Knee (muscles)

Question 1

What are the muscles involved in knee flexion (hint: there are 6)

Answer 1

• gastrocnemius (lateral and medial head)
• biceps femoris (long and short head)
• semitendinosus
• semimembranosus
• sartorius
• gracillis

Question 2

What are the muscles involved in knee extension

Answer 2

• rectus femoris
• vastus lateralis
• vastus medialis
• vastus intermedius
• tensor fasciae latae

Question 3

What muscles are involved in lateral (external) and medial (internal) knee rotation?

Answer 3

• hamstrings : biceps femoris, semitendinosus, semimembranosus
• sartorius
• gracillis
• popliteus