LOWER LIMB SYNERGISTS (PELVIS & THIGH)

What muscles flex the hip

Psoas major, Iliacus, Tensor fasciae latae, Sartorius, Rectus femoris, Gluteus medius (anterior fibers), Gluteus minimus, Adductor longus, Pectineus, Adductor brevis

What muscles extend the hip

Gluteus maximus (all fibers), Biceps femoris (long head), Semitendinosus, Semimembranosus, Adductor magnus (posterior fibers), Gluteus medius (posterior fibers)

What muscles abduct the hip

Gluteus maximus (upper fibers), Gluteus medius (all fibers), Gluteus minimus, Tensor fasciae latae, Sartorius, Piriformis (when hip is flexed)

What muscles adduct the hip

Adductor magnus, Adductor longus, Adductor brevis, Pectineus, Gracilis, Gluteus maximus (lower fibers)

What muscles laterally rotate the hip

Gluteus maximus (all fibers), Piriformis, Quadratus femoris, Obturator internus, Obturator externus, Gemellus superior, Gemellus inferior, Sartorius, Gluteus medius (posterior fibers), Psoas major, Iliacus, Biceps femoris (long head)

What muscles medially rotate the hip

Gluteus medius (anterior fibers), Gluteus minimus, Tensor fasciae latae, Adductor magnus, Adductor longus, Adductor brevis, Pectineus, Gracilis, Semitendinosus, Semimembranosus

What muscles flex the knee

Biceps femoris, Semitendinosus, Semimembranosus, Sartorius, Gracilis, Gastrocnemius, Popliteus, Plantaris

What muscles extend the knee

Rectus femoris, Vastus medialis, Vastus lateralis, Vastus intermedius

What muscles medially rotate the flexed knee

Semitendinosus, Semimembranosus, Sartorius, Gracilis, Popliteus

What muscles laterally rotate the flexed knee

Biceps femoris