Recurrent dislocation is most common in the shoulder joint. Which one of the following is not an impoant cause for the same?

B i.e Associated with fracture neck of the humerus * Fracture neck of humerus is not the cause of shoulder dislocation but it is an associated feature. And it is mostly associated with acute traumatic dislocation (not with recurrent dislocation).* Freedom of mobility especially abduction & external rotationQ movement cause recurrent shoulder dislocation in predisposed individuals.