If the patient presents with scapular downward rotation or depression during shoulder elevation, it is likely that the serratus anterior and/or lower trapezius are not activating properly. Wall slides are an excellent exercise to reinforce activation of these muscles and improve potential movement faults! (Click image to watch 1-2 minute video)
*Clinical Side Note: As always, assess the patient as a whole. It is highly likely that other contributing factors are present! Tackle the impairment that is contributing the most and address the others as treatment progresses.