CClinicalTrials.gg
CompletedNCT01882725Updated Jul 14, 2015Results posted

Study of Low Level Laser Light Therapy to Improve Blood Circulation in People With Chronic Heel Pain

An interventional study of Erchonia HP Scanner (HPS) in Defective; Circulation, sponsored by Erchonia Corporation. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2015-07-14.

Sponsored by Erchonia Corporation · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
14
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to determine whether low level laser light therapy is effective in increasing local blood circulation in people with chronic heel pain arising from plantar fasciitis.

Read the detailed description

Healthy blood circulation is important to overall health and well-being, as strong and steady local blood flow delivers fresh nutrients to the cells and prevents accumulation of waste materials within the cells necessary to maintain healthy cell function. Conversely, poor local blood circulation can cause numerous acute and chronic health problems, and can manifest itself in symptoms of pain, numbness, weakness and swelling, and can exacerbate these symptoms in co-existing acute and chronic conditions. Chronic conditions that may result from poor blood circulation that is untreated and persists over a long period of time include varicose veins, kidney damage, stroke and heart attack. Memory loss, frequent headaches, dizzy spells and slowed mental response can also result.

Therefore, improving local blood circulation has significant positive implications for both the overall health and well-being of an individual and for improving, relieving and preventing symptoms and long-term complications of poor blood circulation. Treatment to improve blood circulation include simple options such as changes in dietary and exercise habits, and alternative treatments such as acupuncture and herbal remedies. Medications may be prescribed to assist with contributory conditions such as high blood pressure or cholesterol. In more progressed cases, surgical options such as angioplasty or bypass may be performed to treat narrowed or blocked arteries.

However, less invasive options are usually minimally effective, medication has its own risks and side-effects and surgical procedures are invasive and carry significant procedural risks and potential complications. The purpose of this study is to evaluate the efficacy of low level laser therapy as a means of increasing local blood circulation as it is related to reducing chronic heel pain arising from plantar fasciitis that is simple, non-invasive and risk-free.

Low level laser therapy is believed to effect various physiological mechanisms of change that include improved blood flow and increased cell metabolism, advanced healing, anti-inflammatory actions and stimulation of the immune system. The laser directs light energy into the body's cells. The cells then convert this light energy into chemical energy to promote natural healing and pain relief. The laser also allows photons to enter the tissue and become absorbed in the cells mitochondria within which the photonic energy is converted to electromagnetic energy in the form of adenosine triphosphate (ATP). This additional ATP is energy the cell uses to trigger positive physiological responses from the body such as increased cell metabolism and development of muscle tissue and collagen, improvement of blood circulation, stimulation of tissue repair, wound healing and stimulation of the nervous and immune systems.

02

Conditions studied

  • Defective; Circulation
03

In context

Lead sponsor

Erchonia Corporation is the lead sponsor of 48 studies on the registry; 2 are open to participants now.

Of its 14 completed or terminated interventional studies of FDA-regulated products, 14 (100%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Unilateral Mechanical Plantar Heel Pain: insertional heel pain of the plantar fascia - plantar fasciitis - in one heel
  • Chronic heel pain defined as at least 3 months of ongoing heel pain with no evidence of acute trauma to the heel
  • A self-rating on the 0-100 Visual Analog Scale of at least 50 for heel pain experienced upon taking the first few steps of the study qualification evaluation day (recorded retrospectively), to be confirmed by the two-day average VAS attained during the Baseline Washout phase.
  • Heel pain has been previously unresponsive to prescription non-steroidal anti-inflammatory drugs (NSAIDs) taken over a minimum period of 2 weeks; and any two or more of the following conservative treatments: rest, taping, stretching, orthotics, shoe modifications, night splinting, casting, physical therapy, or local corticosteroid injections.
  • Subject is willing and able to refrain from consuming over-the-counter and/or prescription medications for the indication of the relief of pain throughout the study.
  • Subject is willing and able to refrain from partaking in other non-study treatments or therapies for the relief of heel pain throughout the study.

