AK Hip and Pelvic Girdle Muscles

Iliopsoas

• Hip flexion

• Hip external rotation

• Anterior pelvic rotation

Rectus Femoris

• Hip flexion

• Knee extension

• Anterior pelvic rotation

Sartorius

• Hip flexion

• Knee flexion

• External rotation of thigh as it flexes hip & knee

• Abduction of hip

• Anterior pelvic rotation

• Weak internal rotation knee

Pectineus

• Hip flexion

• Hip adduction

• Anterior pelvic rotation

Adductor Brevis

• Hip adduction

• Assists in hip flexion and anterior pelvic rotation

Adductor longus

• Hip adduction

• Assists in hip flexion and anterior pelvic rotation

Adductor magnus

• Hip adduction

• External rotation as hip adducts

• Extension of hip

Gracilis

• Hip adduction

• Weak knee flexion

• Assists with hip flexion

• Weak internal knee rotation

Semitendinosus

• Knee flexion

• Hip extension

• Internal rotation of hip

• Internal rotation of flexed knee

• Posterior pelvic rotation

Semimembranosus

• Knee flexion

• Hip extension

• Hip internal rotation

• Internal rotation of flexed knee

• Posterior pelvic rotation

Biceps femoris

• Knee flexion

• Hip extension

• Hip external rotation

• External rotation of flexed knee

• Posterior pelvic rotation

Gluteus maximus

• Hip extension

• External rotation of hip

• Posterior pelvic rotation

Gluteus medius

• Hip abduction

• External rotation of hip

• Internal rotation of hip

• Lateral pelvic rotation to ipsilateral side

Gluteus minimus

• Hip abduction

• Internal rotation as femur abducts

• Lateral pelvic rotation to ipsilateral side

Tensor fasciae latae

• Hip abduction

• Hip flexion

• Tends to rotate hip internally as it flexes

• Anterior pelvic rotation

Six deep lateral rotator muscles

• Piriformis

• Gemellus superior

• Gemellus inferior

• Obturator externus

• Obturator internus

• Quadratus femoris

Hip flexion

• Psoas Major

• Iliacus (Iliopsoas)

• Rectus Femoris

• Pectineus

• Sartorius

• Tensor Fasciae Latae

Hip extension

• Gluteus Maximus

• Biceps Femoris (Long Head)

• Semitendinosus

• Semimembranosus

Hip abduction

• Gluteus Medius

• Tensor Fasciae Latae

• Gluteus Maximus

• Gluteus Minimus

Hip adduction

• Pectineus

• Adductor Brevis

• Adductor Longus

• Adductor Magnus

• Gracilis

Hip internal rotation

• Gluteus Minimus

• Gluteus Medius

• Tensor Fasciae Latae

Hip external rotation

• Gluteus Maximus

• Six Deep External Rotators

• Gluteus Medius