Experimental Rat Peripheral Nerve Models: Surgical Exposures and Applications.

Area of Science:

• Neuroscience
• Surgical Techniques
• Animal Models

Background:

• Peripheral nerve regeneration mechanisms and postoperative recovery require further investigation.
• Rat models are valuable for studying peripheral nerve injury and repair due to cost-effectiveness and human similarity.
• A knowledge gap exists in understanding peripheral nerve regeneration.

Purpose of the Study:

• To provide a comprehensive overview of surgical dissection techniques for rat peripheral nerve models.
• To detail the application of various rat peripheral nerve models in research.
• To guide the selection of appropriate models for peripheral nerve regeneration studies.

Main Methods:

• Dissections of upper and lower extremity peripheral nerves were performed in Sprague-Dawley rats.
• Standardized surgical techniques were documented for multiple nerves including sciatic, median, and ulnar nerves.
• Procedures were approved by the Institutional Animal Care and Use Committee.

Main Results:

• All targeted peripheral nerves were successfully identified and exposed.
• Functional correlations and applications for regeneration, neuropathic pain, motor recovery, and nerve grafting were summarized.
• The sciatic nerve is a well-established model; median and ulnar nerves offer reliable forelimb motor assessment with reduced self-mutilation risk.

Conclusions:

• This review defines dissection techniques, applications, and comparative advantages of rat peripheral nerve models.
• Standardized methods are presented to assist in model selection for peripheral nerve regeneration research.
• The study aims to strengthen translational research in peripheral nerve repair and regeneration.