ClinicalTrials.gg
CompletedNCT04900220Updated Jun 23, 2023Results posted

Differences in Flare Reaction Incidence and Intensity Following Trigger Finger Injections

A Phase 4 interventional study of Betamethasone and Methylprednisolone in Trigger Finger, sponsored by West Virginia University. Completed at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-06-23.

Sponsored by West Virginia University · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
66
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Two common corticosteroids used for trigger finger treatment are betamethasone and methylprednisolone. Both injections are effective in treating trigger finger and the decision of which to use in treatment is currently a matter of the current practice and physician preference. The goal through this randomized trial is to see whether there is a difference between these two corticosteroids in inducing flare reactions and if there are any differences in the peak level of pain and their duration. Findings indicating a statistically significant difference in the incidence and/or intensity of the flare reactions would be clinically significant and would be evidence supporting the switch of current practice to one corticosteroid over the other.

Read the detailed description

Corticosteroid injections are effective non-surgical approach to treating trigger finger (stenosing tenosynovitis) with success rates reported as high as 92% after just one injection [1]. Among their side effects is a post-injection flare of increased pain that is attributed to crystal-induced synovitis. Reports of these flares in the literature have been rare. Recent evidence their incidence can be as high as 33%. The investigators feel it is a more common clinical issue than traditionally reported and it would be beneficial to control and reduce their incidence if possible.

Two common corticosteroids used for trigger finger treatment are betamethasone and methylprednisolone. Both injections are effective in treating trigger finger and the decision of which to use in treatment is currently a matter of the current practice and physician preference. There is no literature comparing the side effects, specifically flare reactions between these two treatments. The goal through this randomized trial is to see whether there is a difference between these two corticosteroids in inducing flare reactions and if there are any differences in the peak level of pain and their duration.

This is a double-blinded randomized trial enrolling patients into one of the two treatment groups. The volume of the doses will be standardized to 1 cc of either methylprednisolone (40 mg) or betamethasone (6 mg). Patients, who meet the inclusion criteria, will be instructed to complete a visual analog scale (VAS) of their pain (1-10) prior to the injection, during the injection and once a day for the following 7 days after the injection. The investigators estimate that a minimum of 30 patients in each group will be needed to achieve a minimum of 80% power and 0.05 significance. The incidence, intensity, time to peak and time to resolution of the flare reactions (defined as a 2-point increase from pre-injection pain) will be assessed and compared between the two groups. Findings indicating a statistically significant difference in the incidence and/or intensity of the flare reactions would be clinically significant and would be evidence supporting the switch of current practice to one corticosteroid over the other.

02

Conditions studied

  • Trigger Finger
03

In context

Trigger Finger Disorder

93 studies on the registry are indexed under Trigger Finger Disorder; 22 are open to participants now.

This study's enrollment of 66 is close to the median of 66 across 75 interventional studies indexed under Trigger Finger Disorder.

Browse Trigger Finger Disorder studies →

Lead sponsor

West Virginia University is the lead sponsor of 157 studies on the registry; 36 are open to participants now.

Of its 19 completed or terminated interventional studies of FDA-regulated products, 16 (84%) 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

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Single trigger injection
  • First time for the digit
  • No prior surgery on digit

Exclusion criteria

Exclusion Criteria:

  • Current oral use
  • Rheumatoid arthritis
  • More than one single digit involved
  • Previous injection in same digit
  • Prior surgery on same digit
  • Other injections in the same clinic on the same day
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
66 participants (actual)

Study arms

  • Active comparator
    Betamethasone

    betamethasone

    Drug: Betamethasone

  • Active comparator
    Methylprednisolone

    methylprednisolone

    Drug: Methylprednisolone

Interventions

  • The volume of the doses of steroid to be given will be standardized to 1 injection of 1 cc of betamethasone (6 mg)

  • The volume of the doses of steroid to be given will be standardized to 1 injection of 1 cc of methylprednisolone (40 mg)

06

What researchers measure

Primary outcomes

  1. Incidence of Pain

    Recorded when subject reports pain. Assessed using the visual analog scale (0-10 scale). Zero indicates no pain, 10 indicates worst pain ever

    Time frame: Up to 7 days

  2. Intensity of Pain

    Assessed using the visual analog scale (0-10 scale). Zero indicates no pain, 10 indicates worst pain ever

    Time frame: Up to 7 days

  3. Incidence of Flare Reaction

    Number of patients having a severe flare reaction

    Time frame: From baseline up to 7 days

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Results

Posted Jun 23, 2023

Participant flow

Patients seen in the Hand Clinic for single trigger finger issues were approached for the project.

