Supination

Supination

Supination is a position of either the forearm or foot; in the forearm when the palm faces anteriorly, or faces up (when the arms are unbent and at the sides). Supination in the foot occurs when a person appears "bow-legged" with their weight supported primarily on the anterior of their feetcite web | title = Common Foot Problems | url = http://www.archsupport1.com/commonproblems.php ] .

The hand is supine (facing anteriorly) in the anatomical position. This action is performed by the Biceps brachii and the Supinator muscle.

Supination is the opposite of pronation.

History

Originally, supination of the forearm was attributed as a function of the brachioradialis muscle. However, the original idea of the biceps acting as a supinator was something hypothesised by Leonardo da Vinci, in a series of annotated drawings made between 1505 and 1510 (referred to as his Milanese period); in which the principle of the biceps as a supinator, as well as its role as a flexor to the elbow was devised. However, this function remained undiscovered by the medical community as Da Vinci was not regarded as a teacher of anatomy, nor were his results publicly released.

It was not until 1713, that this movement was re-discovered by William Cheselden, and subsequently recorded for the medical community, being rewritten several times by different authors wishing to present information to different audiences. Nevertheless, the most notable recent expansion upon Cheselden's recordings was achieved by Guillaume Duchenne in 1867 in a journal named "Physiology of Motion", something which to this day is one of the major references on supination action of the biceps brachii.

References

ee also

* Proximal radioulnar articulation
* Bodybuilding

External links

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  • supination — [ sypinasjɔ̃ ] n. f. • 1654; lat. supinatio ♦ Physiol. Mouvement de rotation que la main et l avant bras exécutent de dedans en dehors sous l action des muscles supinateurs; position de la main après ce mouvement (opposé à pronation). Par anal.… …   Encyclopédie Universelle

  • Supination — Su pi*na tion, n. [L. supinare, supinatum, to bend or lay backward, fr. supinus supine: cf. F. supination. See {Supine}.] (Physiol.) (a) The act of turning the hand palm upward; also, position of the hand with the palm upward. (b) The act or… …   The Collaborative International Dictionary of English

  • Supination — und Supinatoren, s. Pronation …   Meyers Großes Konversations-Lexikon

  • Supination — (lat.), Zurückbeugung, diejenige Bewegung der Armspeiche um die Ellbogenröhre, bei der der Handrücken nach unten liegt (Gegensatz: Pronation); Supinātor, Muskel, der die S. bewirkt …   Kleines Konversations-Lexikon

  • Supination —   [zu lateinisch supinare, supinatum »rückwärts beugen«] die, / en, Auswärtsdrehung der Hand oder des Fußes; Gegensatz: Pronation.   * * * Su|pi|na|ti|on, die; , en [zu lat. supinare (2. Part.: supinatum) = (von unten) nach oben kehren, rückwärts …   Universal-Lexikon

  • supination — 1660s, from L. supinationem (nom. supinatio), noun of action from supinare (see SUPINE (Cf. supine)) …   Etymology dictionary

  • Supination — Als Supination (lateinisch supinitas = „zurückgebogene Stellung“) wird in der Medizin und Anatomie die Auswärtsdrehung der Hand durch Rotation des Unterarmes bezeichnet, so dass Elle und Speiche nach der Drehung parallel nebeneinander liegen.… …   Deutsch Wikipedia

  • Supination — Exemple d un bras replié dans une position de supination. La supination est le mouvement de l avant bras et de la main dans lequel le radius tourne latéralement autour de son axe longitudinal de telle façon que la paume de la main s oriente… …   Wikipédia en Français

  • SUPINATION — s. f. T. didactique. On appelle, en Physiologie, Mouvement de supination, Le mouvement que les muscles supinateurs font exécuter à l avant bras et à la main. SUPINATION, en termes de Pathologie, signifie, La position d un malade couché à la… …   Dictionnaire de l'Academie Francaise, 7eme edition (1835)

  • Supination — Rotation of the arm or leg outward. In the case of the arm, the palm of the hand will face forward. * * * The condition of being supine; the act of assuming or of being placed in a supine position. s. of the foot inversion and abduction of the… …   Medical dictionary

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