ROTATOR CUFF INJURIES/IMPINGEMENT SYNDROME
The shoulder is the most highly mobile and flexible major joint in the body. Due to its enhanced flexibility and wide ranges of motion, it is more susceptible to injury. Its primary source of joint stability must be balanced muscle control. This control is dependent upon many muscles firing in a proper sequential fashion to assure its maximum function. Any dysfunction with this joint can be attributed to numerous muscular imbalances within the joint itself and its associated structures i.e. poor alignment of the shoulder blade (scapula) or collarbone (clavicle) can create a torque throughout any range of motion and create irritation or inflammation in the related muscles. This in turn can affect the firing sequence. In response, certain muscles will not carry their load effectively and force other muscles to overwork. This pre-disposes the joint to overuse injuries.
supraspinatus, infraspinatus, teres minor and subscapularus
For those involved with regular exercise and training
shoulder, neck and arm muscles possibly involved. This helps determine muscle
weaknesses, which muscles are forced to compensate and other contributing
factors stemming from the neck, wrist and elbow.