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| − | + | The clavicle (lat. Clavicula) is a pairwise [[Special:MyLanguage/Röhrenknochen|tubular bone]]. It has an "s"-shaped bend and is located in the [[Special:MyLanguage/Schultergürtel|shoulder girdle]]. It is the only direct connection between the free upper extremity and the [[Special:MyLanguage/Rumpf|trunk]]. | |
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| − | <div>[[Special:MyLanguage/Übungsaufgaben: Obere Extremität| | + | <div>[[Special:MyLanguage/Übungsaufgaben: Obere Extremität|Upper extremity]]</div> |
| − | <div>[[Special:MyLanguage/Übungsaufgabe: Schultergürtel| | + | <div>[[Special:MyLanguage/Übungsaufgabe: Schultergürtel|Shoulder girdle]]</div> |
| − | <div>[[Special:MyLanguage/Übungsaufgabe: Schlüsselbein| | + | <div>[[Special:MyLanguage/Übungsaufgabe: Schlüsselbein|Clavicle]]</div> |
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| − | <div>[[Special:MyLanguage/Schulterblatt| | + | <div>[[Special:MyLanguage/Schulterblatt|Shoulder blade]]</div> |
| − | <div>[[Special:MyLanguage/Oberarmknochen| | + | <div>[[Special:MyLanguage/Oberarmknochen|Upper arm bone]]</div> |
| − | <div>[[Special:MyLanguage/Brustbein| | + | <div>[[Special:MyLanguage/Brustbein|Sternum]]</div> |
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| − | <div>[[Special:MyLanguage/Obere Extremität| | + | <div>[[Special:MyLanguage/Obere Extremität|Upper extremity]]</div> |
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---- | ---- | ||
| − | + | ==Anatomy== | |
| − | ==Anatomy== | ||
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View and anatomy of the clavicle</div> | View and anatomy of the clavicle</div> | ||
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*[[Special:MyLanguage/Dysostosis_cleidocranialis|Disostosis cleidocranialis]] | *[[Special:MyLanguage/Dysostosis_cleidocranialis|Disostosis cleidocranialis]] | ||
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==Free exploration== | ==Free exploration== | ||
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<div style="float:left;width:50%">Look at the structure of the clavicle in 3D and explore it freely. Afterwards you can test your acquired knowledge by the exercises.</div> | <div style="float:left;width:50%">Look at the structure of the clavicle in 3D and explore it freely. Afterwards you can test your acquired knowledge by the exercises.</div> | ||
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| − | <div style="center"><b> | + | <div style="center"><b>Further articles</b></div> |
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| − | <li class="mw-ui-button button_normal">[[Special:MyLanguage/Beckengürtel| | + | <li class="mw-ui-button button_normal">[[Special:MyLanguage/Beckengürtel|Pelvic girdle]]</li> |
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| − | <li class="mw-ui-button button_normal">[[Special:MyLanguage/Brustbein| | + | <li class="mw-ui-button button_normal">[[Special:MyLanguage/Brustbein|Sternum]]</li> |
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| − | [[Category: | + | [[Category:Shoulder girdle]] |
| − | [[Category: | + | [[Category:Bones Upper Extremity]] |
| − | [[Category: | + | [[Category:Upper Extremity]] |
| − | [[Category: | + | [[Category:Body regions]] |
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Aktuelle Version vom 10. Mai 2022, 12:27 Uhr
The clavicle (lat. Clavicula) is a pairwise tubular bone. It has an "s"-shaped bend and is located in the shoulder girdle. It is the only direct connection between the free upper extremity and the trunk.
Inhaltsverzeichnis
Anatomy
The clavicle is located in the shoulder girdle and thus at the front of the trunk. Medially it is limited by the Sternum and laterally by the arcomion of the shoulder blade. The connection to the sternum is the only direct link between the free upper extremity and the trunk.
The clavicle is a tubular bone bent into an "S" shape. From cranial view the medial end shows a ventral convexity. This convexity takes up about 2/3 of the length of the entire bone. The lateral side, in contrast, shows a ventral concavity. In an adult, the clavicle is 12-15 cm long and can be palpated over its entire length.
The thickened sternal end of the clavicle is called Extremitas sternalis. This name is due to its location adjacent to the sternum. On this side of the clavicle a saddle-shaped, three-sided articular surface is formed, which is covered with the Facies articularis sternalis. The lateral side of the clavicle is called Extremitas acromialis due to its connection to the acromion of the scapula. There is a rather flat, vertically oriented surface. This is almost oval and covered with the Facies articularis acrommialis. The area of the clavicle between the two ends is called Corpus claviculae.
If one looks at the clavicle from caudal, further structures become apparent. On the acromial side a bony elevation is pronounced, the tuberculum conoideum. This is also visible from the cranial view. Lateral to it is the linea trapezoides from the caudal side. From caudal view the corpus claviculae is characterized by an elongated depression called sulcus musculi subclavia. From the caudal side a depression appears at the sternal extremity, called impressio ligamenti costoclavicularis.
Joints
The collarbone is connected to the sternum via the sternoclavicular joint. This connects the following bony structures: Extremitas sternalis and Manubrium sterni.
The clavicle and the scapula articulate via the acromioclavicular joint. This connects the extremitas acromialis and the acromion of the scapula.
Development
During embryonic development, the clavicle is developed from a connective tissue base. It is therefore the only bone in an extremity that is not preformed by cartilage. However, the clavicle is one of the bones that develops earliest. Its diaphysis thus ossifies as early as embryonic week six to seven. An ossified nucleus can only be detected in the epyphyses at the age of 16 to 18 years. The epiphysis joints here do not close until the age of 20 to 25 years. They are therefore the last joints to close in the human body.
