Impingement Syndrome Is a Common Overuse Injury of the Shoulder

Impingement syndrome is a common overuse injury of the shoulder. There are several mechanisms that may lead to this condition including:

A) Too much swimming.
B) Reduction in the amount of scapular retraction and downward rotation of the glenoid cavity during movements of the arm into elevation.
C) Weakness and poor coordinated scapular stabilizers: subscapularis, supraspinatus Teres major and Pectoralis minor
D) Weakness and poor coordinated scapular stabilizers: Serratus anterior, Rhomboids (major/minor) and Pectoralis minor