Anterior Lower Limb Muscles

Question 1

What are the anterior lower limb muscles?

Answer 1

• Iliopsoas
• Quadriceps femoris
• Tibialis anterior

Question 2

What are the movements of iliopsoas?

Answer 2

• Flexion of thigh at hip
• Flexion of trunk at hip
• External rotation of thigh at hip
• Lateral flexion of trunk (psoas major only)

Question 3

What are the attachments of the iliopsoas?

Answer 3

• Origin: Iliacus- iliac fossa, posts major- vertebral bodies T12-L4, intervertebral discs, between T12-L4, costal processes of L1-L5 vertebrae
• Insert: both into lesser trochanter of femur

Question 4

What are the 4 muscles that form the quadriceps femoris?

Answer 4

• Rectus femoris
• Vastus medialis
• Vastus lateralis
• Vastus intermedius

Question 5

What are the movements of quadriceps femoris?

Answer 5

• Hip joint, thigh flexion- rectus femoris only

- Knee joint- leg extension

Question 6

What is the origin of rectus femoris?

Answer 6

• Anterior inferior iliac spine, superior margin of acetabulum of hip bone

Question 7

What is the origin of vastus medialis?

Answer 7

• Intertrochanteric line of femus

Question 8

What is the origin of vastus lateralis?

Answer 8

• Linea aspera, greater trochanter of femur

Question 9

What is the origin of vastus intermedius?

Answer 9

• Anterior surface of shaft of femur

Question 10

Where does quadriceps femoris?

Answer 10

• Tuberosity of tibia (via patellar ligament)

Question 11

What are the movements of tibias anterior?

Answer 11

• Dorsiflexion of talocrural joint

- Inversion of subtler joint

Question 12

What are the attachments of tibias anterior?

Answer 12

• Origin: lateral condyle and lateral surface of tibia and interosseous membrane of leg
• Insert: base of 1st metatarsal bone and medial cuneiform bone