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Czasopisma help

  1. 2 Folia Morphologica

Autorzy help

  1. 2 Agawany A. E.

  2. 2 Meguid E. A.

Lata help

  1. 1 2010

  2. 1 2009

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1

Mode of insertion of the abductor hallucis muscle in human feet and its arterial supply

100%
Agawany A. E., Meguid E. A.
Folia Morphologica
|
2010
|
tom 69
|
nr 1
The abductor hallucis flap is commonly used as a pedicled flap (distally or proximally based) in the management of ankle, heel, and mid-foot lesions, where it is ideally used for closing defects. This study investigates the anatomical details of this muscle regarding its various forms of insertion and its arterial supply in 15 cadaveric feet. Four types of insertion could be distinguished: type A, insertion at the proximal phalanx of the big toe (46.7%); type B, insertion by two slips into the base of the proximal phalanx and the sesamoid bone (33.3%); type C, insertion at the sesamoid bone (6.7%); And type D, the insertion is divided into superficial tendinous and deep fleshy parts which are attached to the base of the proximal phalanx and to the metatarsophalangeal joint capsule of the big toe, respectively (13.3%). As regards the arterial supply, three patterns were noticed: pattern A (40%) where the medial plantar artery (MPA) is divided into superficial and deep branches that supplied the muscle; pattern B (53.3%) where the MPA failed to produce a deep branch but instead continued as the superficial branch supplying the two ends of the muscle; and pattern C (6.6%) where the MPA continued as a deep branch supplying the muscle. A superficial branch of MPA provided a branch to the abductor hallucis muscle from its proximal part. In two specimens (13.3%), the lateral plantar artery shared in the supply of the most proximal part of the muscle. These results can be useful in determining the appropriate flap design based on the abductor hallucis type of insertion and the pattern of its arterial supply in the patients. (Folia Morphol 2010; 69, 1: 54–61)
2

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

100%
Meguid E. A., Agawany A. E.
Folia Morphologica
|
2009
|
tom 68
|
nr 4
233-243
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)
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