Which arterial anastomosis forms the deep plantar arch of the foot?

• A Lateral plantar artery with the deep plantar branch of the dorsalis pedis artery ✓
• B Medial plantar artery with the arcuate artery
• C Lateral plantar artery with the perforating branch of the fibular artery
• D Medial plantar artery with the deep plantar branch of the dorsalis pedis artery

Explanation

The deep plantar arch lies against the metatarsal bases and is completed by the union of the lateral plantar artery (from the posterior tibial) with the deep plantar branch of the dorsalis pedis, which reaches the sole through the first interosseous space. This anastomosis links the anterior and posterior tibial systems. The medial plantar artery is smaller and takes no part in forming the arch.

Reference: Moore's Clinically Oriented Anatomy, 8th ed.

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