Redlight Guide

Plantar fasciitis / heel pain

Red light therapy for plantar fasciitis and heel pain

Meta-analysis evidence for low-level laser therapy in plantar fasciitis and lower extremity tendinopathy.

Study count

Cited reviews include a lower-extremity tendinopathy/plantar fasciitis meta-analysis and a 19-trial network meta-analysis with 1,676 plantar fasciitis patients.

Evidence grade

moderate

Panel relevance

partially-replicable

Bottom line

This is a promising targeted-pain category, but consumer panel translation depends on heel distance, irradiance, and treatment-area assumptions.

Consensus: LLLT appears to reduce short- and medium-term pain in plantar fasciitis/lower-extremity tendinopathy, especially when recommended doses are used.

What the studies found

  • The 2022 BMJ Open review found reduced pain and disability at completed therapy and weeks later.
  • The 2018 network meta-analysis found LLLT reduced short-term pain versus placebo among several physical modalities.
  • Long-term durability remains less clear.

Dosage and timing

WavelengthsNot settled nm
IrradianceNot settled
FluenceNot settled
Session timeVaried across trials.
FrequencyVaried across trials.
DurationShort- and medium-term benefits; long-term data limited.
TimingNo time-of-day consensus.
Treatment areaPlantar fascia, heel, or lower-extremity tendon targets.
Device typesClinical low-level laser therapy.
NotesRecommended-dose subgroups performed better in the BMJ Open review.
  • Dose quality matters.
  • Targeted heel/plantar fascia application is the evidence-relevant setup.
  • Long-term maintenance protocols are not settled.

Caveats

  • Heel pain can have multiple causes.
  • Panel exposure may not reproduce clinical laser spot dosing.

Cited peer-reviewed sources

meta-analysis Study count not extracted Evidence: moderate; direction: positive Panel relevance: partially-replicable Wavelengths: Not reported Dose/timing: Varied by trial / Short- and medium-term follow-up; no long-term data Area: Lower extremity tendon or plantar fascia region Device: Low-level laser therapy Source

Naterstad IF, Joensen J, Bjordal JM, et al. BMJ Open. 2022.

A BMJ Open meta-analysis found short- and medium-term pain and disability reductions in lower extremity tendinopathy and plantar fasciitis.

Source

meta-analysis 19 included studies Evidence: low; direction: positive Panel relevance: partially-replicable Wavelengths: Not reported Dose/timing: Varied by trial / Short-term and medium-term comparisons Area: Plantar fascia / heel Device: Low-level laser therapy among other physical modalities Source

Li X, Zhang L, Gu S, et al. Medicine. 2018.

A network meta-analysis of plantar fasciitis interventions found LLLT reduced short-term pain versus placebo among several physical modalities.

Source

Last reviewed: 2026-06-15