Muscle Actions Pelvis, Hip, Knee, and Ankle

Knee Flexion

Hamstrings (Biceps Femoris, Semitendinosus, semimembranosus) gracilis, sartorius, gastrocenemius, popliteus, plantaris

knee extension

Quadriceps (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius)

Plantar Flexion

gastrocnemius, soleus, plantaris, tibialis posterior, flexor hallucis longus, flexor digitorum longus, fibula’s longus and brevis

dorsiflexion

tibialis anterior , extensor digitorum longus, extensor hallucis longus

Inversion

TIbiali posterior, Tibialis Anterior, extensor Hallucis longus, flexor digitorum longus, flexor hallucis longus

Eversion

Fibularis Longus/Brevis, Extensor Digitorum Longus

Toe Extension

Extensor Digitorum Longus

Toe Flexion

Flexor Digitorum Longus

Hip Flexion

Iliopsoas, gluteus medius, gluteus minimus, TFL, Pectineus, Adductor Longus, Adductor Brevis, Gracilis, Adductor Magnus, Rectus Femorus, Sartorius,

Hip Extension

gluteus maximus, gluteus medius, hamstrings (semimembranosus, semitendinosus, biceps femoris LONG HEAD), adductor Magnus

Internal Hip Rotation

gluteus medius, gluteus minimus, TFL, Pectineus, adductor longus, adductor brevis, gracilis, adductor Magnus

Hip External (lateral) rotation

Sartorius, gluteus medius, gluteus maximus, iliopsoas, Piriformis, obturator interns/externus, gemelli, quadratus femoris,

Hip ABduction

gluteus maximus, gluteus medius, gluteus minimus, TFL, sartorius,

Hip ADduction

Pectineus, adductor longus, adductor brevis, gracilis, adductor Magnus,

Anterior Pelvic Tilt on Pelvis

iliopsoas, TFL, rectus femoris, sartorius

Posterior Tilt of Pelvis

hamstrings (Semimembranosus, Semitendinosus, Biceps Femoris, gluteus maximus

What action does the Iliopsoas have on the spine in the frontal plane (CLOSED CHAIN - UNILATERAL)

lateral flexion

what action does the iliopsoas have on the sagittal plane spine (closed chain bilateral)

trunk flexion