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English Abstract
Journal Article
[The arterial blood supply of the skin flap of the dorsal foot].
Acta Anatomica 1983 April
The dorsal foot skin supplied by the arteria dorsalis pedis the dorsal venous arch, the peroneal sensory nerves and the musculus extensor digitorum brevis is a very good myocutaneous flap. The material on which the study was carried out, consisted of 20 feet from standard cadavers, injected with a mixture of terebenthene and minium through the arteria tibialis anterior. The m. extensor digitorum brevis is 6.1 cm long, 1.7 cm wide, 3.9 mm thick. It is mainly supplied by the a. dorsalis pedis and its branches: the a. tarsea dorsalis (constant) and the a. metatarsea dorsalis (12 of 20 specimens). The average diameter of the a. dorsalis pedis at the upper limit of the m. extensor retinaculum was 2.14 mm and this was chosen as the most proximal limit of the dorsalis pedis flap. The a. tarsea dorsalis was present in all the specimens, with a diameter of 0.95 mm at its origin and a length of 35 mm. On average, this artery divided into four branches to the m. dorsalis pedis. The a. metatarsea dorsalis was present in 12 of 20 specimens, with an average diameter of 0.53 mm and a length of 22 mm. On average, this artery divided into three branches to the m. dorsalis pedis. We drew three lines in the proximal, middle and distal third of each flap design and calculated the sum of arterial branch sections with our lines. We think this provides a reasonable indication of the comparative richness of the cutaneous blood supply in the flap. The mean number of cutaneous branches was 10 in the proximal third, 6.7 in the middle third (13 if branches supplying the m. extensor pedis brevis are included) and 5 in the distal third. The myocutaneous dorsalis pedis arterialized flap can be safely used as an island flap to cover the ankle or heel and as a free flap for palm defects.
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