External rotation
External Rotation
External rotation (pronounced: ex-ter-nal ro-ta-tion) is a term used in anatomy and physiology to describe a specific movement of the body.
Etymology
The term "external rotation" is derived from the Latin words "externus" meaning "outside" and "rotatio" meaning "a turning".
Definition
External rotation refers to the outward turning or rotation of a joint or limb away from the body's midline. This movement is typically performed by specific rotator muscles and is a common action in many physical activities.
Related Terms
- Internal Rotation: The opposite of external rotation, internal rotation refers to the inward turning or rotation of a joint or limb towards the body's midline.
- Rotator Muscles: These are the muscles responsible for the rotation of a joint or limb. They include the rotator cuff muscles in the shoulder and the piriformis muscle in the hip.
- Pronation: This is a type of rotation that involves turning the palm or sole downwards.
- Supination: This is a type of rotation that involves turning the palm or sole upwards.
See Also
External links
- Medical encyclopedia article on External rotation
- Wikipedia's article - External rotation
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