目的：探讨第一跖背动脉的超声探测方法学及其临床应用价值。
Objective: to study methodology of ultrasonography of the first metatarsal dorsal artery (FMDA) and to evaluate its clinical value.
第一跖底动脉出现率为92%，口径与第一跖背动脉有互补关系。
The FPA was present in 92% of the series, and the internal diameter has complemented relationship with the FDMA.
1987年以来，应用第一跖背动脉逆行岛状皮瓣治疗4例，结果满意。
Since 1987, we had used the reversed first dorsal metatarsal artery island flap in 4 cases, the results were satisfactory.
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