Interphalangeal articulations of hand 4134222 208511452 2008-04-27T12:27:40Z CommonsDelinker 2304267 Replacing [[Image:Human_hand_bones_simple.svg]] with [[Image:Scheme_human_hand_bones-en.svg]] (by [[commons:User:Rlevse|Rlevse]] because: Was in category "Duplicate", exact duplicate). {{Infobox Anatomy | Name = Interphalangeal joints | Latin = articulationes interphalangeae manus, articulationes digitorum manus | GraySubject = 91 | GrayPage = 333 | Image =Scheme_human_hand_bones-en.svg | Caption = Human hand bones | Image2 = Gray337.png | Caption2 = Metacarpophalangeal articulation and articulations of digit. Volar aspect. | Width = 190 | System = | MeshName = | MeshNumber = | DorlandsPre = a_64 | DorlandsSuf = 12161327 | }} The '''interphalangeal articulations of hand''' are [[hinge-joints]] of the [[phalanges of the hand]]. There are two sets (except in the [[thumb]]): * "proximal interphalangeal joints" (PIP), those between the first (also called proximal) and second (intermediate) [[phalanges]] * "distal interphalangeal joints" (DIP), those between the second and third (distal) phalanges A [[Interphalangeal articulations of foot|similar group of articulations]] also function in the [[toes]]. ==Ligaments== Each joint has a [[volar]] ligament and two collateral ligaments. The arrangement of these ligaments is similar to those in the [[metacarpophalangeal joint]]s (also known as MCP joints). The extensor tendons supply the place of [[posterior ligament]]s. ==Movements== The only movements permitted in the interphalangeal joints are [[flexion]] and [[Extension (kinesiology)|extension]]. * Flexion is more extensive, about 100°, in the PIP joints and slightly more restricted, about 80°, in the DIP joints. * Extension is limited by the volar and collateral ligaments. These joints break the most often out of every joint in the body. The muscles generating these movements are: {| class="wikitable" | '''Location''' || '''Flexion''' || '''Extension''' |- | fingers || the [[flexor digitorum profundus]] acting on the [[proximal]] and [[distal]] joints, and the [[flexor digitorum sublimis]] acting on the proximal joints || mainly by the [[Lumbricals of the hand|lumbricales]] and [[interossei]], the long extensors having little or no action upon these joints |- | thumb || the [[flexor pollicis longus]] || the [[extensor pollicis longus]] |} ==See also== * [[Finger]] ==External links== * {{KansasHandKinesiology|bone/phaljt.html}} * {{eMedicineDictionary|proximal+interphalangeal+joints}} * {{eMedicineDictionary|distal+interphalangeal+joints}} * [http://cms.depuy.com/display?docId=40509 Diagram at depuy.com] {{Gray's}} {{Joints of upper limbs}} {{musculoskeletal-stub}} [[nl:DIP-gewricht]] [[sv:Interfalangealled]]