Laser therapy in treatment of Trigger Finger and De Quervains

ISRCTN ISRCTN85358156
DOI https://doi.org/10.1186/ISRCTN85358156
Secondary identifying numbers N/A
Submission date
01/04/2013
Registration date
12/04/2013
Last edited
06/01/2017
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Musculoskeletal Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English Summary

Background and study aims
This study aims to establish an alternative treatment for patients with two particular forms of Tenosynovitis; Trigger Finger disease or De Quervains. These separate pathologies constitute the majority of referrals from our local GP practices to our Musculoskeletal Clinical Assessment, Triage and Therapy Service (MCATTS) at Guy's & St Thomas’ Hospitals.
A tendon is a strong tissue that attaches a muscle to a bone. In these cases the tendons come from muscles in the forearm and attach to the bones of the thumb or fingers, by passing through the palm. The muscle pulling on these tendons bend the fingers towards the palm, or straighten the thumbs. Tendons are encased within a tunnel of tissue called a tendon sheath that covers and protects the tendons, whilst allowing them to slide in and out without any friction. When the sheath becomes inflamed this is termed tenosynovitis.
In trigger finger disease the tendon cannot easily slide back in due to the swelling of the tendon or the sheath. The finger can become locked unless you straightened forcefully. In De Quevains disease, the tendons that straighten the thumb are involved due to a tenosynovitis. The typical symptom is pain over your wrist at the base of your thumb that is made worse by activity and eased by rest.
Laser therapy has shown clinical success in a wide variety of musculoskeletal and wound healing scenarios. This study aims to quantify the effect of laser therapy on the treatment of trigger finger disease in diabetic and non-diabetic groups and De Quervains Tenosynovitis.
The study shall quantify both the effectiveness of laser by reducing symptoms, finger-locking, and improving function. We also aim to establish the duration of treatment required for both in terms of hospital visits, and days from the initial consultation.

Who can participate?
Any patient 18 years of age or older with full mental capacity and no active cancer

What does the study involve?
There are 3 groups in this study:
1. Trigger finger in non-diabetics
2. Trigger finger in diabetics
3. Patients with De Quervains
We will expect to recruit about 30 patients in each group and randomly assign half into receiving laser therapy (receiving 2 sessions a week for 6 weeks), and half to splinting (for 6 weeks).
If patients have not improved in either group we will then proceed to our standard level of care.

What are the possible benefits and risks of participating?
Currently each trigger finger disease and De Quervains are managed by splinting, proceeding to steroid injections and then ultimately surgery. Steroid injections can be very painful, and can increase the risk of infection and tendon rupture. In diabetics it has also been shown to affect blood sugar levels for more than 5 days, which can be problematic in insulin controlled diabetics. Surgery carries further risks of pain, infection, bleeding and scarring.
K-laser is a non-invasive alternative that avoids all of these potential risks. There has not been a single reported case of any form of complication associated with high intensity laser therapy. There are however many examples of where this novel treatment modality can enhance recovery of different forms of tendonitis and chronic inflammatory changes. The risk profile associated with this study is therefore negligible based on published evidence.

Where is the study run from?
The Hand therapy department, Third Floor, Lambeth Wing, St Thomas’ Hospital

When is the study starting and how long is it expected to run for?
The study is expected to run from June 2013-June 2014

Who is funding the study?
Guy’s & St Thomas’ NHS Trust

Who is the main contact?
Mr Mohammed Tahir
Dr.tahir@doctors.net.uk

Contact information

Mr Mohammed Tahir
Scientific

Guy's & St Thomas' NHS Foundation Trust
Department of Plastic Surgery
Westminster Bridge Road
London
SE1 7EH
United Kingdom

Study information

Study designRandomised control trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific titleLaser therapy in treatment of Trigger Finger and De Quervains: a randomised control trial
Study hypothesisHigh intensity laser therapy is effective in treating inflammatory hand conditions including trigger finger and de quervains tenosynovitis.
Ethics approval(s)Not provided at time of registration
ConditionTrigger finger disease, De Quervains tenosynovitis
InterventionThere are 3 groups in this study:
1. Trigger finger in non-diabetics:
1.1. 15 patients treated with Laser therapy
1.2. 15 patients treated with splinting
2. Trigger finger in diabetics:
2.1. 15 patients treated with Laser therapy
2.2. 15 patients treated with splinting
3. Patients with De Quervains:
3.1.15 patients treated with Laser therapy
3.2. 15 patients treated with splinting

All K-laser patients are treated twice weekly for 6 weeks, at a fixed dosage of 6-8 Joules/cm2 and average power density of 1-2 Watts/cm2 with the treatment time to be adjusted based on the treatment size of the individual patient.

