ANATOMICAL REVIEW: MUSCLES OF THE FOOT, 2

March 21, 2018 / The Scribbler

We will take a look at Flexor Hallicus Brevis and Quadratus Plantae in this edition of the Anatomical Review. To get a better look at these structures, the muscles from the previous instalment have been removed. I have also removed the tendons of a few muscles from the posterior crus that wrap the ankle and attach to the dorsal side of the foot: Tibialis Posterior, Flexor Digitorum Longus, and Flexor Hallicus Longus (visible in frames 4, 5 & 6 respectively).

Flexor Hallicus Brevis has two distinct heads: Medial (frame 1) and Lateral (frame 2). This muscle functions to flex the great toe. Arising from the Cuneformis bone, Plantar calcaneocuboid ligament and long plantar ligament, it extends along the plantar surface of the great toe. These heads terminate at the medial sesamoid and lateral sesamoid bone of the proximal phalanx.

Quadratus Plantae (frame 3) lies beneath the first layer of foot muscles and assists in flexion of the 2nd-5th digits. It originates at the calcaneus and the long plantar ligament. The two heads bridge the sole of the foot and terminate on the upper and lower surfaces of the tendon of Flexor Digitorum Longus. Variations also include a complete absence of the lateral head, interestingly enough!

We will take a look at the Lumbricals of the foot next time. Stay tuned for more Anatomical reviews, and stay tuned up with regular bodywork!

*Images generated by the FREE Biodigital 3D Human app
#anatomy #anatomicalreview #bodywork

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