epineurium


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Related to epineurium: endoneurium

epineurium

 [ep″ĭ-noor´e-um]
the sheath of a peripheral nerve. adj., adj epineu´rial.

ep·i·neu·ri·um

(ep'i-nū'rē-ŭm), [TA]
The outermost supporting structure of peripheral nerve trunks, consisting of a condensation of areolar connective tissue; subdivided into those layers that surround the whole nerve trunk (epifascicular epineurium), and those layers that extend between the nerve fascicles (interfascicular epineurium). With the endoneurium and perineurium, the epineurium comprises the peripheral nerve stroma.
[epi- + G. neuron, nerve]

epineurium

/epi·neu·ri·um/ (-noor´e-um) the outermost layer of connective tissue of a peripheral nerve.epineu´rial

epineurium

(ĕp′ə-no͝or′ē-əm, -nyo͝or′-)
n. pl. epi·neuria (-no͝or′ē-ə, -nyo͝or′-)
The thick sheath of connective tissue surrounding a nerve trunk.

ep′i·neu′ri·al adj.

ep·i·neu·ri·um

(ep'i-nūr'ē-ŭm) [TA]
The outermost supporting structure of peripheral nerve trunks, consisting of a condensation of areolar connective tissue; subdivided into those layers that surround the whole nerve trunk (epifascicular epineurium), and those layers that extend between the nerve fascicles (interfascicular epineurium). With the endoneurium and perineurium, the epineurium comprises the peripheral nerve stroma.
[epi- + G. neuron, nerve]

epineurium

The connective tissue sheath of a nerve.

epineurium

connective tissue enclosing a nerve trunk and containing/supporting vasae nervosum and vasorum

ep·i·neu·ri·um

(ep'i-nūr'ē-ŭm) [TA]
The outermost supporting structure of peripheral nerve trunks, consisting of a condensation of areolar connective tissue; subdivided into those layers that surround the whole nerve trunk (epifascicular epineurium), and those layers that extend between the nerve fascicles (interfascicular epineurium). With the endoneurium and perineurium, the epineurium comprises the peripheral nerve stroma.
[epi- + G. neuron, nerve]

epineurium

the sheath of a peripheral nerve.
References in periodicals archive ?
Epineural repair involves placing sutures in the epineurium, whereas fascicular repair attempts to align individual groups of fascicles together.
Table 1 Nerve Injury Classifications Prognosis for Sunderland Spontaneous Seddon Grade Grade Structures Injured Recovery Neuropraxia 1 Myelin Full Axonotmesis 2 Myelin, Axons Functional 3 Myelin, Axons, Endoneurium Incomplete 4 Myelin, Axons, Endoneurium, None Perineurium Neurotmesis 5 Myelin, Axons, Endoneurium, None Perineurium, Epineurium Table 2 MRC Grades of Muscle Strength Grade Motor Function 0 No movement or contraction 1 Trace movement or fasciculations 2 Active motion with gravity eliminated 3 Active motion against gravity only 4 Active motion against some resistance 5 Full strength Table 3 Summary of Incidences of Lower Extremity Nerve Injuries Traumatic Iatrogenic Femoral Nerve Acetabulum THA overall: 0.
Epineurial repair involves aligning the nerve ends and placing sutures through the epineurium only.
It is important to try to suture only the epineurium and not pass the needle and suture through the fascicles, as this can create more damage and scarring, yielding a poorer result.
Extirpation of the tumor was performed via a longitudinal access incision through the epineurium and careful separation of the nerve and tumor (Figure 3).
Repair of the epineurium is not required and the longitudinally split muscle is repaired loosely over the nerve.
The epineurium is transected and spontaneous recovery is negligible, therefore, surgical intervention is indicated.
If the epineurium and fascicles are neatly divided and have minimal contusion, primary repair without tension can be performed.
When a neurilemmoma arises from a major peripheral nerve, Seddon recommends enucleation by incision of the epineurium and dissection between the tumor capsule and the nerve fasciculi.
The next outermost layer is the epineurium, a dense white covering of collagen and elastic fibers.