The facial nerve canal in patients with Bell’s palsy: an investigation by high-resolution computed tomography with multiplanar reconstruction

Murai, Aya; Kariya, Shin; Tamura, Kouzou; Doi, Akira; Kozakura, Kenichi; Okano, Mitsuhiro; Nishizaki, Kazunori

doi:10.1007/s00405-012-2253-7

Cited by 25 publications

(27 citation statements)

References 11 publications

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“…The usefulness of 3D CT in the evaluation of the facial nerve canal has been reported. [13,14] The multiplanar reconstruction technique is one of the new imaging techniques for CT. For this purpose, Murai et al [13] examined the CT scans of temporal bone in BP patients with multiplanar reconstruction method and measured the mean diameter of the facial nerve at the level of the labyrinthine, horizontal, and mastoid segments on both sides. It was found that the mean facial canal diameter was significantly narrower at the level of labyrinthine segment on the affected side.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of facial canal and mastoid pneumatization characteristics in Bell's palsy

Korkmaz¹

2019

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Amaç: Bu çalışmada tek taraf lı Bell paralizisi (BP) olan hastalarda karşı tarafa kıyasla etkilenmiş tarafta fasiyal kanalın çapı ve uzunluğu ve mastoid kemiğin havalanması değerlendirildi. Hastalar ve Yöntemler: Ocak 2014 -Kasım 2016 tarihleri arasında tek taraf lı BP nedeniyle polikliniğimize başvuran toplam 30 hasta (16 erkek, 14 kadın; ort. yaş 42.3±12.7 yıl; dağılım, 18-65 yıl) retrospektif olarak incelendi. Hastaların temporal kemik bilgisayarlı tomografi görüntüleri çok kesitli ve üç boyutlu (3D) rekonstrüksiyon yöntemi ile incelendi ve her iki temporal kemiğin mastoid segment, labirintin segment ve foramen stilomastoideum düzeyinde fasiyal kanal çapları ölçüldü. Mastoid segmentte fasiyal kanal uzunluğu da ölçüldü. Üç boyutlu kesitlerde her bir mastoid hücre tek tek ölçülerek toplam hücre yüzey alanı hesaplandı ve mastoid havalanma düzeyi belirlendi. Bulgular: Etkilenen tarafta fasiyal kanalın ortalama çapı mastoid segment, labirintin segment ve foramen stilomastoideum düzeyinde istatistiksel olarak anlamlı düzeyde daha dardı (p=0.001). Mastoid segment boyunca ortalama fasiyal kanal uzunluğu da, etkilenen tarafta istatistiksel olarak anlamlı düzeyde uzundu (p=0.043). Mastoid kemik havalanma düzeyi açısından her iki taraf arasında istatistiksel olarak anlamlı bir farklılık yoktu (p=0.359). Sonuç: Çalışma sonuçlarımız fasiyal kanal çapının BP etiyolojisinde risk faktörü olarak özellikle ilintili olduğunu göstermektedir. Mastoid segment boyunca fasiyal kanal uzunluğu da bir diğer risk faktörü olarak kabul edilebilir. Bununla birlikte, mastoid kemik havalanma düzeyi ile BP arasında anlamlı bir ilişki izlenmemiştir. Anahtar sözcükler: Bell paralizisi, fasiyal sinir, mastoid, üç boyutlu bilgisayarlı tomografi. ABSTR ACTObjectives: This study aims to evaluate the facial canal diameter and length and mastoid bone pneumatization on the affected side, compared to the contralateral side, in patients with unilateral Bell's palsy (BP). , a total of 30 patients (16 males, 14 females; mean age 42.3±12.7 years; range, 18 to 65 years) who were admitted to our outpatient clinic with unilateral BP were retrospectively analyzed. The temporal bone computed tomography images of the patients were examined by multislice and three-dimensional (3D) reconstruction method and the facial canal diameters were measured in the mastoid segment, labyrinthine segment, and foramen stylomastoideum level in both temporal bones. The length of the facial canal was also measured along the mastoid segment. Using the 3D images, each mastoid cell volume was measured separately to calculate the total cell surface area and to identify the level of mastoid pneumatization. Results:The mean facial canal diameter was statistically significantly narrower in the mastoid segment, labyrinthine segment, and foramen stylomastoideum level on the affected side (p=0.001). The mean facial canal length was also statistically significantly longer along the mastoid segment on the affected side (p=0.043). There was no statistically significant difference in the level o...

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Section: Discussionmentioning

confidence: 99%

Evaluation of facial canal and mastoid pneumatization characteristics in Bell's palsy

Korkmaz¹

2019

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“…In the study of Murai et al 16 patients with unilateral BP were included. Bilateral MPR images of bilateral temporal bones of patients were formed [12]. The diameters of LS, TS and MS of facial canal in the temporal bones of the sides with paralysis and healthy sides were measured with these images.…”

Section: Discussionmentioning

confidence: 99%

The effect of width of facial canal in patients with idiopathic peripheral facial paralysis on the development of paralysis

Eksi

Akbay

Bayaroğulları

et al. 2014

Eur Arch Otorhinolaryngol

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The aim of this prospective study is to investigate whether the possible stenosis due to anatomic variations of labyrinthine segment (LS), tympanic segment (TS) and mastoid segment (MS) of the facial canal in the temporal bone is a predisposing factor in the development of paralysis. 22 patients with idiopathic peripheral facial paralysis (IPFP) were included in the study. Multi-slice computed tomography (MSCT) with 64 detectors was used for temporal bone imaging of the patients. Reconstruction images in axial, coronal and sagittal planes were created in workstation computers from the captured images. The diameters and lengths of LS, TS and MS of the facial canal were measured. The mean values of LD, ND and SL of LS were 1.31 ± 0.39, 0.91 ± 0.27, 4.17 ± 0.48 in patient group and 1.26 ± 0.29, 0.95 ± 0.21, 4.60 ± 1.36 in control group, respectively. The mean values of LD, ND and SL of TS were 1.11 ± 0.22, 0.90 ± 0.14, 12.63 ± 1.47 in patient group and 1.17 ± 0.23, 0.85 ± 0.24, 12.10 ± 1.79 in control group, respectively. The mean values of LD, ND and SL of MS were 1.80 ± 0.30, 1.44 ± 0.29 vs. 14.3 ± 1.90 in patient group 1.74 ± 0.38, 1.40 ± 0.29, 14.15 ± 2.16 in control group, respectively. The measurements of the parameters of all three segments in patient group and control group were similar. Similar results between patient and control group were obtained in this study investigating the effect of stenosis in facial canal in the development of IPFP.

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“…31,32 In cases of longstanding paralysis, the facial nerve was reduced to a shrunken strand. 35,36 Anatomy The facial nerve runs through the temporal bone. 35,36 Anatomy The facial nerve runs through the temporal bone.…”

Section: Pathophysiologymentioning

confidence: 99%

Antiviral agents convey added benefit over steroids alone in Bell's palsy; decompression should be considered in patients who are not recovering

Brennan

Martens

2015

J. Laryngol. Otol.

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The facial nerve canal in patients with Bell’s palsy: an investigation by high-resolution computed tomography with multiplanar reconstruction

Cited by 25 publications

References 11 publications

Evaluation of facial canal and mastoid pneumatization characteristics in Bell's palsy

Evaluation of facial canal and mastoid pneumatization characteristics in Bell's palsy

The effect of width of facial canal in patients with idiopathic peripheral facial paralysis on the development of paralysis

Antiviral agents convey added benefit over steroids alone in Bell's palsy; decompression should be considered in patients who are not recovering

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