Pt.Notes

During the shoulder abduction, the clavicle retract a greater distance in scapular plane than in frontal plane

Compined scapulohumeral moition

All the following are dynamic stabilization to GH except

Loss of the intraarticular pressure produced by venting the capsule, result in large translation of the humerus inferior

Long head of biceps brachii enter GH joint capsule through the opening between supraspinatus and subscapularies and penterate the synovium

Supraspinatus is able to offset the upword action of the deltoid

Teres minor and infraspintus only has a stabilization Role

The inferior translation of infraspintus, tears minor, subscapularies offset the superior translation of the deltoid

Fy is

Scapulothoracic protraction can be offseted by AC internal rotation

Elevation of scapula

Upword rotation and downword rotation is easily to observe so called the Primary moition of scapula

In resting position of scapula

We can observe the AC and SC moition easly but the scapulothoracic moition is more difficult to opserve

Conoid part located Medial and slightly anterior to Trapezoid

The disc of the AC joint degenerate at the old age

All functional moition at GH joint involve some movement of clavicle around SC joint

The only structure that attached the shoulder complex to axial skeleton

Moition of the shoulder affect the trunk moition

Given its moition from movement of the head of humerus below the coracoacromial arch