Podvzdoshnopoyasnichnaya muscle (m. iliopsoas), flexes the thigh at the hip, rotating it outward. For a fixed position the hip flexes the lumbar and pelvis, torso forward. The muscle is formed by connecting a large psoas muscle (m. psoas major) and iliacus (m. iliacus). Most psoas muscle is a long, spindle-shaped starting from the lateral surface of the body I-IV and XII of the lumbar vertebrae thoracic vertebrae. iliacus is triangular in shape and fills the iliac fossa, which is located on the walls of the start point of the muscle. Both muscles are connected to the attachment point, which is located on a small spit of the femur. Between the joint capsule and tendon muscle is podvzdoshnogrebeshkovaya bag (bursa iliopectinea).
Small psoas (m. psoas minor) pulls the iliac fascia. Inconstant muscle is spindle shaped and located on the front surface of the large psoas muscle. Point of beginning is on the lateral surface of the lumbar bodies I and XII thoracic vertebrae, and place attachment - to the iliac crest of the fascia and the pubic bone.
Piriformis muscle (m. piriformis) rotates the thigh outwards and takes part in his abduction. The muscle is in the form of a flat isosceles triangle. It starts from the front (pelvic) surface of the sacrum, out of the pelvic cavity through the large sciatic hole and attached to the top of the trochanteric pelvic bone. In the muscle attachment point is the mucous bag piriformis muscle (bursa m. piriformis). The muscle fills the ischium large hole, forming a top nadgrushevidny, and bottom - podgrushevidny gaps through which the blood vessels and nerves.
Internal locking arm (m. obturatorius internus) rotates the thigh outwards. This is a flat muscle with fan-beam direction. The point of beginning is located on the inner surface of the pelvic bone around the sealing membrane. Muscle out of the pelvic cavity through a small hole and attach the ischium in a vertical fossa of the femur. Between muscle and the locking groove pubic bone, a small gap - the locking channel (canalis obturatorius), through which blood vessels and nerve.
The oil muscle (m. coccygeus), cutting, taking part in strengthening the pelvic walls. Rudimentary muscle is a thin plate with a small amount of muscle bundles. Its start point is located at the ischial spine, and the mounting position - on the outer surface of the lower two sacral and two or three upper coccygeal vertebrae.
a., aa. — arteria, arteriae (artery, the artery)
lig., ligg. — ligamentum, ligamenta (ligament, the ligaments)
m., mm. — musculus, musculi (muscle, the muscle)
n., nn. — nervus, nervi (nerve, the nerve)
r., rr. — ramus, rami (branch)
s. — seu (or)
v., vv. — vena, venae (vienna)