What 6 motions occur at the scapulothoracic joint?
Instead, scapular motions on the thorax must occur in combinations, such as the simultaneous upward rotation, external rotation, and posterior tipping that occur when the arm is abducted….
- Elevation & Depression.
- Protraction & Retraction.
- Upward & Downward Rotation.
- Internal/External Rotation.
- Anterior/Posterior Tipping.
What are Scapulothoracic movements?
The scapulothoracic motion interface is the site of movement between the scapula (shoulder blade) and the thorax (chest wall). The scapula moves around the chest in many daily and athletic activities. This motion does not take place between layers of muscles which separate the scapula from the ribs.
What movements occur at the scapulothoracic joint?
The scapulothoracic joint allows for the complex scapular movements in relation to the thoracic cage: elevation and depression, protraction and retraction, and medial and lateral rotation.
What are the 4 main RoM’s that can occur at the scapular joint?
Elevation (range of motion 40°) – depression (RoM 10°) Protraction (20°) – retraction (15°) External rotation (60°) – Internal rotation (30°)
What plane of motion is scapulothoracic joint?
For motion in the sagittal plane at the glenohumeral joint, flexion couples with protraction and upward rotation of the scapula at the scapulothoracic joint while extension is accomplished by glenohumeral extension with retraction and downward rotation of the scapula at the scapulothoracic joint.
How many primary movements can the Scapulothoracic region perform?
It can move in three planes, around three different axes.
What are the two main functions of the Scapulothoracic articulation?
There are 17 muscles that attach to or originate on the scapula (see Table 1 below), and they perform two major roles: (1) to maintain a stable base of support for the humerus and (2) to allow for dynamic positioning of the glenoid fossa during glenohumeral elevation.
What is protraction of scapula?
During protraction, the scapulae move away from the spine as you round the upper back (thoracic spine). You protract by pushing your shoulders forward and spreading your scapulae across your back, trying to touch them in front of your chest. Retracting is done by squeezing the shoulder blades together.
What is the plane of the scapula?
The angle of the scapula in its resting position, normally 30° to 45° forward from the frontal plane toward the sagittal plane. Movement of the humerus in this plane is less restricted than in the frontal or sagittal planes because the capsule is not twisted.
What joint movement is upward rotation of the scapula?
Scapular lateral rotation
Scapular lateral rotation describes the rotation of the scapula (scapulothoracic joint) such that the glenoid fossa faces upwards – thus it may also be called upward rotation. This motion allows elevation of the humerus as seen in abduction of the arm. It is almost always associated with scapular protraction.
How many planes does the scapula move in?
The scapula has five degrees of freedom for movement on the thorax: It can move in two “straight-line” directions or “translations.” It can move in three planes, around three different axes.
What is the Scapulothoracic articulation?
The scapulothoracic joint is not a true synovial joint. Rather, the scapulothoracic articulation is formed by the convex surface of the posterior thoracic cage and the concave surface of the anterior scapula. It is attached to the axial skeleton through the acromioclavicular joint and the sternoclavicular joint.
What are the movements of the lower scapula?
Downward rotation: rotating the lower scapula towards the rib cage as in moving the arm behind the back. The glenohumeral joint/shoulder joint allows a wide range of movements including flexion, extension, abduction, adduction, rotation (medial and lateral rotation), and circumduction. 1.
Which is the first movement of the Scythian Suite?
The Bermuda Triangle (1978) is an electronic adaptation by Isao Tomita that includes the first movement ( The Adoration of Veles and Ala) of the Scythian Suite. The track “The Enemy God Dances with the Black Spirits” on Works Volume 1 by progressive rock group Emerson, Lake & Palmer is an arrangement of the second movement.
Why is the scapulothoracic joint so important to kinesiology?
Movements of scapulothoracic joint are a very important element of shoulder kinesiology. The wide range of motion available to the shoulder joint is due to the large movement available at ST joint. Observation and measurement of individual SC and AC joint motions are more difficult than observing or measuring motions of scapula on the thorax.
How is physical therapy used to treat scapular disorders?
Treatment for scapular disorders usually involves physical therapy designed to strengthen the muscles in the shoulder and restore the proper position and motion of the scapula. Your shoulder joint is a ball-and-socket joint.