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CompletedNCT07353944Updated Jan 21, 2026

TTNS vs PTNS in a County Hospital System.

An interventional study of Tibial nerve stimulation in Overactive Bladder, sponsored by Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center. Completed at 1 site in United States. Open to participants aged 18 Years to 90 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-01-21.

Sponsored by Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Apr 2018, 8 years 6 months ago, and no results have been posted to the registry.
  • Registered 8 years 11 months after the study started (first participant enrolled Jan 2017, registered Jan 2026).
Phase
Not applicable
Study type
Interventional
Enrollment
70
Allocation
Randomized
Ages
18 Years to 90 Years
Sex
All
01

Study summary

The goal of this clinical trial is to study whether transcutaneous tibial nerve stimulation (TTNS) is a feasible and satisfactory treatment for overactive bladder in Urogynecology patients who receive their care at a county hospital.

Researchers will compare outcomes with TTNS to patients who undergo percutaneous tibial nerve stimulation (PTNS).

The main questions it aims to answer are:

  • Is TTNS non-inferior to PTNS in terms of OAB symptom severity?
  • Are patients as satisfied with TTNS as they are with PTNS?
  • Are patients' symptoms improved with TTNS?

Participants will:

  • either undergo PTNS or be taught how to do TTNS therapy at home
  • complete surveys about their bladder symptoms and satisfaction with treatment
Read the detailed description

Patients who consent to this study will be randomly assigned to either receive PTNS in clinic weekly, or TTNS every other day at home. The severity of their overactive bladder symptoms and satisfaction with treatment will be assessed before starting treatment as well as 6 weeks, 12 weeks and 6 months after starting treatment. The results of these surveys will be compared between groups to determine whether TTNS is non-inferior to PTNS in this particular patient population.

02

Conditions studied

  • Overactive Bladder

Keywords

  • overactive bladder
  • OAB
  • PTNS
  • percutaneous tibial nerve stimulation
  • TTNS
  • transcutaneous tibial nerve stimulation
  • county hospital
  • underserved
03

In context

Urinary Bladder, Overactive

858 studies on the registry are indexed under Urinary Bladder, Overactive; 127 are open to participants now.

This study's enrollment of 70 is close to the median of 70 across 649 interventional studies indexed under Urinary Bladder, Overactive.

Browse Urinary Bladder, Overactive studies →

Lead sponsor

Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center is the lead sponsor of 67 studies on the registry; 1 is open to participants now.

Of its 11 completed or terminated interventional studies of FDA-regulated products, 5 (45%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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

  • age between 18 - 90 years old
  • patient of the Urogynecology clinic at Harbor UCLA medical center
  • diagnosis of overactive bladder
  • patient elects non-pharmacologic treatment of overactive bladder
  • English or Spanish speaking
  • able to consent and participate in research

Exclusion criteria

Exclusion Criteria:

  • cognitive impairment or diagnosis of dementia
  • diagnosis of neurogenic bladder
  • prior midurethral sling procedure
  • use of an electronic pacemaker
  • current pregnancy
  • incarcerated persons
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Investigator, Outcomes assessor)
Enrollment
70 participants (actual)

Study arms

  • Active comparator
    Percutaneous tibial nerve stimulation (PTNS)

    Participants undergo weekly 30-minute percutaneous tibial nerve stimulation in our clinic. The PTNS device is a neuromodulation system comprised of an external signal generator attached to one electrode that is placed on the patient's foot, and the other to an acupuncture needle that is inserted in the patient's inner ankle. It delivers a low electrical signal (20 Hz, 200ms pulse width) to the posterior tibial nerve, adjusted to the participant's perception of stimulation without pain.

    Device: Tibial nerve stimulation

  • Experimental
    Transcutaneous tibial nerve stimulation (TTNS)

    Participants receive a TENS unit and are taught how to conduct TTNS therapy at home at their recruitment visit. The TENS unit is a neuromodulation system comprised of an external signal generator attached to one electrode that is placed on the patient's foot, and the other to an electrode patch that is inserted in the patient's inner ankle. It delivers a low electrical signal (20 Hz, 200ms pulse width) to the posterior tibial nerve, adjusted to the participant's perception of stimulation without pain. They will be instructed to conduct this therapy every other day at home.

    Device: Tibial nerve stimulation

Interventions

  • DeviceTibial nerve stimulation

    neuromodulation therapy for overactive bladder that targets the posterior tibial nerve

    Also known as: PTNS, TTNS

06

What researchers measure

Primary outcomes

  1. ICIQ-OAB score

    OAB symptom severity

    Time frame: Baseline, 6 weeks, 12 weeks, 6 months post treatment initiation

Secondary outcomes

  1. Patient satisfaction

    Patient satisfaction with the intervention (Y/N; would you recommend it to others?)

    Time frame: 6 weeks, 12 weeks, 6 months post treatment initiation

  2. PGI-I

    Patient global assessment of overall improvement, graded on a scale of 1-7

    Time frame: 6 weeks, 12 weeks, 6 months post treatment initiation

  3. Compliance

    Number and percentage of PTNS visits (PTNS arm); Patient reported number of self-administered TTNS treatments per week

    Time frame: 6 months post treatment initiation

07

Study locations

1 site
  • Harbor UCLA Medical Center
    Torrance, California 90509, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 21, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07353944
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Responsible party
Tajnoos Yazdany, M.D. (Principal Investigator, Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center) — Principal investigator
First posted
Jan 21, 2026
Start date
Jan 18, 2017
Primary completion
Apr 30, 2018
Completion
Jun 30, 2018
Last update
Jan 21, 2026

Oversight

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

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This study is completed, as verified in Mar 2019. You cannot join it, but the record below documents what was studied.

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