Nerve Fascicle Dissection
Nerve Fascicle Dissection - Related Videos
05:29
Axoplasm Isolation from Rat Sciatic Nerve
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Cited by 6 •
2010
We demonstrate a protocol for axoplasm isolation from adult rat sciatic nerve based on dissection of nerve fascicles and incubation in hypotonic medium to release myelin and lyse non-axonal structures, followed by extraction of the remaining axon-enriched material.
01:25
Fascicle Arrangement in Skeletal Muscles
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2025
Fascicles are bundles of muscle fibers in a skeletal muscle. Muscle fascicle arrangement is directly associated with the power and range of motion of various muscles. The configuration of these fascicles can vary, leading to different functional outcomes. The four primary types of muscle based on fascicle arrangement are: Parallel Muscles: In this type, fascicles run parallel to the long axis of the muscle. Examples include the biceps brachii and the rectus abdominis. When parallel muscles...
03:55
In Vivo Single-Fiber Recording of Sciatic Nerve C-Fibers in Rats
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2025
This video demonstrates a single-fiber recording of C-fiber nerve conduction in rats. An anesthetized rat is incised to expose the sciatic nerve, which provides sensory and motor supply to the lower limbs. The individual C-fibers are then exposed. Electrical stimulation is provided using stimulus electrodes implanted in the foot, and a response is recorded from a single nerve fiber.
09:48
Dissection of Pelvic Autonomic Ganglia and Associated Nerves in Male and Female Rats
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Cited by 9 •
2020
The major pelvic ganglia contain parasympathetic and sympathetic neurons that innervate pelvic organs. Here we describe a dissection method and provide schematics for identification of these ganglia and their associated nerves. These methods can be applied to experimental manipulation of these ganglia in vivo or removal post-mortem for further study.
07:00
Novel Surgical Rodent Model for Studying Neuroma Pain Treatment Options using Targeted Muscle Reinnervation Through the Saphenous Nerve
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2025
This protocol presents a reproducible rat model using sensory nerves to mimic human neuroma pain and assess surgical treatments, offering a valuable tool for translational neuroma research.
FAQs
The surgeon uses the natural planes between fascicles as the pathway for separation, releasing interfascicular tissue rather than cutting directly through the bundles. This approach helps maintain the connective tissue surrounding each fascicle and protects the nerve’s blood supply. Preserving these structures is important because the technique depends on exposing pathways while limiting disruption to the nerve’s organized internal environment.
Fascicles may contain motor, sensory, or mixed nerve pathways, so their arrangement provides information about the functions carried within different parts of a peripheral nerve. Recognizing this organization can help surgeons plan targeted repair or grafting. It also supports selective preservation when an injury or tumor affects only certain pathways and maintaining useful function is a priority.
Magnification allows the surgeon to distinguish small fascicular structures and the planes between them, while fine instruments support controlled release of interfascicular tissue. Together, they make it possible to expose individual pathways without treating the nerve as a single undifferentiated structure. This precision is central to anatomical study and to procedures where selective preservation of motor or sensory function matters.
The process begins with magnified identification of the peripheral nerve and its internal fascicular arrangement. The surgeon then locates the natural planes between fascicles and carefully releases the interfascicular tissue. As distinct bundles become exposed, their motor, sensory, or mixed organization can be evaluated while the surrounding connective tissue and blood supply are preserved as far as the technique allows.
This approach is relevant when surgery requires more selective handling of nerve pathways, including targeted nerve repair, grafting, or management of nerve injuries and tumors. Its value is greatest when preserving particular functions matters. By clarifying fascicular organization, the dissection can support surgical planning rather than relying only on the external appearance of the entire nerve.
Exposing individual fascicles gives researchers a way to study how motor, sensory, and mixed pathways are organized within a peripheral nerve. That anatomical information can inform investigations of nerve regeneration and recovery after damage. In medicine, these observations connect microscopic structure with functional outcomes and may help evaluate how selectively preserved pathways recover over time.