Impact of Radiographic Imaging of the Shoulder Joint on Patient Management: An Advanced-Practice Physical Therapist's Approach

Abstract

Purpose: Recent care innovations using advanced-practice physical therapists (APPs) as alternative health care providers are promising. However, information related to the clinical decision making of APPs is limited with respect to ordering shoulder-imaging investigations and the impact of these investigations on patient management. The purpose of this study was twofold: (1) to explore the clinical decision making of the APP providing care in a shoulder clinic by examining the relationship between clinical examination findings and reasons for ordering imaging investigations and (2) to examine the impact on patient management of ordered investigations such as plain radiographs, ultrasound (US), magnetic resonance imaging (MRI), and magnetic resonance arthrogram (MRA). Method: This was a prospective study of consecutive patients with shoulder complaints. Results: A total of 300 patients were seen over a period of 12 months. Plain radiographs were ordered for 241 patients (80%); 39 (13%) received MRI, 27 (9%) US, and 7 (2%) MRA. There was a relationship between clinical examination findings and ordering plain radiographs and US (ps=0.047 to <0.0001). Plain radiographs ordered to examine the biomechanics of the glenohumeral joint affected management (χ21=8.66, p=0.003). Finding a new diagnosis was strongly correlated with change in management for all imaging investigations (ps=0.001 to <0.0001). Conclusion: Skilled, extended-role physical therapists rely on history and clinical examination without overusing costly imaging. The most important indicator of change in management was finding a new diagnosis, regardless of the type of investigation ordered.