Clavicle
Structure of the clavicle (Clavicula)
The clavicle, Clavicula, is an "S"-shaped curved bone. Medially forward facing, the bone has a convexity that occupies about 2/3 of the length, and laterally forward facing, it is concave.
Between the thickened end (Extremitas sternalis, towards the sternum) and the flat end (Extremitas acromialis, towards the shoulder blade) lies the Corpus claviculae. The sternal end covers a three-sided articular surface, Facies articularis sternalis. The articular surface at the other end of the clavicle, the Facies articularis acromialis, is approximately oval.
Near the Extremitas sternalis the Tuberositas lig. costoclavicularis is located at the lower surface of the clavicle. The Sulcus m. subclavii is located on the undersurface of the Corpus claviculae.
Nahe dem akromialen Ende wölbt sich an der Unterfläche ein Höckerchen, Tuberculum conoideum, vor und lateral davon befindet sich die Linea trapezoidea.
Gelenke
Die Clavicula ist über zwei Gelenke mit mit dem Brustbein und dem Schulterblatt in Verbindung:
- Sternoklavikulargelenk: Verbindung von Extremitas sternalis mit dem Manubrium sterni des Brustbeins
- Akromioklavikulargelenk: Verbindung von Extremitas acromialis mit dem Acromion der Scapula
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