COMMON DEVIATIONS There are four main deviations that can cause pain, injury, and movement dysfunction in the thoracic spine and shoulder girdle. Excessive Thoracic Kyphosis Protracted Shoulder Girdle Internally Rotated Arms Elevate Scapula Our thoracic spine naturally has a mild forward-shaped curve called a kyphotic curve. A greater than normal curvature of the thoracic spine is known to as excessive Thoracic kyphosis . Excessive thoracic kyphosis disturb the function of the entire shoulder girdle. A protracted shoulder girdle occurs when the scapula (shoulder blades) move forward on the rib cage, causing their vertebral borders (the edges closest to the spine) to move away from the spine. Protraction of the shoulder blades also protracts the entire shoulder girdle, moving the acromion's and collarbones forward and out of alignment. When the shoulder girdle protracts, it affects the position of the glenohumeral joint, causing the upper arm to rotate inward tow...
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