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In the foot, the distal phalanges are flat on their dorsal surface. It is largest proximally and tapers to the distal end. The proximal part of the phalanx presents a broad base for articulation with the middle phalanx, and an expanded distal extremity for the support of the nail and end of the toe. [10]: 6b. 3.
The interphalangeal joints of the foot are the joints between the phalanx bones of the toes in the feet. Since the great toe only has two phalanx bones ( proximal and distal phalanges), it only has one interphalangeal joint, which is often abbreviated as the " IP joint ".
Each toe consists of three phalanx bones, the proximal, middle, and distal, with the exception of the big toe (Latin: hallux). For a minority of people, the little toe also is missing a middle bone. The hallux only contains two phalanx bones, the proximal and distal. The joints between each phalanx are the interphalangeal joints.
They are analogous to the knuckles of the hand, and are consequently known as toe knuckles in common speech. They are condyloid joints, meaning that an elliptical or rounded surface (of the metatarsal bones) comes close to a shallow cavity (of the proximal phalanges). The region of skin directly below the joints forms the ball of the foot.
The hindfoot is composed of the talus (or ankle bone) and the calcaneus (or heel bone). The two long bones of the lower leg, the tibia and fibula, are connected to the top of the talus to form the ankle. Connected to the talus at the subtalar joint, the calcaneus, the largest bone of the foot, is cushioned underneath by a layer of fat. [2]
Bones of the right foot. Dorsal surface. Metatarsus shown in yellow. The base of each metatarsal bone articulates with one or more of the tarsal bones at the tarsometatarsal joints, and the head with one of the first row of phalanges at the metatarsophalangeal joints. Their bases also articulate with each other at the intermetatarsal joints
Inserts on the dorsal side of the base of the distal phalanx of the big toe: Artery: Anterior tibial artery: Nerve: Deep fibular nerve, L5 (L4-S1) Actions: Extends (raises) the big toe and assists in dorsiflexion of the foot at the ankle. Also is a weak evertor/invertor: Antagonist: Flexor hallucis longus, flexor hallucis brevis: Identifiers; Latin
Second metatarsal bone elongation, also known as Morton's toe (or Morton's foot) is a normal variation of the second metatarsal present in about 25% of the total population. Although normal, Morton's toe causes extra- inversion of the foot and thereby puts more stress on the lateral part of the meniscus of the knee, promotes lordosis of the ...