Participant flow — Overall Study
MilestoneBetamethasoneMethylprednisolone
Started3333
Completed3232
Not completed11
Withdrew: Lost to follow-up11

Outcome measures

PrimaryIncidence of Pain

Recorded when subject reports pain. Assessed using the visual analog scale (0-10 scale). Zero indicates no pain, 10 indicates worst pain ever

Time frame:
Up to 7 days
Reported as:
Count of participants · Participants
Incidence of Pain
ParticipantsBetamethasoneMethylprednisolone
Incidence of Pain611
PrimaryIntensity of Pain

Assessed using the visual analog scale (0-10 scale). Zero indicates no pain, 10 indicates worst pain ever

Time frame:
Up to 7 days
Reported as:
Mean · score on a scale
Intensity of Pain
score on a scaleBetamethasoneMethylprednisolone
Baseline2.8 (0 to 10)2.1 (0 to 10)
Five Minutes0.3 (0 to 10)0.8 (0 to 10)
Day 11.4 (0 to 10)2.9 (0 to 10)
Day 21.3 (0 to 10)2.1 (0 to 10)
Day 31.0 (0 to 10)1.5 (0 to 10)
Day 40.7 (0 to 10)1.0 (0 to 10)
Day 50.6 (0 to 10)0.8 (0 to 10)
Day 60.6 (0 to 10)0.7 (0 to 10)
Day 70.5 (0 to 10)0.6 (0 to 10)
PrimaryIncidence of Flare Reaction

Number of patients having a severe flare reaction

Time frame:
From baseline up to 7 days
Reported as:
Count of participants · Participants
Incidence of Flare Reaction
ParticipantsBetamethasoneMethylprednisolone
Severe Flare25
No Severe Flare3027

Adverse events

Collected over Adverse events were reviewed over a 7 day period, from time of injection until flare resolution.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Betamethasone0/32 (0%)0/32 (0%)0/32 (0%)
Methylprednisolone0/32 (0%)0/32 (0%)0/32 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)BetamethasoneMethylprednisoloneTotal
Mean63.4 ± 12.758.5 ± 12.660.9 ± 12.8
Sex: Female, Male
Sex: Female, Male(Participants)BetamethasoneMethylprednisoloneTotal
Female182341
Male14923
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)BetamethasoneMethylprednisoloneTotal
Count of participants——0
Region of Enrollment
Region of Enrollment(participants)BetamethasoneMethylprednisoloneTotal
United States323264
Tobacco Use
Tobacco Use(Participants)BetamethasoneMethylprednisoloneTotal
Smokers426
Non-Smokers283058
Hand Dominance
Hand Dominance(Participants)BetamethasoneMethylprednisoloneTotal
Right292756
Left358
Side of Trigger
Side of Trigger(Participants)BetamethasoneMethylprednisoloneTotal
Right202040
Left121224
08

Study locations

2 sites
  • WVU Medicine University Town Center
    Morgantown, West Virginia 26501, United States
  • Ruby Memorial Hospital or Other WVU Healthcare Site
    Morgantown, West Virginia 26506, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 23, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04900220
Responsible party
Shafic Sraj, MD (Assistant Professor, West Virginia University) — Principal investigator
First posted
May 25, 2021
Start date
Sep 15, 2021
Primary completion
Dec 27, 2022
Completion
Apr 10, 2023
Results posted
Jun 23, 2023
Last update
Jun 23, 2023

Study contacts

Shatic Sraj, MD
principal investigator · West Virginia University

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drugs tested here: Betamethasone · Methylprednisolone

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