What is the sternalis muscle?

What is the sternalis muscle?

The sternalis is an accessory muscle that can originate from the upper sternum and the infraclavicular region, which inserts upon the anterior pectoral fascia, the lower ribs, the costal cartilages, the sheath of the rectus abdominis muscle, and the aponeurosis of the abdominal external oblique muscle.

What is rectus sternalis muscle?

Rectus Sternalis is one of the important muscles of anterior chest wall musculature. The location of muscle and direction of fibres suggest that this muscle may help in elevating the lower chest wall. Occurrence of Rectus Sternalis is rare but it is not the rarest and it has racial and regional variations.

Where is the sternalis located?

Background. The sternalis muscle is an anatomical variant of the anterior thoracic region musculature well documented and familiar to anatomists but quite unknown among clinicians and radiologists [1]. It lies superficially and perpendicular to the pectoralis major muscle and parallel to the sternum.

How common is sternalis muscle?

Results: The sternalis muscle was present in 86 (6.2%) of 1387 patients. This muscle was more common in female (44 of 597, 7.3%) than in male (42 of 790, 5.3%) patients, but statistical significance was not noted (P=0.058). Twenty-three patients showed bilateral sternalis muscles.

How is linea alba formed?

The linea alba (Latin for white line) is a single midline fibrous line in the anterior abdominal wall formed by the median fusion of the layers of the rectus sheath medial to the bilateral rectus abdominis muscles. It attaches to the xiphoid process of the sternum and the pubic symphysis.

Is Poland syndrome genetic?

Inheritance. Most cases of Poland syndrome are sporadic, which means they are not inherited and occur in people with no history of the disorder in their families. Rarely, this condition is passed through generations in families.

What is Pyramidalis muscle?

Pyramidalis is a small triangular muscle located anterior to the lower part of rectus abdominis muscle within the rectus sheath. It is attached by tendinous fibres to anterosuperior margin of pubis and by the ligamentous fibres in front of the pubic symphysis.

What is musculoskeletal pain in the chest?

Musculoskeletal chest pain includes pain related to the anterior chest wall bony and cartilaginous structures, chest wall musculature, and the thoracic spine.

Is the linea alba a muscle?

Even though the linea alba is not a muscle, Terminologia Anatomica lists it under abdominal muscles. Why would that be? It’s because the linea alba is formed by the interlacing aponeuroses of three vertical abdominal muscles: external oblique, internal oblique and transversus abdominis muscles.

What muscles meet at the linea alba?

Linea alba function It is formed by the fusion of the aponeuroses (sheathlike tendons) of the external oblique, internal oblique, and transversus abdominis muscles form the rectus sheaths, which enclose the rectus abdominis muscles. The sheaths meet at the midline to form the linea alba.

Is Poland’s syndrome a disability?

People born with Poland anomaly have several physical and cosmetic disabilities, which can be treated if correctly diagnosed. Although severity and associated features vary from patient to patient, there are some common characteristics of this condition: Absence (aplasia) of some of the chest (pectoralis) muscles.

Is Poland syndrome serious?

Rarely, Poland syndrome can cause spinal health complications. It may also lead to kidney problems. Severe cases may lead to a misplacement of the heart on the right side of your chest.