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Encyclopedia > Upper extremity of tibia
Upper extremity of tibia
Upper surface of right tibia. (Anterior is at top.)
Latin '
Gray's subject #61 256
System
Precursor {{{Precursor}}}
MeSH [1]
Dorlands/Elsevier /

The upper extremity of the tibia (or proximal extremity) is large, and expanded into two eminences, the medial condyle and lateral condyle. Image File history File links From Grays Anatomy File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Download high resolution version (800x729, 63 KB)Knee. ... Latin is an ancient Indo-European language originally spoken in the region around Rome called Latium. ... In biology, an organ is a group of tissues which perform some function. ... Embryology is the branch of developmental biology that studies embryos and their development. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... Elseviers logo Elsevier, the worlds largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. ... Figure 1 : Upper surface of right tibia. ... Medial condyle can refer to: Medial condyle of tibia Medial condyle of femur This is a disambiguation page: a list of articles associated with the same title. ... Lateral condyle can refer to: Lateral condyle of tibia Lateral condyle of femur This is a disambiguation page: a list of articles associated with the same title. ...

Contents


Facets

The superior articular surface presents two smooth articular facets.

  • The medial facet, oval in shape, is slightly concave from side to side, and from before backward.
  • The lateral, nearly circular, is concave from side to side, but slightly convex from before backward, especially at its posterior part, where it is prolonged on to the posterior surface for a short distance.

The central portions of these facets articulate with the condyles of the femur, while their peripheral portions support the menisci of the knee-joint, which here intervene between the two bones. The femur or thigh bone is the longest, most voluminous and strongest bone of the human body (able to withstand over 550 pounds of force). ... A: Read the bottom of a concave meniscus. ... An x-ray of a human knee Grays Fig. ...


Intercondyloid eminence

Between the articular facets, but nearer the posterior than the anterior aspect of the bone, is the intercondyloid eminence (spine of tibia), surmounted on either side by a prominent tubercle, on to the sides of which the articular facets are prolonged; in front of and behind the intercondyloid eminence are rough depressions for the attachment of the anterior and posterior cruciate ligaments and the menisci. Diagram of the knee The posterior cruciate ligament (or PCL) is one of the four major ligaments of the knee. ...


Surfaces

Anterior

The anterior surfaces of the condyles are continuous with one another, forming a large somewhat flattened area; this area is triangular, broad above, and perforated by large vascular foramina; narrow below where it ends in a large oblong elevation, the tuberosity of the tibia, which gives attachment to the ligamentum patellæ; a bursa intervenes between the deep surface of the ligament and the part of the bone immediately above the tuberosity. A bursa is also a fluid filled sac located between a bone and tendon which normally serves to reduce friction between the two moving surfaces. ...


Posterior

Posteriorly, the condyles are separated from each other by a shallow depression, the posterior intercondyloid fossa, which gives attachment to part of the posterior cruciate ligament of the knee-joint. Diagram of the knee The posterior cruciate ligament (or PCL) is one of the four major ligaments of the knee. ... An x-ray of a human knee Grays Fig. ...


The medial condyle presents posteriorly a deep transverse groove, for the insertion of the tendon of the Semimembranosus. The Semimembranosus muscle is a muscle of the human body. ...


Medial

Its medial surface is convex, rough, and prominent; it gives attachment to the tibial collateral ligament. The medial collateral ligament (or MCL) is one of the four major ligaments of the knee. ...


The lateral condyle presents posteriorly a flat articular facet, nearly circular in form, directed downward, backward, and lateralward, for articulation with the head of the fibula.


Lateral

Its lateral surface is convex, rough, and prominent in front: on it is an eminence, situated on a level with the upper border of the tuberosity and at the junction of its anterior and lateral surfaces, for the attachment of the iliotibial band. The deep fascia of the thigh is named, from its great extent, the fascia lata; it constitutes an investment for the whole of this region of the limb, but varies in thickness in different parts. ...


Just below this a part of the Extensor digitorum longus takes origin and a slip from the tendon of the Biceps femoris is inserted. The Extensor digitorum longus muscle is a muscle of the human body. ... The biceps femoris, as its name implies, has two heads. ...


This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


 
 

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