Each toe has 3 phalange bones and 2 joints, while the big toe contains two phalange bones, two joints, and two tiny, round sesamoid bones that enable the toe to move up and down. The rough surface in front of the processes gives attachment to the long plantar ligament and to the lateral head of the quadratus plantae. The second through fourth lumbricals however, have their insertions along the lateral aspects of the bases of the proximal phalanges of the second through fourth toes. December 22, Revisions: The three joints in the rearfoot link the foot and the ankle.
Muscles, Tendons & Ligaments of the Foot & Ankle
The metatarsal bones are the most frequently broken bones in the feet, either from injury or repetitive use. Its plantar surface is grooved anteroposteriorly for the passage of the flexor tendons and marked on either side by an articular eminence continuous with the terminal articular surface. The superior surface is broader in front than behind, convex anteroposterior axis, slightly concave from side to side: The central component of this tissue extends to the supporting bones and gives two divisions—the medial component and lateral component ; thus they define the boundaries of the three muscle compartments of the sole see below. It also provides motor innervation to abductor hallucis, flexor hallucis brevis, flexor digitorum brevis, and the first lumbrical. Tarsal Bones - Gross Anatomy The tarsal bones are 7 in number.
Foot and Ankle Anatomy Explained
Anatomical terminology [ edit on Wikidata ]. Strenuous activity or ill-fitting shoes are the usual causes. In chimpanzees , the soles are furrowed with creases deeper and more distinct than in their palms. Contusion of Extensor Digitorum Brevis. It is not a substitute for medical advice, diagnosis or treatment. Underneath the first metatarsal head are two tiny, round bones called sesamoids. Which of the following muscles is innervated by the lateral plantar nerve?
The accessory navicular bone forms when the tuberosity of the navicular develops from a secondary center of ossification. More and more men are letting their mankles loose - but are exposing the rest of their feet to infection. The posterolateral tubercle contributes an inferior articular surface that is in continuity with the posterolateral aspect of the posterior calcaneal surface of the talus. A small amount of swelling in the feet can be normal after prolonged standing and common in people with varicose veins. Bursae contain special cells called synovial cells that secrete a lubricating fluid. The fibularis peroneus brevis inserts on the dorsal surface of the tuberosity.