Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.

Last updated: Jul 18th, 2025

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The flexor retinaculum of the foot runs (posteriorly, on the inside) between the medial malleolus (network of nerve tissues and muscle around the ankle) and the calcaneus (Achilles tendon) and forms sheaths for tendons passing beneath the foot. There is a corresponding flexor retinaculum in the wrist and palm of the hand.

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