With the leg free from support, the pear-shaped muscle shows a great strength: by contracting it, you can turn the thigh outward. Retracts the 90 ° bent femur.
With a simultaneous reduction of all of its fibers, the hip is removed. With a free leg, its front fibers rotate the thigh inward. When the anterior fibers contract, the thigh rotates internally (permeates) like the middle gluteus muscle.
The middle gluteus muscle is the most powerful abductor of the thigh. The front group of her beams rotates the thigh slightly inwards. Basically, the muscle is responsible for stabilizing the pelvis when carrying the weight of the body on one leg.
Unbends the hip in the hip joint, turning it slightly outward. By cutting the upper part of the gluteus major muscle, the thigh is retracted. The lower part of the large gluteus muscle, contracting, helps to pull the bent femur against a large load.
The iliopsoas muscle flexes the thigh. Also slightly helps with external hip rotation, sometimes helps to lift the hip. Helps bend the lumbar spine if the body is tilted forward.
Trigger zones of this muscle often cause pain in the shoulder and shoulder area. Typical for hitting the posterior upper cog muscle is a dull deep pain under the upper edge of the scapula.
Involvement in the process of the deepest of the invertebral muscles-rotators causes pain along the middle line of the back and reflected pain during percussion of adjacent spinous processes.
Rotation of the spine is performed by semi-oval muscles, divided muscles, rotator muscles (rotators), oblique abdominal muscles with unilateral contraction, some action is rendered by rhomboid muscles and the posterior upper jagged muscle.
When unilateral reduction takes part in the inclination of the spine with the thorax. With tonic contraction on both sides, it holds the spine in an upright position.
