Clinical anatomy of the chorda tympani: a systematic review

McManus, Lauren J.; Dawes, P. J. D.; Stringer, Mark D.

doi:10.1017/s0022215111001873

Cited by 57 publications

(38 citation statements)

References 67 publications

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“…To the best of the authors' knowledge, study of the CTN has been limited to cadaveric studies. Our classification of the CTN has clinical relevance as the posterior canaliculus is prone to iatrogenic injury during neurotologic procedures, and the anterior canaliculus is at risk for involvement in traumatic petrotympanic fractures and neighboring TMJ pathology [1,6,9,10].…”

Section: Discussionmentioning

confidence: 99%

“…The chorda tympani nerve (CTN) is the largest intra-temporal branch of the facial nerve, and primarily functions to supply both taste sensation to the anterior twothirds of the tongue and parasympathetic innervation of submandibular and sublingual salivary glands [1][2][3][4][5]. Iatrogenic injury to the CTN is a well-recognized complication of various otologic procedures, which is in part due to its variable course and limited pre-operative visualization [6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High resolution CT study of the chorda tympani nerve and normal anatomical variation

Singh¹,

Hsu²,

Kwan³

et al. 2015

Jpn J Radiol

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High resolution CT study of the chorda tympani nerve and normal anatomical variation

Singh¹,

Hsu²,

Kwan³

et al. 2015

Jpn J Radiol

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“…[1] The chorda tympani is vulnerable to injury during a wide range of surgical procedures such as surgeries are myringoplasty, ossiculoplasty, cholesteatoma surgery, bony meatoplasty, removal of bone to access retraction pockets involving the facial recess, otosclerosis etc. [2] Numerous factors influence whether injury to the chorda tympani causes symptoms, including the extent of injury, type of surgery, age of the patient, anatomical variables and subjective adaptation.…”

Section: Discussionmentioning

confidence: 99%

A Very Rare Anatomical Variation of Chorda Tympani Nerve

Bhise¹,

Patil²,

Hippergekar³

2014

IOSRJDMS

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“…The CTN leaves the facial nerve and runs through an aerial space of the middle ear [1]. Thus, it is frequently severed during middle ear surgery for some diseases involving otitis media and cholesteatoma, etc.…”

Section: Introductionmentioning

confidence: 99%

Regeneration of the Nerves in the Aerial Cavity with an Artificial Nerve Conduit -Reconstruction of Chorda Tympani Nerve Gaps-

et al. 2014

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Objectives/HypothesisDue to its anatomical features, the chorda tympani nerve (CTN) is sometimes sacrificed during middle ear surgery, resulting in taste dysfunction. We examined the effect of placing an artificial nerve conduit, a polyglycolic acid (PGA)-collagen tube, across the gap in the section of the resected chorda tympani nerve (CTN) running through the tympanic cavity.MethodsThe CTN was reconstructed with a PGA-collagen tube in three patients with taste disturbance who underwent CTN resection. To evaluate the effect of the reconstruction procedure on the patients' gustatory function, we measured the patients' electrogustometry (EGM) thresholds. The patients were followed-up for at least two years.ResultsGustatory function was completely restored in all of the patients after the reconstruction. The patients' EGM thresholds exhibited early improvements within one to two weeks and had returned to their normal ranges within three months. They subsequently remained stable throughout the two-year follow-up period. In a patient who underwent a second surgical procedure, it was found that the PGA-collagen tube used in the first surgical procedure had been absorbed and replaced by new CTN fibers with blood vessels on their surfaces.ConclusionThese results suggest that reconstruction of the CTN with an artificial nerve conduit, a PGA-collagen tube, allows functional and morphological regeneration of the nerve and facilitates the recovery of taste function. PGA-collagen tubes might be useful for repairing CTNs that are resected during middle ear surgery. Further research is required to confirm these preliminary results although this is the first report to describe the successful regeneration of a nerve running through an aerial space.

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Clinical anatomy of the chorda tympani: a systematic review

Abstract: A detailed understanding of the anatomy of the chorda tympani may help to reduce the risk of iatrogenic injury during head, neck and middle-ear surgery, and to explain the variable consequences of such injury.

Cited by 57 publications

References 67 publications

High resolution CT study of the chorda tympani nerve and normal anatomical variation

High resolution CT study of the chorda tympani nerve and normal anatomical variation

A Very Rare Anatomical Variation of Chorda Tympani Nerve

Regeneration of the Nerves in the Aerial Cavity with an Artificial Nerve Conduit -Reconstruction of Chorda Tympani Nerve Gaps-

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