Microanatomic analyses of extratemporal facial nerve and its branches, hypoglossal nerve, sural nerve, and great auricular nerve

Erdim, İbrahim; Gurbuz, Veysel; Sapmaz, Emrah; Çeti̇n, Selçuk; Gevrek, Fıkret

doi:10.1016/j.bjorl.2021.06.006

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…M3+ recovery may only be achievable when there is reinnervation by a sufficient number of nerve axons. The total cross-sectional axon count for a radial nerve at the mid-humerus level is about 40,000 on average (Gesslbauer et al., 2017); in contrast, a single sural or superficial radial nerve contains 5000–6000 axon on average (Chentanez et al., 2010; Erdim et al., 2021). This indicates that more nerve cables would theoretically increase the number of regenerated axons across the nerve gap.…”

Section: Discussionmentioning

confidence: 99%

Outcomes and prognostic factors for nerve grafting following high radial nerve injury

Zhu

Lei

Pang

et al. 2023

J Hand Surg Eur Vol

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In this study, we examined the prognostic factors affecting outcomes following nerve grafting in high radial nerve injuries. Thirty-three patients with radial nerve injuries at a level distal to the first branch to the triceps and proximal to the posterior interosseous nerve were retrospectively studied. After a follow-up of at least 1 year, 24 patients (73%) obtained M3+ wrist extension, 16 (48%) obtained M3+ finger extension and only ten (30%) obtained M3+ thumb extension. Univariate, multivariate and receiver operating characteristic analyses showed that a delay in the repair of less than 6 months, a defect length of less than 5 cm or when grafted with three or more donor nerve cables achieved better recovery. Number of cables used was related to muscle strength recovery but not time to reinnervation. Nerve grafting for high radial nerve injury achieved relatively good wrist extension but poor thumb extension and is affected by certain prognostic factors. Level of evidence: IV

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Section: Discussionmentioning

confidence: 99%

Outcomes and prognostic factors for nerve grafting following high radial nerve injury

Zhu

Lei

Pang

et al. 2023

J Hand Surg Eur Vol

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The Ansa Hypoglossi: Quantifying Axonal Density of a Donor Nerve for Facial Reinnervation

Laxague

Sahovaler

Fnais

et al. 2024

Facial Plastic Surgery & Aesthetic Medicine

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Histomorphometry of the Sural Nerve for Use as a CFNG in Facial Reanimation Procedures

Kehrer

Hollmann

Klein

et al. 2023

JCM

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Facial palsy (FP) is a debilitating nerve pathology. Cross Face Nerve Grafting (CFNG) describes a surgical technique that uses nerve grafts to reanimate the paralyzed face. The sural nerve has been shown to be a reliable nerve graft with little donor side morbidity. Therefore, we aimed to investigate the microanatomy of the sural nerve. Biopsies were obtained from 15 FP patients who underwent CFNG using sural nerve grafts. Histological cross-sections were fixated, stained with PPD, and digitized. Histomorphometry and a validated software-based axon quantification were conducted. The median age of the operated patients was 37 years (5–62 years). There was a significant difference in axonal capacity decrease towards the periphery when comparing proximal vs. distal biopsies (p = 0.047), while the side of nerve harvest showed no significant differences in nerve caliber (proximal p = 0.253, distal p = 0.506) and axonal capacity for proximal and distal biopsies (proximal p = 0.414, distal p = 0.922). Age did not correlate with axonal capacity (proximal: R = −0.201, p = 0.603; distal: R = 0.317, p = 0.292). These novel insights into the microanatomy of the sural nerve may help refine CFNG techniques and individualize FP patient treatment plans, ultimately improving overall patient outcomes.

show abstract

Microanatomic analyses of extratemporal facial nerve and its branches, hypoglossal nerve, sural nerve, and great auricular nerve

Cited by 3 publications

References 28 publications

Outcomes and prognostic factors for nerve grafting following high radial nerve injury

Outcomes and prognostic factors for nerve grafting following high radial nerve injury

The Ansa Hypoglossi: Quantifying Axonal Density of a Donor Nerve for Facial Reinnervation

Histomorphometry of the Sural Nerve for Use as a CFNG in Facial Reanimation Procedures

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