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Hip and Knee Muscles
Muscle | Action | Prime Mover |
---|---|---|
sartorius (longest muscle) | hip flexion/abduction/ER; knee flexion | hip ER |
adductor magnus | hip adduction/ER | hip adduction |
adductor longus | hip adduction/flexion/ER | |
gluteus maximus | hip extension (esp. w/ knee flexed)/ ER | hip extension |
gluteus medius | hip abduction/IR | hip abduction |
gluteus minimus | hip abduction/IR | hip IR |
quadriceps | hip flexion (w/ SLR)/ Knee extensions | knee ext. |
vastus lateralis; vastus intermedius; vastus medialis | knee extension (vastus medialis- last 10-15 degrees) | |
biceps femoris | knee flexion | |
semitendinosis; semimembranosis | knee flexion; hip extensions (w/ knee extended) | |
Hamstrings | Knee Flexion | Antagonist to quads |
iliopsoas (psoas major & iliacus) | hip flexion | hip flexion |