. Cunningham's Text-book of anatomy. Anatomy. 432 THE MUSOULAE SYSTEM. The Muscles in the Sole of the Foot. The muscles in the sole of the foot are divisible into four layers placed beneath the plantar aponeurosis. The first layer includes the abductor hallucis, flexor digitorum brevis, and abductor dioiti quinti. The second layer consists of the lumbricales and quadratus plantte, together with the tendons of the flexor hallucis longus and flexor digitorum longus. The third layer comprises the flexor hallucis brevis, adductor hallucis, and Abductor digiti quinti (origin) Quadratus plantae (ori
. Cunningham's Text-book of anatomy. Anatomy. 432 THE MUSOULAE SYSTEM. The Muscles in the Sole of the Foot. The muscles in the sole of the foot are divisible into four layers placed beneath the plantar aponeurosis. The first layer includes the abductor hallucis, flexor digitorum brevis, and abductor dioiti quinti. The second layer consists of the lumbricales and quadratus plantte, together with the tendons of the flexor hallucis longus and flexor digitorum longus. The third layer comprises the flexor hallucis brevis, adductor hallucis, and Abductor digiti quinti (origin) Quadratus plantae (origin) Long plantar ligament Plantar calcaneo-cuboid Tibialis posterior (part of insertion)! Peronaeus brevis (insertion) Flexor digiti quinti brevis (origin) Adductor hallucis (origin of oblique head). Flexor digitorum brevis (origin) Abductor hallucis (origin) Attachments of plantar calcaneo- navicular ligament Flexor hallucis brevis (origin) Tibialis posterior (part of insertion) Peroneeus longus (insertion) Tibialis anterior (insertion) Fig. 386.—Muscle-Attachments to Left Tarsus and Metatarsus (Plantar Aspect). flexor digiti quinti brevis. The fourth layer consists of the interossei (plantar and dorsal), placed between the metatarsal bones: and the tendons of insertion of the tibialis posterior and peronseus longus. FIRST LAYER. M. Abductor Hallucis.—The abductor hallucis has a double origin: (1) by a short tendon from the medial side of the medial process of the tuberosity of the calcaneus (Fig. 386), and (2) by fleshy fibres from the ligamentum laciniatum, the plantar aponeurosis which covers it, and the intermuscular septum between it and the flexor digitorum brevis. Lying superficially along the medial border of the sole, its tendon is inserted,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cun
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