Nerve Gap Grafting
Nerve Gap Grafting - Related Videos
20:14
Combining Peripheral Nerve Grafting and Matrix Modulation to Repair the Injured Rat Spinal Cord
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Cited by 21 •
2009
Traumatic injury to the spinal cord disrupts communication with the brain. To restore lost connectivity we utilize a peripheral nerve graft to provide a substratum for regenerating fibers in combination with neurotrophic factors and matrix-modulating enzymes to remove inhibitory molecules to promote long distance growth.
03:13
Construction of a Composite Regenerative Peripheral Nerve Interface in a Rat Model of Nerve Injury
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2025
Source: Svientek, S. R., et al. Fabrication of the Composite Regenerative Peripheral Nerve Interface (C-RPNI) in the Adult Rat. J. Vis. Exp. (2020).This video demonstrates the surgical construction of a composite regenerative peripheral nerve interface (C-RPNI) in a rat model of peripheral nerve injury. The procedure involves attaching a transected peroneal nerve to a muscle graft and overlaying it with a dermal skin graft to promote nerve regeneration. Over time, motor and sensory neurons...
01:37
Gap Junctions
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2026
Multicellular organisms employ a variety of ways for cells to communicate with each other. Gap junctions are specialized proteins that form pores between neighboring cells in animals, connecting the cytoplasm between the two, and allowing for the exchange of molecules and ions. They are found in a wide range of invertebrate and vertebrate species, mediate numerous functions including cell differentiation and development, and are associated with numerous human diseases, including cardiac and...
04:16
Stromal Vascular Fraction-Enriched Fat Grafting for the Management of Symptomatic Neuromas
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2025
Source: Zimmermann, S., et.al. Stromal Vascular Fraction-enriched Fat Grafting for the Treatment of Symptomatic End-neuromata. J. Vis. Exp. (2017)This video demonstrates the surgical procedure for neurolysis and stromal vascular fraction (SVF)-enriched fat grafting in the management of symptomatic neuroma. Neurolysis removes adhesion tissue to restore nerve gliding, while SVF-enriched fat grafting is applied around the nerve to create a protective barrier, support nerve healing, and enhance...
03:53
An Orthotopic Sciatic Nerve Xenograft for Neurofibromatosis Type 1 Neurofibromas
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2025
Neurofibromatosis type 1 (NF1) leads to benign peripheral nerve sheath tumors (neurofibromas) that require a specific nerve microenvironment for growth. An optimized orthotopic xenograft model was developed, using intraneural injection of human Schwann cells into NSG mice. This model recapitulates human neurofibromas and provides a valuable platform to evaluate therapeutic strategies.
FAQs
Autografts can contribute both Schwann cells and native extracellular matrix, creating a biologically supportive environment as regenerating axons extend toward their targets. This combination adds cellular and structural guidance to the physical continuity provided by the graft, which is why autografts serve as an important comparison standard in peripheral nerve regeneration research.
These alternatives are evaluated because they may provide a guidance pathway while reducing donor-site complications associated with harvesting an autograft. Comparisons examine whether synthetic conduits or tissue-engineered materials can adequately support axon extension and recovery of sensory and motor function while offering a less burdensome repair strategy.
Recovery of sensory and motor function provides the central functional context for evaluating a repair. Researchers also consider whether the graft or conduit supports regenerating axons as they progress toward their targets. These outcomes help distinguish a material that merely spans the injury from one that provides a useful regenerative pathway.
The repair begins with a peripheral nerve injury in which the separated ends cannot be directly reconnected. A selected graft or conduit is then positioned to span the missing segment and provide structural guidance. Depending on the research or treatment strategy, the bridge may be biological, synthetic, or tissue engineered.
The choice depends on the repair strategy being investigated and the balance between biological support and donor-site effects. Autografts can provide Schwann cells and native extracellular matrix, whereas synthetic conduits and tissue-engineered materials are studied as alternatives that may reduce donor-site complications while still supporting regeneration across the injury.
In neuroscience, these repairs provide a framework for studying peripheral nerve regeneration after traumatic injury. Researchers compare biological grafts, synthetic conduits, and tissue-engineered materials to determine how different bridges support axon growth and contribute to restoration of sensory and motor function. The work connects surgical repair with experimental analysis of regenerative mechanisms.