Coxal (hip joint)

Question 1

Flexion (antagonists on extension)

Answer 1

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

Question 2

Extension (antagonists on flexion)

Answer 2

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

Question 3

Medial rotation (internal rotation) (antagonists on lateral rotation)

Answer 3

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

Question 4

Lateral rotation (external rotation) (antagonists on medial rotation)

Answer 4

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

Question 5

Abduction (antagonist on adduction)

Answer 5

• Gluteus maximus (all fibers)
• Gluteus medius (all fibers)
• Gluteus minimus
• Tensor fasciae latae
• Sartorius
• Piriformis (with hip flexed)

Question 6

Adduction (antagonist on abduction)

Answer 6

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