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Radius and ulna are the human forearm bones (lat. Ossa antebrachii) and are therefore located in the free upper extremity.  They belong to the tubular bones. They are limited by the humerus and the carpal bones. The elbow joint and wrist are formed at these points.
 
Radius and ulna are the human forearm bones (lat. Ossa antebrachii) and are therefore located in the free upper extremity.  They belong to the tubular bones. They are limited by the humerus and the carpal bones. The elbow joint and wrist are formed at these points.
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<ul class="center"> <li class="mw-ui-button button_new">[[Special:MyLanguage/Übungsaufgaben|exercise TASKS]]</li></ul></div>
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<div>[[Special:MyLanguage/Übungsaufgaben: Untere Extremität|Lower extremity]]</div>
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<div>[[Special:MyLanguage/Übungsaufgabe: Unterarmknochen|Forearm bones]]</div>
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<div class="segmenter"><segmenter-embedding public wsemb-id="UnterarmknochenFrau" file="UnterarmknochenFrau.seg" height="300" width="400"/></div>
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<ul>'''Zugehörige Strukturen:'''<li class="mw-ui-button button_new">[[Special:MyLanguage/Elle|Elle]]</li><li class="mw-ui-button button_new">[[Special:MyLanguage/Speiche|Speiche]]</li></ul>
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<div class="floatright" style="margin:0.4em;">[[File:PfeilDropdown.png|20px|link=|Related structures]]</div>
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<div class="dropbtnart">Related structures</div>
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<div>[[Special:MyLanguage/Elle|Ulna]]</div>
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<div>[[Special:MyLanguage/Speiche|Radius]]</div>
 
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<ul>'''Übergeordnete Strukturen:'''<li class="mw-ui-button button_new">[[Special:MyLanguage/Knochen Obere Extremität|KNOCHEN OBERE EXTREMITÄT]]</li><li class="mw-ui-button button_new">[[Special:MyLanguage/Obere Extremität|OBERE EXTREMITÄT]]</li><li class="mw-ui-button button_new">[[Special:MyLanguage/Körperregionen|KÖRPERREGIONEN]]</li></ul>
 
 
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==Anatomie==
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<lightbox-embedding src="file:UnterarmknochenVentralOhneBeschriftung.png" group="image-group-1" caption="Anatomie der Unterarmknochen (ventral)" width="300" height="300" style="width:300px;float:left;margin:1px;background-color:#fff;border:1px solid #c8ccd1;display: flex;justify-content: center;"/>
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<div>[[Special:MyLanguage/Knochen Obere Extremität|Bones upper extremity]]</div>
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<lightbox-embedding  src="file:UnterarmknochenDorsalOhneBeschriftung.png" group="image-group-1" caption="Anatomie der Unterarmknochen (ventral)"/><lightbox-embedding  src="file:UnterarmknochenVentral.png" group="image-group-1" caption="Anatomie der Unterarmknochen (ventral)"/><lightbox-embedding src="file:UnterarmknochenDorsal.png" group="image-group-1" caption="Anatomie der Unterarmknochen (dorsal)"/><lightbox-embedding src="file:UnterarmknochenSchräg.png" group="image-group-1" caption="Anatomie der Unterarmknochen (dorsal)"/>
 
 
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<lightbox-embedding  src="file:AufsichtDistalegelenkflächenUnterarmknochen.png" group="image-group-1" caption="Anatomie der distalen Gelenkflächen der Unterarmknochen (ventral)"/><lightbox-embedding  src="file:AufsichtProximaleGelenkflächenUnterarmknochen.png" group="image-group-1" caption="Anatomie der proximalen Gelenkflächen der Unterarmknochen (ventral)"/>
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<div class="floatright" style="margin:0.4em;">[[File:PfeilDropdown.png|20px|link=|Organ system]]</div>
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<div class="dropbtnart">[[Special:MyLanguage/Organsystem|Organ system]]</div>
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<div>[[Special:MyLanguage/Röhrenknochen|Tubular bones]]</div>
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<div>[[Special:MyLanguage/Knochen|Bones]]</div>
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<div>[[Special:MyLanguage/Passiver Bewegungsapparat|Passive movement apparatus]]</div>
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Anatomie der Unterarmknochen </div>
 
 
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==Anatomy==
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{{ArticleGallery|
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Bild 1=<lightbox-embedding src="file:UnterarmknochenVentralOhneBeschriftung.png" group="image-group-1" caption="Anatomy of the forearm bones (ventral)" width="400" height="300" style=""/>|
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Weitere Bilder=<lightbox-embedding  src="file:UnterarmknochenDorsalOhneBeschriftung.png" group="image-group-1" caption="Anatomy of the forearm bones (ventral)"/><lightbox-embedding  src="file:UnterarmknochenVentral.png" group="image-group-1" caption="Anatomy of the forearm bones (ventral)"/><lightbox-embedding src="file:UnterarmknochenDorsal.png" group="image-group-1" caption="Anatomy of the forearm bones (dorsal)"/><lightbox-embedding src="file:UnterarmknochenSchräg.png" group="image-group-1" caption="Anatomy of the forearm bones"/>
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<lightbox-embedding  src="file:AufsichtDistalegelenkflächenUnterarmknochen.png" group="image-group-1" caption="Anatomy of the distal joint surfaces of the forearm bones (ventral)"/><lightbox-embedding  src="file:AufsichtProximaleGelenkflächenUnterarmknochen.png" group="image-group-1" caption="Anatomy of the proximal joint surfaces of the forearm bones (ventral)"/>
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|title=Anatomy of the forearm bones}}
  
