Foveola radialis
The foveola radialis (Latin: dimple belonging to the radius) is a triangular, elongated depression on the thumb side of the wrist. It is particularly noticeable when all fingers are stretched and the thumb is spread apart. Snuff gives the snuff in portions into the spoke pit, from where it can be easily inhaled into the nose. Therefore, the Speichengrübchen is also called snuff called (frz. Snuffbox).
Further synonyms are spoke dimples , snuff pit , Fovea radialis , Fossa radialis , Fossula radialis , Fossa radialis manus , Tabatière anatomique and Fossa Tabatière .
The anatomical delimitation is made on the long sides by tendons of thumb muscles ( abductor pollicis longus muscle = long thumb spreader, extensor pollicis brevis muscle = short thumb extensor and extensor pollicis longus muscle = long thumb extensor). The end on the arm (proximal limit) is formed by the extensor retinaculum (a firm band that guides the tendons of the finger extensor muscles). The floor consists of the scaphoid bone (scaphoid bone) and the lateral edge of the radius, the processus styloideus radii . The arteria radialis ( radial artery ) runs through the tobacco box, the pulse of which can usually be felt here. Furthermore, a superficial branch of the radial nerve (Ramus superficialis nervi radialis) is found, which is responsible for the sensitive innervation of the skin on the thumb side of the back of the hand.
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- M. Schünke, E. Schulte, U. Schuhmacher: Prometheus - learning atlas of anatomy. General anatomy and motor system. Thieme, 2005, ISBN 3-13-139521-4 .