How does the scapula rotate?
The movement of the scapula can be described by rotations in relation to the thorax. The scapula moves around a dorso-ventral axis, resulting in a rotation in the frontal plane. In this movement the glenoid cavity is turned cranially (upward rotation) or caudally (downward rotation).
What muscle raises and rotates scapula?
The levator scapulae functions to elevate the scapula and tilt the glenoid cavity inferiorly by rotating the scapula downward.
What is the anatomical position of the scapula?
The scapula is a flat, triangular-shaped bone (colloquially as the “shoulder blade”). It is located in the upper thoracic region on the dorsal surface of the rib cage. It connects with the humerus at the glenohumeral joint as well as the clavicle at the acromioclavicular joint to form the shoulder joint.
What causes upward rotation of the scapula?
Upward rotation is accomplished by the trapezius and serratus anterior muscles. Downward rotation is accomplished by the force of gravity as well as the latissimus dorsi, levator scapulae, rhomboids, and the pectoralis major and minor muscles.
What is upward rotation of shoulder?
Scapular upward rotation results from a sequence of shoulder girdle movements: SCAPULA ROTATES UPWARDLY AS CLAVICLE ELEVATES, around an AXIS OF MOTION that passes through the SC joint and base of scapular spine. Clavicular elevation continues UNTIL COSTOCLAVICULAR LIGAMENT BECOMES TIGHT.
How do you increase scapular upward rotation?
Exercises that have been shown to increase the activation of the Upper Trapezius and effectively help us fix our upward scapular rotation are the following:
- Overhead shrugs.
- Monkey Shrugs.
What is upward and downward rotation of scapula?
Downward rotation of the scapula occurs as the arm is returned to the side from a raised position. The motion is described similar to upward rotation, except that the clavicle depresses at the SC joint and the scapula downwardly rotates at the AC joint.
Which terms correctly describe the scapula?
Cards
| Term What terms correctly describe the shoulder joint? | Definition Scapulohumeral & glenohumeral |
|---|---|
| Term The three angles of the scapula include- | Definition Lateral, superior,& inferior |
| Term He anterior surface of the scapula is referred to as – | Definition The costal surface |
What limits scapular upward rotation?
Finally, tightness of the downward rotators of the scapula, namely the rhomboids, levator scapula and pectoralis minor muscles, may limit the amount of upward rotation available.
What is upward shoulder rotation?
Upward rotation is the rotatory movement of the scapula where you are moving the scapula laterally and upward. The motion feels like you are moving your shoulders up and forward at the same time.
What is upward rotation of the shoulder?
Which is the most important muscle to produce upward rotation of scapula?
The middle and lower serratus anterior muscles produce scapular upward rotation, posterior tilting, and external rotation. Upper trapezius produces clavicular elevation and retraction. The middle trapezius is primarily a medial stabilizer of the scapula.
What is the force couple for scapular upward rotation?
A scapular force couple is produced by the trapezius and serratus anterior during upward rotation of the scapula with arm elevation. Though the trapezius and serratus anterior are producing linear opposing forces, there is no linear translation of the scapula.