Lateral rotation

Definition

Lateral rotation is a movement where a limb or body part rotates away from the midline of the body. This type of rotation occurs in joints like the shoulder and hip.

5 Must Know Facts For Your Next Test

1. Lateral rotation occurs primarily at ball-and-socket joints, such as the shoulder and hip.
2. Muscles involved in lateral rotation include the infraspinatus and teres minor for the shoulder, and the gluteus maximus for the hip.
3. Lateral rotation can be contrasted with medial rotation, which involves turning toward the body's midline.
4. This movement is crucial for various activities like throwing a ball or performing certain dance moves.
5. Injury or weakness in muscles responsible for lateral rotation can impair mobility and function.

Review Questions

• Which joints are primarily involved in lateral rotation?
• Name two muscles responsible for lateral rotation of the shoulder.
• How does lateral rotation differ from medial rotation?

Related terms

Medial Rotation: A movement where a limb or body part rotates toward the midline of the body.

Ball-and-Socket Joint: A type of synovial joint that allows for rotational movements along multiple axes.

Infraspinatus Muscle: A muscle located on the scapula that plays a key role in lateral rotation of the shoulder.