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: Dec 9th, 2024

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The plantaris tendon inserts the plantaris muscle at the calcaneus' posterior surface. This plantaris muscle is a weak flexor of the leg at the knee joint and a plantar flexor of the foot at the ankle joint. It is a rudimentary muscle, which is sometimes compared to the one in the forearm (see palmaris longus).

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