pivot joint

also called  Rotary Joint, or Trochoid Joint,  

      in vertebrate anatomy, a joint that allows only rotary movement. It is exemplified by the joint between the atlas and the axis (first and second cervical vertebrae), directly under the skull, which allows for turning of the head from side to side. Pivot joints also provide for the twisting movement of the bones of the forearm (radius and ulna) against the upper arm, a movement used, for instance, in unscrewing the lid of a jar.

* * *


Universalium. 2010.

Look at other dictionaries:

  • pivot joint — n an anatomical articulation that consists of a bony pivot in a ring of bone and ligament (as that of the dens and atlas) and that permits rotatory movement only called also trochoid * * * see trochoid joint * * * articulatio trochoidea …   Medical dictionary

  • pivot joint — noun a freely moving joint in which movement is limited to rotation the articulation of the radius and ulna in the arm is a pivot joint • Syn: ↑rotary joint, ↑rotatory joint, ↑articulatio trochoidea • Hypernyms: ↑synovial joint, ↑articulatio sy …   Useful english dictionary

  • Pivot joint — Infobox Anatomy Name = PAGENAME Latin = articulatio trochoidea GraySubject = 70 GrayPage = 285 Caption = 1: Ball and socket joint; 2: Condyloid joint (Ellipsoid); 3: Saddle joint; 4 Hinge joint; 5: Pivot joint; Caption2 = System = Precursor =… …   Wikipedia

  • pivot joint — UK / US noun [countable] Word forms pivot joint : singular pivot joint plural pivot joints medical a joint (= part in the body where two bones meet) in which one bone turns around on another bone. This type of joint allows, for example, the head… …   English dictionary

  • pivot joint — see trochoid joint …   The new mediacal dictionary

  • pivot joint — /ˈpɪvət dʒɔɪnt/ (say pivuht joynt) noun Anatomy a joint where the head of one part rotates within the ring shape of the other, as with the first and second vertebrae which make possible the turning of the head …   Australian English dictionary

  • Сустав Цилиндрический (Trochoid Joint, Pivot Joint) — вид диартроза (свободно движущегося сустава); в этом суставе кости совершают вращательное движение вокруг центральной оси. Примером такого сустава является срединный атлантоосевой сустав, образованный ямкой дуги атланта и осью второго шейного… …   Медицинские термины

  • Pivot — may refer to: * Pivot, the fulcrum as part of a lever * Pivot joint, a kind of joint between bones in the body * Pivot turn, a dance moveIn mathematics: * Pivot element, the first element distinct from zero in a matrix in echelon form * Pivotal… …   Wikipedia

  • joint — /joynt/, n. 1. the place at which two things, or separate parts of one thing, are joined or united, either rigidly or in such a way as to permit motion; juncture. 2. a connection between pieces of wood, metal, or the like, often reinforced with… …   Universalium

  • Joint — A joint is the area where two bones are attached for the purpose of motion of body parts. A joint is usually formed of fibrous connective tissue and cartilage. An articulation or an arthrosis is the same as a joint. Joints are grouped according… …   Medical dictionary

Share the article and excerpts

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

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.