What are the primary static stabilizers of the glenohumeral joint?
I am of the opinion that it would be faulty to assume that only muscles such as the rotator cuff muscles and the pectorals are responsible for stabilization of the glenohumeral joint. Ligaments are also involved.
As an example, if a person dislocated their shoulder, the coracohumeral, coracoacromial or the capsular ligaments might be compromised. If this happens glenohumeral joint stability is compromised.