How should the scapula move?
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 is scapular humeral 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 muscle moves the scapula?
serratus anterior muscle
When the whole serratus anterior muscle contracts, it pulls the scapula forward around the rib cage: that’s protrusion. When its upper, or lower fibers contract separately, they help to produce downward or upward rotation of the scapula.
How do I know if I have scapular winging?
Scapular winging often affects your ability to raise your arm above your shoulder. It may also be associated with other symptoms, including: pain or discomfort in your neck, shoulders, and back. fatigue.
When should you retract your scapula?
“As the arms pull the weight back in line with the shoulders [i.e., the weight is lifted], the scapulae should retract.” Price notes that scapular movement will change slightly if the position of the arm or grip position is altered.
What are the 4 shoulder joints?
Four joints are present in the shoulder: the sternoclavicular (SC), acromioclavicular (AC), and scapulothoracic joints, and glenohumeral joint.
Which muscle is deep to the scapula?
The pectoralis minor muscle is a small triangular shaped muscle that lies deep to pectoralis major muscle and passes as three muscular slips from the thoracic wall (ribs III to V) to the coracoid process of the scapula.
Is a winged scapula serious?
Scapular winging is a rare, but potentially debilitating condition that can affect the ability to lift, pull, and push heavy objects, as well as to perform daily activities of living, such as brushing one’s hair and teeth and carrying grocery bags [1].
Is winged scapula fixable?
You just need to retrain a position regularly and that is not hard to do at all. I’ve done it for my own winged scapula and helped many others to do the same.
Can a uncoordinated movement cause an injury to the scapula?
With uncoordinated movements at the scapula level, you can end up injuring your elbow, wrist or hand. Your shoulder requires both mobility and stability to support and stabilize your upper extremities. Your shoulder joint and scapula joint are the foundation of this all.
How is the scapulohumeral rhythm of arm elevation calculated?
The scapulohumeral rhythm is therefore defined as the ratio of the glenohumeral movement to the scapulothoracic movement during arm elevation. This is most often calculated by dividing the total amount of shoulder elevation (humerothoracic) by the scapular upward rotation (scapulothoracic).
How does scapular instability affect your muscle strength?
The scapular is the first link in the kinetic chain of movements involving your upper extremities. Scapular instability can lead to poor movement patterns or deficits in muscle strength. With uncoordinated movements at the scapula level, you can end up injuring your elbow, wrist or hand.
How to stabilize the scapular area of the body?
1 Hold the mace offset with the hand towards the end of the hand in an overhand grip and the other hand with an underhand grip. 2 Pull the mace in about a couple inches away from your navel (belly button). 3 Keep your shoulder blades retracted and your core tight. Really feel and activate those muscles. 4 Hold for allotted time and release.