Group of six small muscles of the hip
Lateral rotator group |
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The lateral rotator group and the gluteus minimus muscle, posterior view |
Structures surrounding left hip joint |
Details |
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Origin | At or below the acetabulum of the ilium |
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Insertion | On or near the greater trochanter of the femur |
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Artery | Inferior gluteal artery, lateral sacral artery, superior gluteal artery |
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Nerve | Obturator nerve, nerve to the piriformis, nerve to quadratus femoris |
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Actions | Lateral rotation of hip |
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Antagonist | Gluteus minimus muscle, gluteus medius muscle |
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Anatomical terms of muscle [edit on Wikidata] |
The lateral rotator group is a group of six small muscles of the hip which all externally (laterally) rotate the femur in the hip joint. It consists of the following muscles: piriformis, gemellus superior, obturator internus, gemellus inferior, quadratus femoris and the obturator externus.[1]
All muscles in the lateral rotator group originate from the hip bone and insert on to the upper extremity of the femur. The muscles are innervated by the sacral plexus (L4-S2), except the obturator externus muscle, which is innervated by the lumbar plexus.[2]
Individual muscles
Other lateral rotators
This group does not include all muscles which aid in lateral rotation of the hip joint: rather it is a collection of ones which are known for primarily performing this action. Other muscles that contribute to lateral rotation of the hip include:
Additional images
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Muscles of
thigh as seen from the front
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Cross section of
pelvic region
See also
References
- ^ MedicalMnemonics.com: 833 3471 657
- ^ a b Bojsen-Møller, Finn; Simonsen, Erik B.; Tranum-Jensen, Jørgen (2001). Bevægeapparatets anatomi [Anatomy of the Locomotive Apparatus] (in Danish) (12th ed.). p. 365. ISBN 978-87-628-0307-7.
External links
- Glutealregion at The Anatomy Lesson by Wesley Norman (Georgetown University)