Foot

Abductor Hallucis

Abductor Hallucis The structure indicated is the abductor hallucis muscle of the foot. The intrinsic muscles on the plantar aspect of the foot are divided into four layers. The abductor hallucis muscle is found in the first layer of muscles. There are three muscles in the first layer: Abductor hallucis Flexor digitorum brevis Abductor digiti minimi The abductor hallucis muscle is located in the medial border of the foot and is responsible for the palpable bulk of muscle that you can feel on the inside of the foot. It inserts via a common tendon, together with the flexor hallucis brevis, onto …

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abductor hallucis

Flexor Digitorum Brevis

Flexor Digitorum Brevis The structure indicated is the flexor digitorum brevis muscle of the foot. The intrinsic muscles on the plantar aspect of the foot are divided into four layers. The flexor digitorum brevis muscles is found in the first layer of muscles. There are three muscles in the first layer: Abductor hallucis Flexor digitorum brevis Abductor digiti minimi The flexor digitorum brevis muscle lies above the  central part of the plantar aponeurosis and just below the tendons of flexor digitorum longus. Origin: medial process of calcaneal tuberosity and plantar aponeurosis. Insertion: Plantar sides of middle phalanges of lateral four …

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flexor digitorum brevis

Lateral Cuneiform Bone

Lateral Cuneiform Bone The structure indicated is the lateral cuneiform bone of the foot. The foot contains three groups of bones: Tarsals Metatarsals Phalanges The lateral cuneiform bone is one of seven tarsal bones. There are three groups of tarsal bones: Proximal group Intermediate group Distal group The lateral cuneiform bone belongs to the distal group of tarsal bones. There are three cuneiform bones: Lateral cuneiform Intermediate cuneiform Medial cuneiform Anteriorly they articulate with the medial three metatarsals. Posteriorly they articulate with the navicular bone, and laterally they articulate with the cuboid bone. Learn more about the bones of the …

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Lateral Cuneiform

Calcaneus

Calcaneus The structure indicated is the calcaneus bone of the foot. The foot contains three groups of bones: Tarsals Metatarsals Phalanges The calcaneus is one of seven tarsal bones. There are three groups of tarsal bones: Proximal group Intermediate group Distal group There are two bones in the proximal group of tarsal bones: the talus and the calcaneus. The calcaneus is the largest tarsal bone and forms the heel through its posterior projection. Anteriorly, the calcaneus articulates with the cuboid bone, and superiorly it articulates with talus. Three muscles insert onto the calcaneus: Gastrocnemius Soleus Plantaris Learn more about the …

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Calcaneus

Calcaneofibular Ligament

Calcaneofibular Ligament The structure indicated is the calcaneofibular ligament of the foot. The calcaneofibular ligament is one of three ligaments found on the lateral aspect of the ankle. The lateral ligaments of the ankle joint consists of: Anterior talofibular ligament Posterior talofibular ligament Calcaneofibular ligament The calcaneofibular ligament has its superior attachment on the malleolar fossa on the lateral malleolus, and its inferior attachment on the lateral surface of the calcaneus. Running across the calcaneofibular ligament are the tendons of the peroneus longus and peroneus brevis. Learn more about the anatomy of the ankle joint in this tutorial.
Calcaneofibular Ligament

Inversion of the Foot

Inversion of the Foot This diagram indicates inversion of the foot. Inversion is a movement of the foot which causes the soles of the feet to face inwards, and eversion is the opposite movement. Inversion and eversion occur primarily at: Talocalcaneonavicular joint Subtalar (talocalcaneal) joint The muscles which cause inversion of the foot are: Tibialis anterior Tibialis posterior The muscles which cause eversion of the foot are: Peroneus longus Peroneus brevis Inversion injuries of the ankle are common, and result in ankle sprain affecting the ligaments on the lateral aspect of the ankle. Most commonly, the anterior talofibular ligament (70-85% …

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Inversion of the Foot

Quadratus Plantae Muscle

Quadratus Plantae Muscle The muscle highlighted is the quadratus plantae muscle of the foot. The intrinsic muscles on the plantar aspect of the foot are divided into four layers. The quadratus plantae muscle is found in the second layer of muscles. There are two muscles in the second layer: Quadratus plantae Lumbricals The muscles in the second layer are associated with the tendons of the flexor digitorum longus muscle. This tendon forms the site of insertion for the quadratus plantae muscle, and forms the site of origin for the four lumbricals. The quadratus plantae muscle has two heads – a …

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Quadratus Plantae

Navicular Bone

Navicular Bone The structure highlighted is the navicular bone of the foot. The foot contains three groups of bones: Tarsals Metatarsals Phalanges The navicular is one of seven tarsal bones. There are three groups of tarsal bones: Proximal group Intermediate group Distal group The navicular bone is the only bone in the intermediate group and is located medially in the foot. Posteriorly, the navicular articulates with the talus. Anteriorly, the navicular articulates with the cuneiform bones and laterally it articulates with the cuboid bone. There is only one muscle which attaches to the navicular bone: the tibialis posterior. It attaches onto the tuberosity …

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Navicular