Tennis elbow / lateral epicondylitis
Red light therapy for tennis elbow
Evidence for low-level laser therapy in lateral elbow tendinopathy, including wavelength and targeting considerations.
The cited review identified 18 placebo-controlled RCTs; 13 trials with 730 patients entered meta-analysis.
moderate
partially-replicable
Bottom line
This is a relatively strong targeted-tendon category, but many panel wavelengths differ from the best-supported laser subgroups.
Consensus: LLLT can help lateral elbow tendinopathy when applied directly to tendon insertions with suitable wavelengths and doses.
What the studies found
- Direct tendon-insertion irradiation showed short-term pain and disability benefits.
- Acupuncture-point protocols and some wavelengths were negative.
- No serious side effects were reported in the review.
Dosage and timing
| Wavelengths | 632, 904 nm |
|---|---|
| Irradiance | Not settled |
| Fluence | Doses in the positive subgroup ranged from 0.5 to 7.2 J. |
| Session time | Varied across trials. |
| Frequency | Varied across trials. |
| Duration | Short-term follow-up commonly 3-8 weeks after treatment. |
| Timing | No time-of-day consensus. |
| Treatment area | Lateral elbow tendon insertions. |
| Device types | Clinical LLLT. |
| Notes | 904 nm and possibly 632 nm targeted tendon-insertion protocols drove positive findings. |
- Targeting appears essential.
- Most standard 660/850 nm panels do not reproduce 904 nm laser protocols.
- General elbow exposure should be described as extrapolation.
Caveats
- Tennis elbow diagnosis and tendon-load management matter.
- Wavelength-specific findings limit blanket panel claims.
Cited peer-reviewed sources
Bjordal JM, Lopes-Martins RA, Joensen J, et al. BMC Musculoskeletal Disorders. 2008.
A meta-analysis found short-term pain and disability benefits when LLLT directly irradiated lateral elbow tendon insertions at suitable wavelengths and doses.
Last reviewed: 2026-06-15