Triceps brachii muscle demonstrating a fourth head.

Academic Article


  • Variations of the triceps brachii muscle are apparently rare. We report an additional attachment site of the medial head of the triceps brachii found on the left side of a male cadaver. This head originated from the posterior aspect of the surgical neck of the humerus. Clinicians diagnosing or treating patients with weakness or pain of the posterior arm should consider anomalous muscles in this region that may result in neurovascular compression.
  • Authors

    Published In

  • Clinical Anatomy  Journal
  • Keywords

  • Aged, Arm, Cadaver, Genetic Variation, Humans, Male, Muscle, Skeletal, Radial Nerve, Tendons
  • Digital Object Identifier (doi)

    Pubmed Id

  • 24617937
  • Author List

  • Tubbs RS; Salter EG; Oakes WJ
  • Start Page

  • 657
  • End Page

  • 660
  • Volume

  • 19
  • Issue

  • 7