An anatomical study of the arterial and nerve supply of the infrahyoid muscles

• Autorzy: Meguid E A , Agawany A.E.
• Języki publikacji: EN

Abstrakty

EN

A precise knowledge of the sources of the arterial and neural supply of the sternohyoid (SH), sternothyroid (STM), and superior belly of omohyoid (OM) is of value to surgeons using the infrahyoid muscles in reconstruction procedures of the head and neck. This study was designed to define the anatomical bases of the variable sources of the arterial and neural supply of these muscles. Fourteen cadavers were unilaterally dissected in the neck region, and the arterial pedicles of these muscles were followed and accurate measurements were taken. For the SH, two arterial pedicles (superior and inferior) originated from the superior thyroid artery ST and supplied the muscle in 57.1% of cases. The inferior pedicle was absent in 42.9% of cases. As regards the STM, one arterial pedicle from the ST supplied its upper end by multiple branches in 57.1% of cases. In 14.3% of cases, branches from the inferior thyroid artery (IT) supplied the STM in addition to its supply from the ST. As regards the OM, two arterial pedicles originated from the ST and supplied its upper and lower ends in 57.1% of cases. The main artery from the ST to the superior belly of OM entered at its superior portion. The ansa cervicalis (AC) innervated the infrahyoid muscles. SH usually had a double nerve supply. In 57.1% of cases, its superior part was innervated by the nerve to the superior belly of OM. Its inferior part received branches from the AC. In 35.7% of cases, its superior part received direct branches from the AC. As regards the STM, in (71.4%) of cases, a common trunk arose from the loop and supplied the inferior part of both the SH and STM. The nerve supply to the superior belly of OM originated from the AC below the loop in 64.3% of cases. These data will be useful for preserving the neuro-vascular supply of the infrahyoid muscles during flap preparation. (Folia Morphol 2009; 68, 4: 233–243)

Słowa kluczowe

EN

anatomy; arterial supply; nerve supply; infrahyoid muscle; muscle; sternohyoid; sternothyroid muscle; omohyoid; superior thyroid

• Wydawca: -
• Czasopismo: Folia Morphologica
• Rocznik: 2009
• Tom: 68
• Numer: 4
• Opis fizyczny: p.233-243,fig.,ref.

Twórcy

autor

Meguid E A

• Alexandria University, Alexandria, Egypt

autor

Agawany A.E.

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