Arterial blood supply to the infrahyoid muscles: An anatomical study

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Abstract
The arterial supply to the infrahyoid strap muscles originating from the superior thyroid artery (STA), the inferior thyroid artery (ITA), and the internal mammary artery (IMA), also called the internal thoracic artery, were investigated. Intraarterial silicone dye was injected into eight fresh cadavers followed by dissections. The blood supply to the infrahyoid muscles was found to be segmented in nature with the dividing line at the level of the cricoid ring. No axial pattern of vascularization could be demonstrated within the strap muscles. The skin overlying these muscles is supplied by tributaries arising from the above‐described arteries. Application of the information gathered is discussed in consideration of local myocutaneous and myoosseous flaps for reconstructive surgery, particularly of the larynx and trachea.

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