Helen, a question concerning your below quote-

“For example, I may think “this shoulder does not like compression” with the crank test or “this shoulder does not like internal rotation” with Hawkins Kennedy.”

Does the shoulder truly not like internal rotation? Or does it not like internal rotation when combined with horizontal adduction. If the latter, why? And is it important we differentiate this? The same logic applies to the crank test. During the test, do those specific ranges of motion that reproduce the patient’s symptoms matter?