Frozen Shoulder and Pain Management
Frozen shoulder, also known as adhesive capsulitis, is a common condition characterized by restricted shoulder movement and chronic pain. It affects approximately 2–5% of the general population and can significantly impair daily activities. Recovery often takes several months, prompting increased interest in non-invasive, energy-based therapies as alternatives to conventional medication and physical therapy.
One such approach is High-Intensity Laser Therapy (HILT). This article summarizes the clinical findings of a randomized controlled trial (RCT) conducted by the Department of Orthopedic Surgery at Seoul National University Hospital, evaluating the effectiveness of HILT in managing frozen shoulder pain.
Study Objective and Design
The primary goal of the study was to assess the impact of HILT on pain relief, patient satisfaction, and range of motion (ROM) in patients with frozen shoulder. A total of 66 participants were randomly assigned to either the HILT group or the placebo group, receiving a total of 9 treatment sessions over 3 weeks.
Key evaluation metrics included:
Visual Analog Scale (VAS) for pain
Patient satisfaction
Passive ROM (Forward Flexion [FF], External Rotation [ER], Internal Rotation [IR])
Evaluation time points: Baseline, 3 weeks, 8 weeks, 12 weeks
Summary of Results
Metric
| HILT Group
| Placebo Group
| p-value |
Pain VAS (3 weeks)
| 3.2 ± 1.7 | 4.3 ± 2.2 | 0.033 |
Pain VAS (8 weeks)
| 2.2 ± 2.0 | 3.4 ± 2.7 |
|
Pain VAS (12 weeks)
| 2.0 ± 2.2 | 2.2 ± 2.2 |
|
ROM improvement
| Improved in both groups, no significant difference |
Patient satisfaction
| No significant difference |
Pain levels were significantly reduced in the HILT group at 3 and 8 weeks.
No statistically significant differences were observed in ROM or satisfaction between the groups.
By 12 weeks, both groups showed reduced pain, and the final difference was negligible.
These findings suggest that HILT may be effective for early-stage pain relief in patients with frozen shoulder. It holds potential as an adjuvant therapy before starting physical rehabilitation or exercise-based treatment.
Although its long-term effects on ROM and sustained improvement require further study, HILT’s non-invasive nature and short treatment duration make it a practical option when combined with self-directed rehabilitation exercises.
Conclusion
This study presents clinically meaningful evidence that High-Intensity Laser Therapy can offer early pain relief for patients with frozen shoulder. Its low procedural burden and high safety profile make it a viable treatment option alongside conventional therapies such as medication or exercise. Future studies are needed to optimize dosage, treatment duration, and combination strategies for enhanced therapeutic outcomes.
Frozen Shoulder and Pain Management
Frozen shoulder, also known as adhesive capsulitis, is a common condition characterized by restricted shoulder movement and chronic pain. It affects approximately 2–5% of the general population and can significantly impair daily activities. Recovery often takes several months, prompting increased interest in non-invasive, energy-based therapies as alternatives to conventional medication and physical therapy.
One such approach is High-Intensity Laser Therapy (HILT). This article summarizes the clinical findings of a randomized controlled trial (RCT) conducted by the Department of Orthopedic Surgery at Seoul National University Hospital, evaluating the effectiveness of HILT in managing frozen shoulder pain.
Study Objective and Design
The primary goal of the study was to assess the impact of HILT on pain relief, patient satisfaction, and range of motion (ROM) in patients with frozen shoulder. A total of 66 participants were randomly assigned to either the HILT group or the placebo group, receiving a total of 9 treatment sessions over 3 weeks.
Key evaluation metrics included:
Visual Analog Scale (VAS) for pain
Patient satisfaction
Passive ROM (Forward Flexion [FF], External Rotation [ER], Internal Rotation [IR])
Evaluation time points: Baseline, 3 weeks, 8 weeks, 12 weeks
Summary of Results
Improved in both groups, no significant difference
No significant difference
Pain levels were significantly reduced in the HILT group at 3 and 8 weeks.
No statistically significant differences were observed in ROM or satisfaction between the groups.
By 12 weeks, both groups showed reduced pain, and the final difference was negligible.
These findings suggest that HILT may be effective for early-stage pain relief in patients with frozen shoulder. It holds potential as an adjuvant therapy before starting physical rehabilitation or exercise-based treatment.
Although its long-term effects on ROM and sustained improvement require further study, HILT’s non-invasive nature and short treatment duration make it a practical option when combined with self-directed rehabilitation exercises.
Conclusion
This study presents clinically meaningful evidence that High-Intensity Laser Therapy can offer early pain relief for patients with frozen shoulder. Its low procedural burden and high safety profile make it a viable treatment option alongside conventional therapies such as medication or exercise. Future studies are needed to optimize dosage, treatment duration, and combination strategies for enhanced therapeutic outcomes.