What are the movements of scapula?
What are the movements of scapula?
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.
Which muscle moves the scapula forward and downward?
Pectoralis minor
Pectoralis minor draws the scapula forward and downward, and raises the ribs in forced inspiration. The subclavius muscle is a small muscle that lies deep to pectoralis major muscle.
Which muscle is in the scapular region?
The deep ‘intrinsic’ or true scapular muscles are the deltoid, supraspinatus, infraspinatus, teres minor, teres major, and subscapularis muscle. The deltoid muscle, which has three parts (clavicular, acromial, and spinal), is superior and forms the roundness of the shoulder over the glenohumeral joint.
Where is the scapula muscle?
The scapula, or shoulder blade, is a large triangular-shaped bone that lies in the upper back. The bone is surrounded and supported by a complex system of muscles that work together to help you move your arm.
What is scapular rhythm?
Terminology. Scapulohumeral rhythm: the coordinated motion of the scapula and humerus experienced during shoulder movement and motion that has been traditionally viewed as occurring at a ratio of 2:1 (2 degrees of humeral flexion/abduction to 1 degree of scapular upward rotation).
What is winging of scapula?
Scapular winging, sometimes called a winged scapula, is a condition that affects the shoulder blades. Scapula is the anatomical term for the shoulder blade. The shoulder blades usually rest flat against the back of the chest wall. Scapular winging occurs when a shoulder blade sticks out.
What muscles abduct the scapula?
The trapezius and serratus anterior muscles work in tandem to coordinate rotation and movement of the scapula to accommodate the full range of motion of the arm. Specifically, they facilitate abduction of the arm from 90 degrees and further upwards.
How many muscles are in the scapula?
It connects with the humerus at the glenohumeral joint as well as the clavicle at the acromioclavicular joint to form the shoulder joint. In total, 17 different muscles attach to the scapula, which makes it difficult to fracture.
What holds scapula in place?
The scapula is only attached to the thorax by ligamentous attachments at the acromioclavicular joint and through a suction mechanism provided by the muscular attachments of the serratus anterior and subscapualaris.
Is scapula axial or appendicular?
The appendicular skeleton is everything else. It’s everything that attaches on to the axial skeleton. Think “appendages”. The pelvis, femur, fibula, tibia and all of the foot bones as well as the scapula, clavicle, humerus, radius, ulna and all of the hand bones are classified as appendicular.
What are the two processes of the scapula?
The scapula bears two marked processes: the acromion and, rather less obvious, the coracoid. The acromion springs like the head of a golf club from the spine of the scapula, extends anterior to the glenoid fossa and carries a small subsidiary process, the metacromion.
What are the best exercises for the scapula?
One of the best exercises for the shoulders to improve upward rotation is the scapular plank pushup. This exercise trains the serratus anterior to stabilize the scapula on the ribcage during arm movement.
What are the movements of the scapula?
The movements of the scapula are protraction, retraction, depression, elevation, upward rotation, and downward rotation.
What muscle rotates scapula?
The serratus anterior muscle abducts and upwardly (laterally) rotates the scapula and holds the scapula flat against the rib cage. The upward rotation is produced by the force couple action of the serratus anterior muscle and the trapezius muscle.
What drives upward rotation of the scapula?
Forces drive all movements. In this case, muscles that rotate the scapula upward include the serratus anterior (SA) and parts of the trapezius . During the early phase of upward rotation, the scapula and the clavicle move together around an axis through the sternoclavicular (SC) joint, the only joint where the scapula and shoulder girdle attach to the axial skeleton.
