Patients with shoulder impingement (subacromial pain syndrome) will be randomized to receive 2 treatment sessions per week for up to 6 weeks (up to 12 sessions total) of either: (1) electric dry needling and spinal manipulation or (2) impairment-based mobilization, exercise and interferential electrotherapy.
The purpose of this research is to compare two different approaches for treating patients with shoulder impingement (subacromial pain syndrome): electric dry needling and spinal manipulation versus impairment-based mobilization, exercise, and interferential electrotherapy. Physical therapists commonly use all of these techniques to treat shoulder impingement (subacromial pain syndrome). This study is attempting to find out if one treatment strategy is more effective than the other.