Summary
A subclavius posticus muscle was found in the left side of a Japanese male cadaver. This muscle arose from the first costal cartilage, inserted to the upper margin of the scapula, and was innervated by a branch from the nerve to the subclavius. This excess intermediary muscle between the subclavius and the inferior belly of the omohyoid appears to be more closely related to the subclavius, based on detailed examination of the innervation of this muscle. A possible schematic model of the origin of this muscle is proposed.
Résumé
Un muscle subclavius posticus a été découvert du côté gauche d'un cadavre Japonais de sexe masculin. Ce muscle s'étendait du premier cartilage costal au bord supérieur de la scapula et était innervé par une branche du nerf du m. subclavier. Ce muscle accessoire situé entre le m. subclavier et le ventre inférieur du m. omo-hyoïdien semblait plus étroitement lié au m. subclavier en raison des conclusions de l'analyse détaillée son innervation. Une proposition de modèle schématique de l'origine de ce muscle est avancée.
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Akita, K., Tsuboi, Y., Sakamoto, H. et al. A case of muscle subclavius posticus with special reference to its innervation. Surg Radiol Anat 18, 335–337 (1996). https://doi.org/10.1007/BF01627613
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DOI: https://doi.org/10.1007/BF01627613