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Low. Extremity Musc.
Hip, Knee, Ankle & Foot Muscles
| Question | Answer |
|---|---|
| Iliopsoas | Prime Mover: Hip Flexion Action(s): Hip Flexion |
| Sartorius | Prime Mover: Hip External Rotation Action(s): Hip Flexion/Abduction/External Rotation; Knee Flexion |
| Adductor Magnus | Prime Mover: Hip Adduction Action(s): Hip Adduction/External Rotation |
| Adductor Longus | Prime Mover: None Action(s): Hip Adduction/Flexion/External Rotation |
| Gluteus Maximus | Prime Mover: Hip Extension Action(s): Hip Extension (esp. with knee flexed)/External Rotation |
| Gluteus Medius | Prime Mover: Hip Abduction Action(s): Hip Abduction/Internal Rotation |
| Gluteus Minimus | Prime Mover: Hip Internal Rotation Action(s): Hip Abduction/Internal Rotation |
| Quadriceps | Prime Mover: Knee Extension Muscles that make up Quad: Rectus Femoris, Vastus Lateralis, Intermedius and Medialis |
| Rectus Femoris | Prime Mover: Knee Extension Action(s): Hip Flexion (w/ Straight Leg Raising), Knee Extension |
| Vastus Lateralis, Intermedius and Medialis | Prime Mover: Knee Extension Action(s): Knee Extension (Medialis- last 10-15 degrees) |
| Hamstrings | Prime Mover: Knee Flexion Muscles that make up Ham: Biceps Femoris, Semitendinosis, Semimembranosis |
| Biceps Femoris | Prime Mover: Knee Flexion Action(s): Knee Flexion |
| Semitendinosis, Semimembranosis | Prime Mover: Knee Flexion Action(s): Knee Flexion, Hip Extension (w/ knee extended) |
| Anterior Tibialis | Prime Mover: Ankle Dorsiflexion Action(s): Ankle Dorsiflexion/Inversion (antagonist of Peroneus Longus, Brevis & Tertius, co-synergist of Peroneus Tertius) |
| Peroneus Longus | Prime Mover: Ankle Eversion Action(s): Ankle Plantar Flexion/Eversion (antagonist of Anterior Tibialis, co-synergist of Peroneus Tertius) |
| Peroneus Brevis | Prime Mover: None Action(s): Ankle Plantar Flexion/Eversion (antagonist of Anterior Tibialis, co-synergist of Peroneus Tertius) |
| Peroneus Tertius | Prime Mover: None Action(s): Ankle Dorsiflexion/Eversion (antagonist of Anterior Tibialis, co-synergist of Anterior Tibialis, Peroneus Longus & Brevis) |
| Posterior Tibialis | Prime Mover: Ankle Inversion Action(s): Ankle Plantar Flexion/Inversion |
| Gastrocnemius | "Calf Muscle" Prime Mover: Ankle Plantar Flexion Action(s): Knee Flexion, Ankle Plantar Flexion |
| Soleus | Prime Mover: None Action(s): Ankle Plantar Flexion |
| Flexor Digitorum Longus | Action(s): Flexion of 4 lesser toes, Ankle Plantar Flexion/Inversion |
| Flexor Hallicis Longus | Action(s): Flexion of great toe, Ankle Plantar Flexion/Inversion |
| Extensor Digitorum Longus | Action(s): Extension of 4 lesser toes, Ankle Dorsiflexion |
| Extensor Digitorum Brevis | Action(s): Extension of 4 lesser toes |
| Extensor Hallicis Longus | Action(s): Extension of great toe, Ankle Dorsiflexion |
| "Tom, Dick & Harry" | Posterior Tibialis, Flexor Digitorum Longus, Flexor Hallicis Longus: All Plantar Flexors & Invertors |
| Hip Flexion | Prime Mover: Iliopsoas Other(s): Adductor Longus, Rectus Femoris, Sartorius |
| Hip Extension | Prime Mover: Gluteus Maximus Other(s): Semitendinosis, Semimembranosis |
| Hip Abduction | Prime Mover: Gluteus Medius Other(s): Gluteus Minimus, Sartorius |
| Hip Adduction | Prime Mover: Adductor Magnus Other(s): Adductor Longus |
| Hip Internal Rotation | Prime Mover: Gluteus Minimus Other(s): Gluteus Medius |
| Hip External Rotation | Prime Mover: Sartorius Other(s): Adductor Magnus, Adductor Longus, Gluteus Maximus |
| Knee Flexion | Prime Mover: Hamstrings (Biceps Femoris, Semitendinosis, Semimembranosis) Other(s): Sartorius, Gastrocnemius |
| Knee Extension | Prime Mover: Quadriceps (Rectus Femoris, Vastus Lateralis, Intermedius, Medialis) Other(s): None |
| Dorsiflexion | Prime Mover: Anterior Tibialis Other(s): Peroneus Tertius, Extensor Digitorum Longus, Extensor Hallicis Longus |
| Plantar Flexion | Prime Mover: Gastrocnemius Other(s): Peroneus Long, Peroneus Brevis, Posterior Tibialis, Soleus, Flexor Digitorum Longus, Flexor Hallicis Longus |
| Inversion | Prime Mover: Posterior Tibialis Other(s): Anterior Tibialis, Flexor Digitorum Longus, Flexor Hallicis Longus |
| Eversion | Prime Mover: Peroneus Longus Other(s): Peroneus Brevis, Peroneus Tertius |