Pelvis and Thigh

Question 1

Adductor Brevis

Answer 1

• Adduct the hip
• Medially rotates the hip
• Assist to flex the hip

Question 2

Adductor Longus

Answer 2

• Adduct the hip
• Medially rotate the hip
• Assist to flex the hip

Question 3

Adductor Magnus

Answer 3

• Adduct the hip
• Medially rotates the hip
• Assist to flex the hip

Question 4

Biceps Femoris

Answer 4

• Flex the knee
• Laterally rotates the flexed knee
• Tilt the pelvis posteriorly
• Extend the hip (Long Head)
• Assist to laterally rotate the hip (Long Head)

Question 5

Gemellus Inferior

Answer 5

Laterally rotate the hip

Question 6

Gemellus Superior

Answer 6

Laterally rotate the hip

Question 7

Gluteus Maximus

Answer 7

• Extend the hip (all fibers)
• Laterally rotate the hip (all fibers)
• Abduct the hip (all fibers)
• Adduct the hip (lower fibers)

Question 8

Gluteus Medius

Answer 8

• Abduct the hip (all fibers)
• Flex the hip (Anterior fibers)
• Medially rotate the hip (Anterior fibers)
• Extend the hip (posterior fibers)
• Laterally rotate the hip (Posterior Fibers)

Question 9

Gluteus Minimus

Answer 9

• Abduct the hip
• Medially rotate the hip
• Flex the hip

Question 10

Gracilis

Answer 10

• Adduct the hip
• Medially rotate the hip
• Flex the knee
• Medially rotate the flexed knee

Question 11

Iliacus

Answer 11

• Flex the hip (W/origin fixed)
• May laterally rotate the hip (W/origin fixed)
• FLex the trunk toward the thigh (W/ insertion fixed)
• Tilt pelvis anteriorly (W/ Insertion fixed)

Question 12

Obturator Externus

Answer 12

*Laterally rotate the hip

Question 13

Obturator Internus

Answer 13

Laterally rotate the hip

Question 14

Pectineus

Answer 14

• Adduct the hip
• Medially rotate the hip
• Assist to flex the hip

Question 15

Piriformis

Answer 15

• Laterally rotate the hip

* Abduct the hip when the hip is flexed

Question 16

Psoas Major

Answer 16

• Flex the hip (W/origin fixed)
• May laterally rotate the hip (W/ origin fixed)
• Flex trunk toward the thigh (W/ insertion fixed)
• Tilt pelvis anteriorly (W/ insertion fixed)
• Assist to laterally flex the lumbar spine (Unilaterally)