Encyclopedia entry
Accessory Supinator
Abstract
The accessory supinator was found in 21 of 63 forearms, bilaterally in 8 of 27 cadavers, and in 8 of 20 males and in 7 of 16 female cadavers. With only one exception, the muscle was always found lateral to the annular ligament. The muscle originates from the coronoid process of the ulna just lateral to the ulnar tuberosity, and inserts onto the radial tuberosity, posterior to the insertion of the biceps tendon. Its action is to assist in the supination of the forearm. LeDouble mentions that these accessory supinator muscles have been overlooked by recent, nineteenth century, anatomists.
The accessory supinator was found in 21 of 63 forearms, bilaterally in 8 of 27 cadavers, and in 8 of 20 males and in 7 of 16 female cadavers. With only one exception, the muscle was always found lateral to the annular ligament. The muscle originates from the coronoid process of the ulna just lateral to the ulnar tuberosity, and inserts onto the radial tuberosity, posterior to the insertion of the biceps tendon. Its action is to assist in the supination of the forearm.
LeDouble mentions that these accessory supinator muscles have been overlooked by recent, nineteenth century, anatomists. See Supinator .
Anatomical classification
- Systems:
- Muscular system
Content provenance
Adaptation
Adaptation of «Accessory Supinator — Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System» by Ronald A. Bergman, Adel K. Afifi, Ryosuke Miyauchi. Source: https://www.anatomyatlases.org/AnatomicVariants/MuscularSystem/Text/A/20Accessory.shtml Original work distributed under the CC BY-NC-SA 4.0 licence (https://creativecommons.org/licenses/by-nc-sa/4.0/deed.it). Adaptation by Redazione AIVA. Changes from the original: Testo originale inglese riprodotto integralmente e riorganizzato nel formato scheda del portale (sintesi, testo, riferimenti), senza modificarne le affermazioni. La traduzione italiana non è ancora stata eseguita, e la pagina lo dichiara. Le figure non sono state copiate: sono collegate alla pagina d’origine. This publication is not approved or endorsed by the authors of the original work.
Licence
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