Movements of the Knee Joint

Extension:

Definition: Straightening the knee joint by moving the lower leg away from the hamstring.
Image:
Muscles
Involved:
Exercises:

Flexion:

Definition: Bending the knee joint by moving the lower leg toward the hamstring.
Image:
Muscles
Involved:
Exercises:
  • Leg curl
  • Glute-ham raise
  • Romanian deadlift (static knee flexion)

External Rotation (Lateral Rotation):

Definition: Rotating the lower leg and foot laterally (outward), with a bent knee joint.
Image:
Muscles
Involved:
Exercises:
  • Knee external rotation

Internal Rotation (Medial Rotation):

Definition: Rotating the lower leg and foot medially (inward), with a bent knee joint.
Image:
Muscles
Involved:
Exercises:
  • Knee internal rotation

About the Author Alex

Hey! My name is Alex, and I'm the owner and author of King of the Gym. I started this website back in late 2009 during college, and it has been my pet project ever since. My goal is to help you learn proper weight training and nutrition principles so that you can get strong and build the physique of your dreams!

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