The Laser Treatment Parameters:

Wavelengths employed:
1. 660 nm (average power of 50 mW)
2. 800 nm (average power of 5 W)
3. 905 nm (average power of 5 W)
4. 970 nm (average power of 5 W)

Frequencies employed:
Each protocol consists of 10 sub-phases each with a different pulse frequency:
Phase 1: Continuous Wave (CW – frequency = 0 Hz)
Phase 2: 2 Hz (Duty Cycle = 50%)
Phase 2: 10 Hz (Duty Cycle = 50%)
Phase 3: 50 Hz (Duty Cycle = 50%)
Phase 4: 100 Hz (Duty Cycle = 50%)
Phase 5: 500 Hz (Duty Cycle = 50%)
Phase 6: 2500 Hz (Duty Cycle = 50%)
Phase 7: 7500 Hz (Duty Cycle = 50%)
Phase 8: 15,000 Hz (Duty Cycle = 50%)
Phase 9: 20,000 Hz (Duty Cycle = 50%)
Phase 10: Continuous Wave (CW – frequency = 0 Hz)

Treatment time:
3 minutes (+/- 10% for patient hand/arm size variation)

Power:
In CW mode, Peak Power = Average Power = 5 Watts
In Hz mode, Peak Power = 10 Watts, Average Power = 5 Watts

We will then measure outcome scores as defined by:

Functional:
Group 1:
1. Presence of finger locking or not
2. Clinical Tenderness at A1 or not

Group 2:
1. Presence of finger locking or not
2. Clinical Tenderness at A1 or not

Group 3:
Objective:
1. Lateral pinch strength
2. Tripod pinch strength
Subjective: better / same / worse

Symptom:
Group 1:
1. Pain according to Visual Analogue Score
2. Functional – is the finger better, the same, or worse

Group 2:
1. Pain according to Visual Analogue Score
2. Functional – is the finger better, the same, or worse.

Group 3:
1. Pain on Finklestein test – Yes /no.
2. Pain on resisted MCPJ1 Extension – Yes /no.
3. Pain according to Visual Analogue Score

If patients have not improved in either group we will then proceed to our standard level of care.
Intervention typeOther
Primary outcome measureDoes high intensity laser therapy reduce symptoms of finger locking and pain in trigger finger disease (a condition where finger tendons can inflammed and become locked in a flexed/bent position facing the palm), and does it reduce pain and improve strength in de quervains disease (inflammed tendons of the thumb).
Secondary outcome measures1. The number of laser treatments sufficient to treat trigger finger disease and de quervains
2. The number of complications prevented by treating patients with laser therapy versus splinting
3. The cost effectiveness of treating patients with laser therapy versus splinting
Overall study start date01/06/2013
Overall study end date01/06/2014

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexBoth
Target number of participants90
Participant inclusion criteriaWe have 3 separate cohorts in our study:

1. Cohort 1 – Trigger Finger - all adults, either sex, aged 18 and over with single or multiple digit trigger finger disease.

2. Cohort 2 – Trigger finger in diabetics with bilateral disease- all adults, either sex, aged 18 and over with symmetrical bilateral trigger finger(s) and a diagnosis of diabetes mellitus.

3. Cohort 3 – De Quervains - all adults, either sex, aged 18 and over with De Quervains tenosynovitis.
Participant exclusion criteriaCohort 1:
1. Under 18 years
2. Those with a diagnosis of diabetes mellitus
3. All patients with a diagnosis of any form of cancer
4. Any patient >65 years old
5. With mini–mental state examination (MMSE) <21

Cohort 2:
1. Under 18 years
2. All patients with a diagnosis of any form of cancer
3. Any patient >65 years old
4. With MMSE <21

Cohort 3:
1. Under 18 years
2. All patients with a diagnosis of any form of cancer
3. Any patient >65 years old
3. With MMSE <21
Recruitment start date01/06/2013
Recruitment end date01/06/2014

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

Guy's & St Thomas' NHS Foundation Trust
London
SE1 7EH
United Kingdom

Sponsor information

Guy's & St Thomas' NHS Foundation Trust (UK)
Hospital/treatment centre

c/o Karen Ignatian
Westminster Bridge Road
London
SE1 7EH
England
United Kingdom

Website http://www.guysandstthomas.nhs.uk
ROR logo "ROR" https://ror.org/00j161312

Funders

Funder type

Hospital/treatment centre

Guy's & St Thomas' NHS Foundation Trust (UK)

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan

Editorial Notes

06/01/2017: No publications found in PubMed, verifying study status with principal investigator.