Sahoo Sanjukta, Banik Suranjana
Anatomy, All India Institute of Medical Sciences, Bhubaneswar, Bhubaneswar, IND.
Cureus. 2021 Mar 30;13(3):e14185. doi: 10.7759/cureus.14185.
Discovery and variations of rectus sternalis muscle are occasionally seen in humans. However, during routine academic dissection of an adult male embalmed cadaver, a rare variant of the muscle was identified. The muscle had origin from the pectoral muscle and fascia and was inserted into external oblique aponeurosis along with the sixth rib and cartilage. It had double slips with the partial merging of the bellies. Knowledge regarding such unique muscle is important to anatomists for medical education as well as to surgeons during thoracic surgeries, in craniocaudal mammography where it can mimic breast mass and for using as muscle flap in the anterior chest wall, head and neck, and breast reconstructions.
胸骨直肌的发现及变异在人类中偶尔可见。然而，在对一具成年男性防腐尸体进行常规学术解剖时，发现了该肌肉的一种罕见变异。该肌肉起自胸肌和筋膜，与第六肋及肋软骨一起止于腹外斜肌腱膜。它有双肌束，肌腹部分融合。了解这种独特的肌肉对于解剖学家进行医学教育很重要，对于胸外科手术中的外科医生、在头尾位乳腺摄影中（其可能会模仿乳腺肿块）以及在前胸壁、头颈部和乳房重建中用作肌瓣也很重要。