Exclusion criteria

Exclusion Criteria:

  • Subject does not have any one or more of the following etiologies of chronic heel pain: Mechanical Posterior Heel Pain; Neurologic Heel Pain; Arthritic Heel Pain; and Traumatic Heel Pain
  • Evidence of acute trauma to the heel
  • Loss of plantar foot sensation
  • Foot deformity
  • Previous surgery to the heel
  • Foot trauma within the previous three months
  • Skin ulceration - infection or wound - on the heel and surrounding treatment area
  • Sciatica
  • Benign and malignant tumors
  • Acute infection of soft tissue/bone, e.g. osteomyelitis
  • Presence of diabetic neuropathic pain
  • Diabetes Type I
  • Presence of sensory neuropathy
  • Previous diagnosis of neuropathy affecting lower extremities
  • Peripheral vascular disease or autoimmune disease
  • Fibromyalgia
  • Chronic fatigue syndrome
  • Chronic pain disorders
  • Metabolic disorders: Osteomalacia, Paget's disease, Sickle cell disease
  • Blood coagulation disorders
  • Significant heart conditions including Congestive Heart Failure (CHF) and implantable heart devices
  • Non-ambulatory status
  • Unable or unwilling to consume the study rescue medication of Tylenol
  • Photosensitivity disorder
  • Pregnant or lactating
  • Serious mental health illness such as dementia or schizophrenia; psychiatric hospitalization in past two years
  • Developmental disability or cognitive impairment that would preclude adequate comprehension of the consent form and ability to record the necessary measurements.
  • History of drug or alcohol abuse
  • Involvement in litigation and/or a worker's compensation claim and/or receiving disability benefits related to the study condition
  • Participation in any type of research in the past 30 days
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
14 participants (actual)

Study arms

  • Experimental
    Erchonia HP Scanner (HPS)

    The Erchonia HP Scanner (HPS) Laser contains 3 independent diodes mounted in scanner devices and positioned equidistant from each other and titled at a 30 degree angle. Each scanner emits 17 milliwatts (mW), 635 nm of red laser light.

    Device: Erchonia HP Scanner (HPS)

Interventions

  • DeviceErchonia HP Scanner (HPS)

    The Erchonia HP Scanner (HPS) Laser is administered to the subject's heel 6 times across 3 consecutive weeks, 2 times each week, for 10 minutes of treatment time per administration.

06

What researchers measure

Primary outcomes

  1. Change in Skin Perfusion Pressure (SPP)

    Skin Perfusion Pressure (SPP) measured peripheral microcirculation or skin perfusion using a laser Doppler sensor and a pressure cuff to evaluate reactive hyperemia, the transient increase in blood flow that occurs following a brief period of ischemia. The SPP value was measured in mmHg. The per cent (%) change in mean Skin Perfusion Pressure (SPP) in mmHg was calculated as the % change in measurements from before the first procedure administration with the Erchonia® HPS Laser to after the sixth and final procedure administration. It was pre-determined that a minimum mean change in % SPP of +10% or greater across the evaluation period would be considered clinically meaningful. A positive (+) change indicates that SPP increased across the procedure administration phase and is positive for study efficacy. A negative (-) change indicates that SPP decreased across the procedure administration phase and is negative for study efficacy.

    Time frame: baseline and 3 weeks

Secondary outcomes

  1. Change in Skin Surface Temperature on the Hind Foot

    Skin surface temperature on the hind foot was recorded in degrees using an infrared thermometer. Change in skin surface temperature in degrees was calculated as the change in measurements before the first procedure administration (baseline) to after the sixth and final procedure administration. It was pre-determined that a minimum mean increase in skin surface temperature of +2.5 degrees across the procedure administration phase would be considered clinically meaningful. A positive (+) change indicates that the skin surface temperature increased across the procedure administration phase and is positive for study efficacy. A negative (-) change indicates that the skin surface temperature decreased across the procedure administration phase and is negative for study efficacy.

