What is Major?
PSOAS Major is a muscle found on the front of the hip, which is responsible for bending the hip or bending the leg forward due to the trunk and the lateral rotating hip or turning the foot out. PSOAS is often used as an abbreviation for the Iliopsoas group, which consists of PSOAS Major and Iliacus. In some cases, PSOAS has a division known as PSOAS Minor. In summary, these muscles are commonly referred to as hip flexors, although this term may also include other muscles that bend hips such as tensor fasciae Latae and rectus femoris. In a large percentage of the population, this muscle can become a very short, tight and excessively active, often the result of sitting for a long time.
The spine is psoas Major muscle muscles. It has both deep and superficial fibers, with a deep layer found near the spine and a surface layer above it, closer to the skin. The deep layer fibers are produced by tendencyons connected to transverse processes or hip bone projections from all five lumbar vertebrae, L1-L5.Above this, the superficial fibers are based on the bodies of the thoracost, T12 and the first four lumbar vertebrae, L1-L4, as well as intervertebral discs.
descending along both sides of the spine, PSOAS Major intersects the ridge of the iliakal bone, a large bone in the shape of a hip wing. Here it is associated with Iliacus muscle and together are known as Iliopsoas. They are distinguished as the only muscle unit of the fact that both are enclosed in iliakal fascia, a vagina of fibrous tissue that compartes muscles. Iliopsoas, which crosses the hair, continues down to put it deep into the thigh on a smaller trochanter, a small bony protrusion on the upper edge of the thigh bone.
As the main cross PSOASES just in front of the hip joint, it is together with Iliacus the primary bend of the hip, whether when bending the trunk forward on the hips or when lifting the legs due to the trunk. This event can be seen in the PROVMilitary style and hanging and lifting both legs in front of the body. Another PSOAS action is an outer or side rotation in which the thighs turn out on the hip, as can be seen at the ballet dancer with the feet. Iliopsoas is particularly powerful when the hip flexion and external rotation are performed simultaneously. An example of this is sprinting, because during a running step the knee tends to be brought in front of the body and slightly to the outside than directly in front of the hip bone.