- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01390285
Transcutaneous Electrical Nerve Stimulation in Relation to Central Sensitization in Osteoarthritis of the Knee (TENSSENS)
Effect of Transcutaneous Electrical Nerve Stimulation in Relation to Central Sensitization in Patients With Osteoarthritis of the Knee: a Randomized Controlled Clinical Trial.
Background
Central sensitization has recently been documented in patients with knee osteoarthritis. So far, the presence of central sensitization has not been considered as a confounding factor in studies assessing the pain inhibitory effect of TENS on osteoarthritis of the knee.
Purpose
First, to explore the pain inhibitory effect of burst TENS in OAk patients. Second, to explore the prognostic value of central sensitization on the pain inhibitory effect of TENS in Oak patients.
Methods
Patients with knee pain due to OAk will be recruited through advertisements in local media. Temporal summation, before and after a heterotopic noxious conditioning stimulation, will be measured. In addition, pain on a numeric rating score and WOMAC subscores for pain and function will be assessed. Patients will be randomly allocated to one of two treatment groups (TENS, sham TENS). Follow-up measurements will be scheduled after a period of 6 and 12 weeks.
Discussion/ conclusion
TENS influences pain through the electrical stimulation of low-threshold A-beta cutaneous fibers. The responsiveness of central pain-signaling neurons of OAk patients who are centrally sensitized may be augmented to the input of these electrical stimuli. This would encompass an adverse therapy effect of TENS. Therefore it might be interesting to identify a subgroup of symptomatic OAk patients, ie. non-sensitized patients, who are likely to benefit from burst TENS.
Study Overview
Status
Conditions
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- To be included, patients need to be over 50 years old.
- All should have osteoarthritis in at least one knee fulfilling the American College of Rheumatology classification criteria and report peak knee pain over the last 24 h of more than 3 on a Numeric Rating Score (0-10 scale).
Exclusion Criteria:
- Patients are excluded if they have had a knee surgery or intra-articular corticosteroid injection within 6 months
- Current or past (within 4 weeks) oral corticosteroid use
- A history of knee joint replacement or tibial osteotomy
- Contraindications to burst TENS (pacemakers, epilepsy, dermatological conditions, abnormal sensation in the knees, pregnancy) or if they are unable to apply TENS independently
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: TENS
|
The subjects that enter the TENS-group will be asked to apply the TENS therapy for at least 40 minutes continuously per day.
The parameters of the current will not be changed during the study (pulse: 250 µsec; internal frequency: 100Hz; burst frequency 3 Hz; intensity: until an unpleasant but not painful sensation is acquired).
|
Sham Comparator: Sham TENS
|
The patients that are assigned to the sham TENS will receive an inactive placebo TENS therapy using a nonfunctional unit that appears to work but provides no stimulus.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Overall average knee pain
Time Frame: after 6 and 12 weeks
|
numeric rating score
|
after 6 and 12 weeks
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change from baseline in self reported knee pain and difficulty with physical function (WOMAC)
Time Frame: baseline - 6 weeks
|
baseline - 6 weeks
|
Change from baseline in self reported knee pain and difficulty with physical function (WOMAC)
Time Frame: baseline - 12 weeks
|
baseline - 12 weeks
|
Collaborators and Investigators
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Tenssens
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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