Variant form of Sternalis Muscle with Bifurcated End: Case Report

Kumar, Naveen and Patil, Jyothsna and Guru, Anitha and Shetty, SD and Aithal, A and Nayak, Satheesha B (2013) Variant form of Sternalis Muscle with Bifurcated End: Case Report. OA Case Reports, 24 (2). pp. 1-2.

[img] PDF
sternalis-OA.pdf - Published Version
Restricted to Registered users only

Download (827kB) | Request a copy


Introduction The anterior thoracic wall is often encountered with the presence of accessory muscles. Very often, it is the sternalis muscle. In anatomical literature, it has been highlighted with various synonyms such as rectus sternalis, presternalis or parasternalis. This article reports a case of an atypical sternalis with a bifurcated end. Case Report We report here a variant type of this muscle lying superficial to the left pectoralis major with a bifurcated end at its site of insertion. It originated from the left fourth costal cartilage close to the costochondral junction. Then, it ascended upwards about 10 cm and bifurcated into tendinous and fascial slips. The tendinous slip crossed the midline and attached to the deeper surface of the right pectoralis major and the fascial slip blended with the ipsilateral pectoral fascia. Conclusion Precise anatomical details on these accessory muscles with its unusual morphology in the thoracic region would add a great deal in the execution of successful reconstructive procedures as well as avoid misinterpretation in certain procedures like mammography.

Item Type: Article
Subjects: Medicine > MMMC Manipal > Anatomy
Depositing User: KMC Manipal
Date Deposited: 21 Jun 2014 04:43
Last Modified: 21 Jun 2014 04:43

Actions (login required)

View Item View Item