birth injuries.
• The technique facilitates the study of BPBI mechanisms and potential therapeutic interventions.