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| Pronator Teres | Psoas Major | Gluteus Maximus | Supinator | Piriformis | Iliacus | Brachialis |
|---|---|---|---|---|---|---|
| Action: Pronate the forearm, Assist to flex the elbow | Action: Flex the hip, Laterally rotatet the hip, Adduct the hip | Action: All fibers: Extend the hip, Laterally rotate the hip, Abduct the hip, Lower fibers: Adduct the hip | Action: Supinate the forearm | Action: Laterally rotate the hip, Abduct the hip when the hip is flexed | Action: Flex the hip, Laterally rotate the hip, Adduct the hip | Action: Flex the elbow |
| Origin: Medial epicondyle of the humerus, common flexor tendon and coronoid process of ulna | Origin: Bodies and transverse processes of lumbar vertebrae | Origin: Coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroiliac ligaments | Origin: Radial collateral ligament, annular ligament and supinator crest of the ulna | Origin: Anterior surface of sacrum | Origin: Iliac fossa | Origin: Distal half of anterior surface of humerus |
| Insertion: Middle of lateral surface of the radius | Insertion: Lesser trochanter | Insertion: Gluteal tuberosity, and iliotibial tract | Insertion: Lateral surface of proximal shaft of the radius | Insertion: Greater trochanter | Insertion: Lesser trocanter | Insertion: Tuberosity and coronoid process of ulna |