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The sternalis muscle (TA: musculus sternalis 8), also known as rectus sternalis or parasternalis 7, is an uncommon chest wall accessory muscle and is of uncertain etiology and function. Its importance lies in that it should not be mistaken for a pathological lesion.
- Sternalis Muscle
The sternalis muscle runs from the jugular notch of the...
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- Sternalis Muscle
The sternalis muscle often originates from the upper part of the sternum and can display varying insertions such as the pectoral fascia, lower ribs, costal cartilages, rectus sheath, aponeurosis of the abdominal external oblique muscle.
The sternalis is a muscle that runs along the anterior aspect of the body of the sternum. There are two different theories as to what the Sternalis was meant to be connected to. One is the Pectoralis major, the other is the rectus abdominus, as in several cases the sternalis was actually found to have interlaced fibers with the rectus abdominus ...
Modality: Annotated image (Axial) - “ The sternalis muscle is an anatomical variant of the anterior chest wall and lay superficially and perpendicular to the pectoralis major muscle. I...”
Ultrasound imaging of the sternalis muscle reveals a well-defined, hypoechoic structure with internal striations, consistent with the appearance of skeletal muscle. Ideally, its continuity with chest wall muscles can be traced to prove muscular origin.
16 sty 2014 · When present and detected preoperatively it can be used as a muscular flap in reconstructive surgeries of the breast and neck. This article will present the sternalis muscle with special emphasis on its morphology, homology, and clinical significance.
The sternalis muscle is a normal anatomic variant, present in 6 - 8% of people. It can be misinterpreted as a potentially worrisome mass on a screening mammogram, leading to unnecessary extra views, diagnostic workups and even biopsies.
