Clinicoanatomical study of free tissue transfer. Part I. The jejunal vessels.:Part I The jejunal vessels
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Jejunal vessels which play an important role in vascular anastomoses in free jejunal tissue transfer were examined clinicoanatomically. This study included morphological and morphometrical examinations of the jejunal artery and the jejunal vein. The jejunal artery branches into the primary arcade, which is formed together with branches of the jejunal veins. Mural trunk branches, venous valves, the inner diameters of jejunal vessels, and the lengths of vessels were studied. The following summarizes the results of these observations:<BR>1. Morphological examination: 1) Medial branch Type-a (the jejunal artery branching into the primary arcade) accounted for 50%. 2) Medial branch Type-a (the jejunal veins joining to form the primary arcade) accounted for 50%. 3) The mural trunk branches pass through the antimesenteric area to the mesenteric area. 4) No venous valves were observed.<BR>2. Morphometric examination: 1) The mean inner diameter of the jejunal arteries was 1.4±0.5mm at 5mm distal from the jejunal artery junction. 2) The mean inner diameter of the jejunal vein was 1.8±0.7mm at 5mm distal from the junction of the vessels, the site used for vascular anastomosis (the site which corresponds to the largest diameter of the jejunal arteries), and 3.2±1.0mm at 5mm distal from the junction of the jejunal artery. 3) The mean length of artery that could be used as a vascular pedicle was 13.1±1.5cm. 4) The mean length of vein that could be used as a vascular pedicle was 13.0±1.5cm.
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関連論文
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