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Surgery and Behavioral Testing in the Tibial Neuroma Transposition Model in Rats
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Time course of traumatic neuroma development
Karla M C Oliveira1, Lukas Pindur1, Zhihua Han1
1Frankfurt Initiative for Regenerative Medicine, JW Goethe-University, Frankfurt/Main, Germany.
Plos One
|July 17, 2018
Summary
This study identified six stages of nerve and neuroma development after amputation in rats. Early intervention before 28 days post-amputation may improve neuroma treatment strategies.
Area of Science:
- Regenerative Medicine
- Neuroscience
- Surgical Pathology
Background:
- Neuromas are a common complication following amputation.
- Current treatment strategies often fail to prevent or effectively treat established neuromas.
Purpose of the Study:
- To characterize the morphological stages of neuroma development post-amputation.
- To identify potential therapeutic windows for intervention before neuroma formation.
Main Methods:
- Rat forelimb amputation model (n=30 Sprague Dawley rats).
- Limb stumps collected at 3, 7, 28, 60, and 90 Days Post Amputation (DPA).
- Histological and immunohistochemical (neurofilament staining) analysis of nerve and neuroma morphology.
Main Results:
- Identified six distinct morphological stages: normal nerve, degenerating axons, axonal sprouts, unorganized axon bundles, axonal growth into muscle, and neuroma formation.
- Degenerating axons observed from 7-90 DPA.
- Unorganized axon growth and early neuroma signs visible by 28 DPA, with frank neuroma formation in all samples by 90 DPA.
Conclusions:
- Six histological stages of nerve regrowth and neuroma development were identified.
- Early signs of abnormal regrowth and neuroma formation are evident by 28 DPA.
- Targeting interventions to the initial stages of neuroma development (before 28 DPA) may enhance treatment efficacy.
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