Morphology of the mandibulo‐stylohyoid ligament in human adults

Shimada, Kazuyuki; Gasser, Raymond F.

doi:10.1002/ar.1092220214

Cited by 13 publications

(6 citation statements)

References 3 publications

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“…Macalister (1875) stated that the second head may send some or all fibers into the stylohyoid or occasionally pass separately into the tongue, forming a myloglossus, as described by Hallett (1849) and Wood (1867). Shimada and Gasser (1988) noted that the connective tissue band or membrane known as the mandibulo‐stylohyoid ligament was found between the mandibular angle and the stylohyoid ligament in all specimens examined.…”

Section: Discussionmentioning

confidence: 96%

Rare case of myloglossus in Japanese cadaver: Anatomical and developmental considerations

Nakajima

Nakamura

2008

Anat Sci Int

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The styloglossus is one of the three extrinsic muscles of the tongue; it enters the tongue from behind. During human dissection practice for dental students at the Showa University School of Dentistry in 2006, the authors observed anomalous muscle arising from the inner surface of the mandibular angle and inserting into the tongue bilaterally. This muscle was termed myloglossus by Wood. On the right side, the myloglossus was accompanied by a weak rudimentary styloglossus, but the styloglossus was absent on the left side. The hypoglossal nerve innervated the myloglossus bilaterally, and a small branch of mandibular nerve also entered the muscle on the left side. The styloglossus develops from the styloid process and the mandibular angle as a bicipital muscle, but the segment attached to the mandibular angle generally atrophies during development. The present anomalous muscle was thought to represent persistence of this muscle bundle arising from the inner surface of the mandibular angle. The innervation of the innermost part of the left myloglossus by the mandibular nerve was explained by persistence of a vestigial nerve supplying a small muscle bundle originating from the tensor veli palatini, which had fused to the myloglossus.

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Section: Discussionmentioning

confidence: 96%

Rare case of myloglossus in Japanese cadaver: Anatomical and developmental considerations

Nakajima

Nakamura

2008

Anat Sci Int

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“…6) (Hollinshead, 1969;Du Brul, 1980;Balbuena et al, 1997). Stylohyoid and stylomandibular ligaments help regulate the movements of the mandible, the hyoid bone, the tongue and the pharynx (Shimada and Gasser, 1988).…”

Section: Anatomy and Embryologymentioning

confidence: 99%

Eagle's syndrome: A review of the literature

et al. 2009

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Eagle's syndrome represents symptoms brought on by compression of regional structures by elongation of the styloid process or ossification of the stylohyoid or stylomandibular ligaments. Watt Eagle described it for the first time in 1937, dividing it into two subtypes: the "classic syndrome" and the "stylo-carotid artery syndrome." Many theories have been put forth regarding its pathogenesis. Depending on the underlying pathogenetic mechanism and the anatomical structures compressed or irritated by the styloid process, symptoms vary greatly, ranging from cervicofacial pain to cerebral ischemia. The syndrome generally follows tonsillectomy or trauma. Diagnosis is confirmed by radiological findings. Palpation of the styloid process in the tonsillar fossa and infiltration with anesthesia are also used in making the diagnosis. The treatment is primarily surgical; however, some conservative treatments have also been used. The current literature on Eagle's syndrome is reviewed, highlighting its often underestimated frequency and its clinical importance.

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“…Another ligament which courses between the styloid process and the angle of the mandible is called the mandibulo-stylohyoid ligament (121,122). The suspensory apparatus of the tongue, the hyoid bone and the thyroid cartilage are supported by the three muscles, which also assist in swallowing.…”

Section: Embryology and Anatomymentioning

confidence: 99%

Elongated Styloid Process and Eagle's Syndrome

et al. 1995

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A controversial entity, Eagle's syndrome, is reviewed. After an anatomical description of the maxillo-vertebro-pharyngeal region we summarize the causative, diagnostic and therapeutic aspects of the syndrome. Two different conditions are often reported as Eagle's syndrome: one characterized by dysphagia and unilateral pharyngeal pain radiating to the ear and worsened by swallowing; the other characterized by pain in the head and neck region due to compression of the neurovascular structure by an elongated styloid process. The latter also includes typical cranial neuralgias (such as glossopharyngeal neuralgia) and carotidynia. We believe that the term "Eagle's syndrome" is legitimate only in the first case and in those "atypical" painful head and neck conditions related to an elongated styloid process and relieved by styloidectomy. We believe Eagle's syndrome deserves consideration in the International Headache Classification.

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Morphology of the mandibulo‐stylohyoid ligament in human adults

Cited by 13 publications

References 3 publications

Rare case of myloglossus in Japanese cadaver: Anatomical and developmental considerations

Rare case of myloglossus in Japanese cadaver: Anatomical and developmental considerations

Eagle's syndrome: A review of the literature

Elongated Styloid Process and Eagle's Syndrome

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