Longitudinal arch of the foot

Longitudinal arch of the foot

Infobox Anatomy
Name = PAGENAME
Latin = arcus pedis longitudinalis
GraySubject = 101
GrayPage = 360


Caption = Skeleton of foot. Medial aspect.


Caption2 = Skeleton of foot. Lateral aspect.
System =
Precursor =
MeshName =
MeshNumber =
DorlandsPre = a_58
DorlandsSuf = 12150674
The Longitudinal arch of the foot can be broken down into several smaller arches:

Main arches

The main arches are the antero-posterior arches, which may, for descriptive purposes, be regarded as divisible into two types—a medial and a lateral.

Medial arch

The medial arch is made up by the calcaneus, the talus, the navicular, the three cuneiforms, and the first, second, and third metatarsals.

Its summit is at the superior articular surface of the talus, and its two extremities or piers, on which it rests in standing, are the tuberosity on the plantar surface of the calcaneus posteriorly and the heads of the first, second, and third metatarsal bones anteriorly.

The chief characteristic of this arch is its elasticity, due to its height and to the number of small joints between its component parts.

Its weakest part, i. e., the part most liable to yield from overpressure, is the joint between the talus and navicular, but this portion is braced by the plantar calcaneonavicular ligament, which is elastic and is thus able to quickly restore the arch to its pristine condition when the disturbing force is removed.

The ligament is strengthened medially by blending with the deltoid ligament of the ankle-joint, and is supported inferiorly by the tendon of the Tibialis posterior, which is spread out in a fanshaped insertion and prevents undue tension of the ligament or such an amount of stretching as would permanently elongate it.

The arch is further supported by the plantar aponeurosis, by the small muscles in the sole of the foot, by the tendons of the Tibialis anterior and posterior and Peronæus longus, and by the ligaments of all the articulations involved.

Lateral arch

The lateral arch is composed of the calcaneus, the cuboid, and the fourth and fifth metatarsals.

Its summit is at the talocalcaneal articulation, and its chief joint is the calcaneocuboid, which possesses a special mechanism for locking, and allows only a limited movement.

The most marked features of this arch are its solidity and its slight elevation; two strong ligaments, the long plantar and the plantar calcaneocuboid, together with the Extensor tendons and the short muscles of the little toe, preserve its integrity.

Fundamental longitudinal arch

While these medial and lateral arches may be readily demonstrated as the component antero-posterior arches of the foot, yet the fundamental longitudinal arch is contributed to by both, and consists of the calcaneus, cuboid, third cuneiform, and third metatarsal: all the other bones of the foot may be removed without destroying this arch.

External links

* [http://www.med.umich.edu/1libr/sma/sma_archpain_art.htm Diagram at umich.edu]
* [http://www.slackbooks.com/excerpts/34914/10-3.gifDiagram at slackbooks.com]
* [http://www.gla.ac.uk/ibls/fab/tutorial/anatomy/arch1.html Overview at gla.ac.uk]


Wikimedia Foundation. 2010.

Нужен реферат?

Look at other dictionaries:

  • Transverse arch of the foot — Infobox Anatomy Name = PAGENAME Latin = arcus pedis transversalis GraySubject = 101 GrayPage = 360 Caption = Skeleton of foot. Medial aspect. Caption2 = Skeleton of foot. Lateral aspect. System = Precursor = MeshName = MeshNumber = DorlandsPre =… …   Wikipedia

  • Arches of the foot — Infobox Anatomy Name = PAGENAME Latin = a. pedis GraySubject = 101 GrayPage = 360 Caption = Skeleton of foot. Medial aspect. Caption2 = Skeleton of foot. Lateral aspect. System = Precursor = MeshName = MeshNumber = DorlandsPre = a 58 DorlandsSuf …   Wikipedia

  • Dorsal interossei of the foot — Dorsal interossei muscles The Interossei dorsales. Left foot. Latin musculi interossei dorsalis pedis Gray s …   Wikipedia

  • Foot — For other uses, see Foot (disambiguation). Foot …   Wikipedia

  • foot — /foot/, n., pl. feet for 1 4, 8 11, 16, 19, 21; foots for 20; v. n. 1. (in vertebrates) the terminal part of the leg, below the ankle joint, on which the body stands and moves. 2. (in invertebrates) any part similar in position or function. 3.… …   Universalium

  • arch — Any structure resembling a bent bow or an a.; an arc. In anatomy, any vaulted or archlike structure. See arcus. SYN: arcus [TA]. [thru O. Fr. fr. L. arcus, bow] abdominothoracic a. a bell shaped line defined by the lower end of the sternum and… …   Medical dictionary

  • Diabetic foot ulcer — is one of the major complications of diabetes mellitus, and probably the major component of the diabetic foot. It occurs in 15% of all patients with diabetes and precedes 84% of all lower leg amputations.[1] Major increase in mortality among… …   Wikipedia

  • Geography of the Interior United States — the games at the great lake are held in the winter so none can live they realy dont want otters or bubble gum to live either. so just go die Physiographic regions of the U.S. Interior See:legend For purposes of description, the physical geography …   Wikipedia

  • List of muscles of the human body — Skeletal muscles homo sapiens Muscles of the human body: Overview Head  |  Neck  |&# …   Wikipedia

  • claw foot — noun 1. : a foot that is or that resembles or is felt to resemble a claw; specifically : a foot on a piece of furniture in the shape of a claw a claw foot chair 2. : a deformity of the foot characterized by an exaggerated curvature of the… …   Useful english dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”