Secondary tensor and supinator muscles of the human proximal radio-ulnar joint. 1986

M H Hast, and R E Perkins
Department of Otolaryngology, Northwestern University Medical School, Chicago, Illinois 60611.

A gross anatomical study was made of the human elbow. Three very small muscles were found that are not described in contemporary anatomical publications. A lateral tensor muscle of the annular ligament was observed in seven of every ten cadavers; its action is to tense or pull the annular ligament laterally during supination. A medial tensor muscle of the annular ligament was found in two of every ten cadavers; its action is to tense the annular ligament, pulling it medially and distally, and to assist in supination. An accessory supinator muscle was found in four of ten cadavers; its action is to assist in supination. These muscles would be synergistic to the primary supinator muscles of the radio-ulnar joint.

UI MeSH Term Description Entries
D008297 Male Males
D009132 Muscles Contractile tissue that produces movement in animals. Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D004551 Elbow Joint A hinge joint connecting the FOREARM to the ARM. Elbow Joints,Joint, Elbow,Joints, Elbow
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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