词条 | Condyloid joint |
释义 |
| Name = Condyloid joint | Latin = articulatio ellipsoidea | Image = Gelenke_Zeichnung01.jpg | Caption = 1: Ball and socket joint; 2: Condyloid joint (Ellipsoid); 3: Saddle joint; 4 Hinge joint; 5: Pivot joint; | Image2 = Gray334.png | Caption2 = Ligaments of wrist. Palmaris view | System = | Precursor = }} A condyloid joint (also called condylar, ellipsoidal, or bicondylar) is an ovoid articular surface, or condyle that is received into an elliptical cavity. This permits movement in two planes, allowing flexion, extension, adduction, abduction, and circumduction. ExamplesExamples include:[1]
These are also called ellipsoid joints. The oval-shaped condyle of one bone fits into the elliptical cavity of the other bone. These joints allow biaxial movements—i.e., forward and backward, or from side to side, but not rotation. Radiocarpal joint and Metacarpo-phalangeal joint are examples of condyloid joint. An example of an Ellipsoid joint is the wrist; it functions similarly to the ball and socket joint except is unable to rotate 360 degrees; it prohibits axial rotation. References{{Gray's}}1. ^Module - Introduction to Joints {{webarchive |url=https://web.archive.org/web/20090116022043/http://anatomy.med.umich.edu/modules/joints_module/joints_18.html |date=January 16, 2009 }} {{Commons category|Condyloid joints}}{{Joints}}{{Portal bar|Anatomy}}{{Authority control}} 1 : Joints |
随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。