Musculus obturatorius internus
An anatomical
illustration from the 1909 edition of Sobotta"s Atlas and Text-book of Human Anatomy with English terminology.
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Obturator
internus muscle • Obturator internus (Gray's illustration) - Ganzer Fall bei Radiopaedia
The obturator internus muscle, like the piriformis muscle, is both a muscle of the pelvic wall and of the gluteal region. It originates within the pelvis, and continues as a flattened tendon posteriorly through the lesser sciatic foramen (between ischial spine and tuberosity).
Summary
- origin
- anterolateral wall of true pelvis
- deep surface of obturator membrane and pelvic surfaces of pubis and ischium
- insertion: medial side of greater trochanter of femur
- action
- laterally rotates the extended femur at hip joint
- abducts the flexed femur at hip joint
- arterial supply: inferior gluteal artery
- innervation: nerve to the obturator internus
- relations:
- posterior: the sciatic nerve and sacrotuberous ligament contact its posterior aspect
- anterior: the nerve to quadratus femoris
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Musculus obturatorius internus: