Inclusion Criteria:  Males and females over the age of 18 Diagnosed with rotator cuff tendinosis, shoulder impingement syndrome, or degenerative or traumatic rotator cuff tear Planned conservative (non-operative) management Capacity to participate in home shoulder physiotherapy  Exclusion Criteria:  Upper extremity neurologic deficit Symptomatic contralateral shoulder with limited mobility requiring treatment Failed surgical management of rotator cuff pathology