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The gluteal lines are three curved lines outlined from three bony ridges on the exterior surface of the ilium in the gluteal region. [1] They are the anterior gluteal line; the inferior gluteal line, and the posterior gluteal line. The gluteus minimus, medius, and maximus are muscles that arise from the gluteal lines.
The space between the anterior and posterior gluteal lines and the crest is concave, and gives origin to the gluteus medius. Near the middle of this line a nutrient foramen is often seen. The inferior gluteal line (inferior curved line), the least distinct of the three, begins in front at the notch on the anterior border, and, curving backward ...
The gluteus medius muscle: originates on the outer surface of the ilium between the iliac crest and the posterior gluteal line above, and the anterior gluteal line below. The gluteus medius also originates from the gluteal aponeurosis that covers its outer surface. Gluteus minimus muscle originates between the anterior and inferior gluteal ...
The gluteus medius is a broad, thick, radiating muscle, situated on the outer surface of the pelvis. It lies profound to the gluteus maximus and its posterior third is covered by the gluteus maximus, its anterior two-thirds by the gluteal aponeurosis, which separates it from the superficial fascia and skin. The gluteus minimus is the smallest ...
The gluteus medius, one of the three gluteal muscles, is a broad, thick, radiating muscle.It is situated on the outer surface of the pelvis.. Its posterior third is covered by the gluteus maximus, its anterior two-thirds by the gluteal aponeurosis, which separates it from the superficial fascia and integument.
Both gluteus minimus and medius have the same function. Their primary function is abduction of the femur, while internal rotation and flexion can occur depending on the position of the femur. [4] Additionally, with the hip flexed, the gluteus minimus internally rotates the thigh. With the hip extended, gluteus minimus externally rotates the thigh.
The iliac fossa is bounded above by the iliac crest, and below by the arcuate line. It is bordered in front and behind by the anterior and posterior borders of the ilium. The iliac fossa gives origin to the iliacus muscle. [1] The obturator nerve passes around the iliac fossa. [2] It is perforated at its inner part by a nutrient canal.
The gluteus maximus straightens the leg at the hip; when the leg is flexed at the hip, the gluteus maximus extends it to bring the leg into a straight line with the body. [3] The anus also aligns when the leg is flexed at the hip, making the muscle tighten and the pelvis tilt forward.