SHOULDER BLADE Breakdown.
Ok so the title is misleading, the scapula doesn’t function as an ‘anchor’
. But its crucial to healthy glenohumeral joint motion, especially in throwing 
activities. It needs to have a balance of mobility and control due to its over SEVENTEEN muscle attachments..
It’s such an important hub for the upper-extremity, because imbalances
can affect joints farther away. For example imbalance of neck muscles attaching to the scapula can affect farther down to shoulder and elbow 
.
The main movements of the scapula are:
RetractionDepressionUpward Rotation
ProtractionElevationDownward Rotation.Because of sedentary lifestyle, the last 3 functions are usually in overdrive
. This has big consequences for the rotator cuff. In overhead motions the scapula should be able to upwardly rotate 
and clear space for the supraspinatus muscle. For a lot of people it doesn’t, hence commons activities can irritate the rotator cuff long term:
Overhead Bar PressThrowingSwimming.
