Thigh/Knee - Muscles

Question 1

Rectus Femoris

Answer 1

• Quadricep (front)
• Crosses hip and knee joint
• Originates from anterior iliac spine, AIIS (pelvis) and acetabulum (hip)
• Inserts onto patella through quadricep tendon which attaches to tibial tuberosity
• Knee extension, hip flexion

Question 2

Vastus lateralis

Answer 2

• Quadricep (largest) lateral side of thigh
• Originates from greater trochanter of femur and lateral lip of line aspera
• Inserts into the patella through quadricep tendon
• Extension of knee

Question 3

Vastus medialis

Answer 3

• Quadricep inner side of thigh
• Originates from intertrochanteric line of femur and medial lip of liner aspera
• Inserts onto patella through quadricep tendon
• Knee extension and stability

Question 4

Sartorius

Answer 4

• Front of thigh (longest muscle in the body)
• Originates from anterior superior iliac spine (ASIS)
• Inserts onto medial surface of tibia
• Flexion, Abduction, External rotation of the hip

Question 5

Adductor Group

Answer 5

• Inner side of thigh
• Includes: Adductor brevis, Adductor longus, Adductor Magnus, pectine and gracilis muscles
• Bring body parts towards midline of the body adductor

Question 6

Illiotibial tract

Answer 6

• Band of elastic tissue along outside of thigh
• Originates from tensor fasciae latae muscle and gluteus maximus
• Inserts onto lateral condyle of tibia
• Stabilises knee joint

Question 7

Biceps femoris

Answer 7

• Back of thigh
• Originates ischial tuberosity and linea aspera of femur
• Inserts at head of fibula near lateral malleolus

Question 8

Semimembranosus

Answer 8

• Back of thigh (hamstring)
• Originates from ischial tuberosity (pelvis)
• Inserts at posterior of medial condyle of tibia
• Knee flexion, Hip extension

Question 9

Semitendinosus

Answer 9

• Back of thigh (hamstring)
• Originates from ischial tuberosity (pelvis)
• Inserts into medial surface of upper tibia
• Knee flexion, Hip extension