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Symmetrical anatomical variant of the anterior belly of the digastric muscle: clinical implications

100%

Buffoli B., Lancini D., Ferrari M., Belotti F., Nicolai P., Tschabitscher M., Rezzani R., Rodella L. F.

Folia Morphologica

2016

tom 75

nr 1

The digastric muscle is an important surgical landmark. Several anatomical variants of the digastric muscle are reported in literature and, in particular, the presence of accessory anterior bellies of the muscle is not uncommon. Here, an unreported symmetrical variant of the digastric muscle was found during a dissection of the suprahyoid region. The dissection showed digastric muscles with an accessory anterior belly, which originated from the anterior belly of muscles in proximity and anteriorly to the intermediate tendon. The accessory bellies were fused together on the midline and were attached with a unique tendon to the inner surface of the mental symphysis. These muscles completely filled the submental triangle. This unreported anatomical variant could be considered an additional contribution to description of the anatomical variants of the digastric muscle, with several implications in head and neck pathology, diagnosis and surgery. (Folia Morphol 2016; 75, 1: 112–116)

The myloglossus in a human cadaver study: common or uncommon anatomical structure?

100%

Buffoli B., Ferrari M., Belotti F., Lancini D., Cocchi M. A., Labanca M., Tschabitscher M., Rezzani R., Rodella L. F.

Folia Morphologica

2017

tom 76

nr 1

Background: Additional extrinsic muscles of the tongue are reported in literature and one of them is the myloglossus muscle (MGM). Since MGM is nowadays considered as anatomical variant, the aim of this study is to clarify some open questions by evaluating and describing the myloglossal anatomy (including both MGM and its ligamentous counterpart) during human cadaver dissections. Materials and methods: Twenty-one regions (including masticator space, sublingual space and adjacent areas) were dissected and the presence and appearance of myloglossus were considered, together with its proximal and distal insertions, vascularisation and innervation. Results: The myloglossus was present in 61.9% of cases with muscular, ligamentous or mixed appearance and either bony or muscular insertion. Facial artery provided myloglossal vascularisation in the 84.62% and lingual artery in the 15.38%; innervation was granted by the trigeminal system (buccal nerve and mylohyoid nerve), sometimes (46.15%) with hypoglossal component. Conclusions: These data suggest us to not consider myloglossus as a rare anatomical variant. (Folia Morphol 2017; 76, 1: 74–81)

Ograniczanie wyników

2 Folia Morphologica

2 Belotti F.

2 Buffoli B.

2 Ferrari M.

2 Lancini D.

2 Rezzani R.

2 Rodella L. F.

2 Tschabitscher M.

1 Cocchi M. A.

1 Labanca M.

1 Nicolai P.

1 2017

1 2016

Wyniki wyszukiwania

Symmetrical anatomical variant of the anterior belly of the digastric muscle: clinical implications

The myloglossus in a human cadaver study: common or uncommon anatomical structure?