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Die Unterarmknochen bilden sich aus den parallel verlaufenden Röhrenknochen: Ulna und Radius. Die Ulna befindet sich in der medialen Seite des Unterarms. Der Radius ist parallel zur Ulna angeordnet und hat eine dickeren Druchmesser. Verbunden sind die beiden Knochen durch sie Membrana interossea antebrachii.
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The forearm bones are formed from the parallel tubular bones: Ulna and radius. The ulna is located in the medial side of the forearm. The radius is parallel to the ulna and has a thicker diameter. The two bones are connected by the membrana interossea antebrachii.
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Ist der Unterarm in Supinationsstellung (Handfläche zeigt in hängender Armposition nach vorne), so liegen die Unterarmknochen parallel vor. In der Pronationsstellung (Handfläche zeigt in hängender Armposition nach hinten) dagegen ist die Parallelität der Knochen nicht mehr vorhanden. Die Ulna und der Radius überkreuzen sich.
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If the forearm is in supination position (palm of the hand points forward in hanging arm position), the forearm bones are parallel. In the pronation position (palm of the hand points backwards in the hanging arm position), however, the parallelism of the bones is no longer present. The ulna and the radius cross each other.
  
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==Funktion==
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==Function==
  
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Durch die Unterarmknochen wird eine Verbindung des Oberarmes mit der Hand geschaffen. Die zwei Unterarmknochen bilden Gelenke mit dem Oberarmknochen und den Handwurzelknochen. Die Ulna und der Radius ermöglichen die Drehung des Armes durch die Überkreuzung der Knochen beim Wechsel von Supinations- in Pronationsstellung.
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The forearm bones create a connection between the upper arm and the hand. The two forearm bones form joints with the upper arm bone and the carpal bones. The ulna and the radius allow the rotation of the arm by crossing the bones when changing from supination to pronation position.
  
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==Erkrankungen==
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==Diseases==
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* [[Special:MyLanguage/Unterarmfraktur|Unterarmfraktur]]
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* [[Special:MyLanguage/Unterarmfraktur|fracture of the forearm]]
  
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==Freies Explorieren==
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==Free exploration==
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<div style="float:left;width:50%">Schauen Sie sich die Struktur der Unterarmknochen in 3D an und explorieren Sie sie frei. Danach können Sie Ihr erlerntes Wissen durch die Übungsaufgaben überprüfen.</div>
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<div style="float:left;width:50%">Look at the structure of the forearm bone in 3D and explore it freely. Afterwards you can test your acquired knowledge by the exercises.</div>
 
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<li class="mw-ui-button button_new" >[[Special:MyLanguage/Übungsaufgaben|Exercises]]</li>
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<ul>'''Weitere Artikel:'''<li class="mw-ui-button button_new" >[[Special:MyLanguage/Unterschenkelknochen|UNTERSCHENKELKNOCHEN]]</li><li class="mw-ui-button button_new" >[[Special:MyLanguage/Handknochen|HANDKNOCHEN]]</li></ul>
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<ul>'''Weiterführende Links:'''<li class="mw-ui-button button_new">[https://de.wikipedia.org/wiki/Unterarknochen WIKIPEDIA - UNTERARMKNOCHEN]</li></ul>
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<li class="mw-ui-button button_normal">[[Special:MyLanguage/Unterschenkelknochen|Lower leg bones]]</li>
 
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<li class="mw-ui-button button_normal">[[Special:MyLanguage/Handknochen|Hand bones]]</li>
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[[Category:Bones Upper Extremity]]
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[[Category:Upper Extremity]]
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[[Category:Body regions]]
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Aktuelle Version vom 7. Januar 2022, 13:33 Uhr

Radius and ulna are the human forearm bones (lat. Ossa antebrachii) and are therefore located in the free upper extremity. They belong to the tubular bones. They are limited by the humerus and the carpal bones. The elbow joint and wrist are formed at these points.

Exercises
Exercises
Related structures
Related structures
Body regions
Body regions
Organ system
Organ system

Anatomy

Anatomy of the forearm bones

The forearm bones are formed from the parallel tubular bones: Ulna and radius. The ulna is located in the medial side of the forearm. The radius is parallel to the ulna and has a thicker diameter. The two bones are connected by the membrana interossea antebrachii. If the forearm is in supination position (palm of the hand points forward in hanging arm position), the forearm bones are parallel. In the pronation position (palm of the hand points backwards in the hanging arm position), however, the parallelism of the bones is no longer present. The ulna and the radius cross each other.

Function

The forearm bones create a connection between the upper arm and the hand. The two forearm bones form joints with the upper arm bone and the carpal bones. The ulna and the radius allow the rotation of the arm by crossing the bones when changing from supination to pronation position.

Diseases

Free exploration

Look at the structure of the forearm bone in 3D and explore it freely. Afterwards you can test your acquired knowledge by the exercises.
  • Exercises
  • Further article
  • Lower leg bones
  • Hand bones
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