epineurium


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Related to epineurium: endoneurium

epineurium

[‚ep·ə′nu̇r·ē·əm]
(anatomy)
The connective-tissue sheath of a nerve trunk.
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The epineurium itself provides less donor site morbidity and the appropriate microenvironment permitting nerve regeneration.
Adjacent to the perineurium was observed epineurium which also consists of connective tissue but not modeled (Figures 1(a) and 1(b)).
In other words, the problem in CTS is not nerve fibers themselves but fibrosis developed on epineurium and perinerium, the connective tissues surrounding the nerve.
The large peripheral nerves are composed of Schwann cell-axon complexes, supported and protected by 3 connective-tissue sheaths: endoneurium, perineurium, and epineurium.
Briefly, nerves were removed, stripped of epineurium, cut into thin slices from adult nerves and cultured in DMEM medium with 10% fetal bovine serum (FBS) for 14 days, changing the medium every 3 days.
Intraoperatively, multiple masses were found to be adherent to the facial nerve epineurium (figure 2, A).
80) The blood vessels that supply the nerves travel in the epineurium.
If needed, epineurium or lamellar sheath was released, then the transverse carpal ligament was stretched transversally and the extended ligament was sutured.
With reference of the end-to-side anastomosis without an epineural window, some authors (5) believe that the mere fact of performing sutures in the epineurium will create traumatic windows that allow nerve fascicles to cross them.
The ends of the radial nerve were inserted about 3 mm into the collagen tube, and the collagen tube was sewn to the epineurium of the ends of the radial nerve (Figure 1E).
2,3) Normal perineurial cells constitute the perineurium, a protective barrier situated between the epineurium and endoneurium layers of the nerves that surround both myelinated and unmyelinated axon-Schwann cell complexes of peripheral nerve fascicles.
The two electrodes and a securing clip are attached gently to the nerve, sparing the epineurium, and without squeezing the nerve fibers (see Figures 3a-c).