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Healthcare Use Patterns for High Volume Musculoskeletal Shoulder Disorders: A Longitudinal Cohort from the US
Steven Z George1, Sarah Morton-Oswald2, Hui-Jie Lee2
1Departments of Orthopaedic Surgery and Population Health Sciences, Duke Clinical Research Institute, Duke University, Durham, NC, USA.
Clinical Epidemiology
|December 16, 2025
Summary
Shoulder pain care utilization varied between military and civilian clinics, with differences in imaging, steroid injections, and physical therapy use for specific diagnoses. Most patients did not receive diagnostic imaging.
Area of Science:
- Orthopedics
- Musculoskeletal Disorders
- Healthcare Utilization
Background:
- Shoulder injuries are common musculoskeletal disorders requiring healthcare.
- Understanding healthcare system utilization for shoulder disorders is crucial.
- Patterns of diagnostic imaging and treatment for shoulder pain are not well-defined.
Purpose of the Study:
- To describe the frequency and timing of diagnostic imaging and treatment for new shoulder pain episodes.
- To determine variations in healthcare utilization across diagnostic subgroups and care settings (military vs. civilian).
Main Methods:
- Retrospective cohort study of 456,241 US Military Health System beneficiaries.
- Patients classified into 7 diagnostic subgroups (e.g., rotator cuff, instability, osteoarthritis).
- Healthcare encounters within 3 months analyzed for diagnostic imaging, pharmacological, and non-pharmacological treatments.
Main Results:
- 76.7% of patients did not receive diagnostic imaging; advanced imaging was more common in the multiple diagnoses group.
- Non-steroidal anti-inflammatory drugs (NSAIDs) and physical therapy were the most common treatments.
- Civilian clinics showed lower physical therapy use and higher imaging use (MRI/X-ray) compared to military clinics for similar diagnoses.
- Steroid joint injections were more frequent in civilian clinics for rotator cuff, multiple diagnoses, and hypomobility disorders.
Conclusions:
- Shoulder injury care patterns are largely similar between military and civilian clinics.
- Significant variations exist in imaging, steroid injections, and physical therapy use for specific shoulder diagnoses based on care setting.

