What resultant humeral injury is most likely also present?
Hill-Sachs lesion (a compression fracture of the humeral head as it comes forcibly in contact with the glenoid rim).
What directions can the shoulder dislocate in, and which is most common?
Anterior : > 95 %; Posterior : 2 - 4 %; Inferior (luxatio erecta) : < 1 %.
The humeral head is dislocated anteriorly and inferiorly with the anteroinferior margin of the glenoid, with some flattening of the corresponding part of the humerus.