Why is scapula rotation important for shoulder abduction?

Why is scapula rotation important for shoulder abduction?

Upward rotation of the scapula on the thorax is the primary motion of the scapula observed during active elevation of the arm and plays a significant role in increasing the range of elevation of the arm overhead. This motion places the glenoid fossa in a position to support and stabilize the head of the raised humerus.

What is the movement of the scapula during abduction?

Scapular Abduction – Also called scapular flexion or protraction. A movement where the scapula moves laterally away from the spinal column.

When does the scapula upwardly rotate?

The scapula upwardly rotates when you reach your arm up overhead. During this motion, the inferior angle of the scapula (see photo above) rotates up (superiorly) and to the side (laterally). At the top of your overhead motion, your scapula should be upwardly rotated about 55 degrees.

What is the shoulder rotation test?

The examiner must support the arm of the patient at the level of the elbow so that the upper extremity can be as much relaxed as possible. Then the examiner has to internally rotate the shoulder while at the same time perform a cross-body adduction of the arm. The test is positive if pain is elicited.

What happens to the scapula during shoulder flexion?

During shoulder flexion, the scapula should: upwardly rotate, posteriorly tilt, and externally rotate slightly at end range. Watch that these motions occur without too much adduction or abduction.

Why is scapular retraction important?

Why is it so important? It’s a movement that focuses on improving the integrity and strength of your shoulder blades. Apart from everything else, it helps improve your posture, making it a crucial movement for everyone to get right.

How does the scapula rotate?

The three observable rotary motions are: Upward/downward rotation around an axis perpendicular to the scapular body. Internal/external rotation around a vertical axis along the medial border. Anterior/posterior tilt around a horizontal axis along the scapular spine.

What is scapular internal rotation?

Definitions of Scapular Movements. ◆ Internal rotation: – rotation of the scapula (about a vertical. axis at the acromioclavicular joint) » lateral border of the scapula moves.

What are 3 tests used to measure flexibility?

In the United States, the shoulder stretch (sometimes called the zipper), trunk lift (assesses both flexibility and muscle fitness), and sit-and-reach (assesses low-back and hamstring flexibility) have been used, as have modifications of these tests.

What movements does the scapula do?

The scapula is an important bone in the function of the shoulder joint. It engages in 6 types of motion, which allow for full-functional upper extremity movement including protraction, retraction, elevation, depression, upward rotation, and downward rotation.