ABFAS Boards – Rearfoot and Forefoot Practice Test

An angiosome is a block of tissue supplied by a single named artery and its branches. In the foot, the major arterial supply is organized into six distinct territories: the dorsal foot region supplied by the dorsalis pedis; the plantar aspect split into medial plantar, central plantar (fed by the deep plantar arch), and lateral plantar territories; and the heel supplied by the medial and lateral calcaneal branches. This six-territory map is the standard framework clinicians use for wound assessment, planning revascularization, and understanding healing potential.

So six is the best answer because it reflects the common clinical division of the foot into six vascular territories. Describing fewer would miss a territory (for example the dorsal and heel regions), while more extensive subdivision (eight or ten) goes beyond the standard practical map used in exams and everyday practice.