When referring to the ability to rotate your arm inward towards your body at the shoulder joint, known as medial rotation or internal rotation, the typical range varies.
Based on health and anatomical standards:
Normal Range of Medial Shoulder Rotation
The normal range of motion for medial rotation in a healthy shoulder is generally 70 to 90 degrees.
- This measurement refers to rotating your hand inward towards your stomach or across your body when your elbow is bent at 90 degrees.
- It's an essential movement for many daily activities and sports.
Reference Information:
This is medial rotation — also referred to as internal rotation — and the normal range of motion for a healthy shoulder is 70 to 90 degrees.13-Sept-2018
Understanding Shoulder Rotation
The shoulder is a ball-and-socket joint, allowing for a wide range of motion, including rotation. Rotation movements at the shoulder include:
- Medial (Internal) Rotation: Rotating the arm inward towards the midline of the body.
- Lateral (External) Rotation: Rotating the arm outward away from the midline of the body.
While the reference specifically provides the range for medial rotation, both movements are crucial for full arm function. The exact range can vary slightly from person to person due to factors like age, flexibility, and individual anatomy.
