| Lateral rotator group | |
|---|---|
 The lateral rotator group and the gluteus minimus muscle, posterior view | |
 Structures surrounding left hip joint | |
| Details | |
| Origin | At or below the acetabulum of the ilium |
| Insertion | On or near the greater trochanter of the femur |
| Artery | Inferior gluteal artery, lateral sacral artery, superior gluteal artery |
| Nerve | Obturator nerve, nerve to the piriformis, nerve to quadratus femoris |
| Actions | Lateral rotation of hip |
| Antagonist | Gluteus minimus muscle, gluteus medius muscle |
| Anatomical terms of muscle | |
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]
- ^ MedicalMnemonics.com: 833 3471 657
- ^ 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.