    Time frame: baseline and 3 weeks

07

Results

Posted Jul 14, 2015

Participant flow

Participant flow — Overall Study
MilestoneErchonia HP Scanner (HPS)
Started14
Completed14
Not completed0

Outcome measures

PrimaryChange in Skin Perfusion Pressure (SPP)

Skin Perfusion Pressure (SPP) measured peripheral microcirculation or skin perfusion using a laser Doppler sensor and a pressure cuff to evaluate reactive hyperemia, the transient increase in blood flow that occurs following a brief period of ischemia. The SPP value was measured in mmHg. The per cent (%) change in mean Skin Perfusion Pressure (SPP) in mmHg was calculated as the % change in measurements from before the first procedure administration with the Erchonia® HPS Laser to after the sixth and final procedure administration. It was pre-determined that a minimum mean change in % SPP of +10% or greater across the evaluation period would be considered clinically meaningful. A positive (+) change indicates that SPP increased across the procedure administration phase and is positive for study efficacy. A negative (-) change indicates that SPP decreased across the procedure administration phase and is negative for study efficacy.

Time frame:
baseline and 3 weeks
Reported as:
Mean · percentage of change
Change in Skin Perfusion Pressure (SPP)
percentage of changeErchonia HP Scanner (HPS)
Change in Skin Perfusion Pressure (SPP)17.68 ± 30.37
Statistical analysis
  • Erchonia HP Scanner (HPS) · t-test, 1 sided · p = <0.05
SecondaryChange in Skin Surface Temperature on the Hind Foot

Skin surface temperature on the hind foot was recorded in degrees using an infrared thermometer. Change in skin surface temperature in degrees was calculated as the change in measurements before the first procedure administration (baseline) to after the sixth and final procedure administration. It was pre-determined that a minimum mean increase in skin surface temperature of +2.5 degrees across the procedure administration phase would be considered clinically meaningful. A positive (+) change indicates that the skin surface temperature increased across the procedure administration phase and is positive for study efficacy. A negative (-) change indicates that the skin surface temperature decreased across the procedure administration phase and is negative for study efficacy.

Time frame:
baseline and 3 weeks
Reported as:
Mean · Degrees Farenheit
Change in Skin Surface Temperature on the Hind Foot
Degrees FarenheitErchonia HP Scanner (HPS)
Change in Skin Surface Temperature on the Hind Foot2.93 ± 3.55
Statistical analysis
  • Erchonia HP Scanner (HPS) · t-test, 2 sided · p = <0.01

Adverse events

Collected over 3 weeks. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Erchonia HP Scanner (HPS)—0/14 (0%)0/14 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Erchonia HP Scanner (HPS)
Mean51.79 ± 11.31
Sex: Female, Male
Sex: Female, Male(Participants)Erchonia HP Scanner (HPS)
Female12
Male2
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Erchonia HP Scanner (HPS)
Hispanic or Latino1
Not Hispanic or Latino13
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Erchonia HP Scanner (HPS)
United States14
Duration of Heel Pain
Duration of Heel Pain(months)Erchonia HP Scanner (HPS)
Mean15.93 ± 15.52
Degree of Heel Pain on the Visual Analog Scale (VAS)
Degree of Heel Pain on the Visual Analog Scale (VAS)(units on a scale)Erchonia HP Scanner (HPS)
Mean69.29 ± 10.67
08

Study locations

1 site
  • Arizona Institute of Footcare Physicians
    Mesa, Arizona 85204, United States
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 14, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01882725
Lead sponsor
Erchonia Corporation
Responsible party
Sponsor
First posted
Jun 20, 2013
Start date
Jun 2013
Primary completion
Sep 2013
Completion
Sep 2013
Results posted
Jul 14, 2015
Last update
Jul 14, 2015

Study contacts

Kerry Zang, DPM
principal investigator

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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