CClinicalTrials.gg
CompletedNCT02349334CONFIDeNTUpdated Jan 28, 2015

UK Trial of Percutaneous Tibial Nerve Stimulation in Patients With Faecal Incontinence

A Phase 3 interventional study of Percutaneous Tibial Nerve Stimulation in Faecal Incontinence and Bowel Incontinence, sponsored by Queen Mary University of London. Completed. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2015-01-28.

Sponsored by Queen Mary University of London · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
227
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Faecal incontinence occurs when a person passes faeces (stools) without the usual control. It is a distressing condition that is actually very common although under-reported because of embarrassment. Milder symptoms may be managed by treatments such as dietary change, drugs and bowel retraining, but many patients still resort to surgery to improve symptoms. Although several operations exist to treat incontinence e.g. those aiming to repair damaged anal sphincter muscles, it is now clear that these often have poor results.

Two relatively new treatments called sacral nerve stimulation (SNS) and percutaneous tibial nerve stimulation (PTNS) involve sending pulses of electricity to the nerves controlling the bowel and muscles of the anus (anal sphincter).

SNS does this by inserting electrodes in the lower back just above the tailbone and connecting them to an implanted electrical stimulator which is buried in the buttock and acts a bit like a heart pacemaker. SNS is a relatively well-established treatment in specialist centres, which has been used for over 10 years. It has been shown in studies to be successful for faecal incontinence achieving some improvement in at least three quarters of patients. In Europe, this procedure is fast becoming first treatment offered when non-surgical treatments fail. Nevertheless, SNS is not a miracle cure for all, requiring 2 operations, with potential complications and expensive equipment (> £10,000 approx).

PTNS is a newer treatment, which involves electrically stimulating a nerve at the ankle, using a very small needle, as an outpatient (a bit like acupuncture). This sends signals back to the spine region to try and improve symptoms of faecal incontinence. Since this is a newer treatment, fewer studies have been performed to quantify how successful it is, but early results of PTNS suggest that it may be as good as SNS. If this is true, this is very important because it is much less invasive and considerably cheaper than SNS (equipment £500 per patient).

This project will for the first time determine how effective PTNS is in the treatment of patients with faecal incontinence, by comparing it to sham (fake stimulation). This study is a properly designed clinical trial of 212 patients in at least 14 UK Specialist Centres.. The results of this trial will lead to direct benefits for patients and the NHS.

02

Conditions studied

  • Faecal Incontinence
  • Bowel Incontinence

Browse trials for

03

In context

Fecal Incontinence

312 studies on the registry are indexed under Fecal Incontinence; 57 are open to participants now.

This study's enrollment of 227 is above the median of 50 across 216 interventional studies indexed under Fecal Incontinence.

Browse Fecal Incontinence studies →

Lead sponsor

Queen Mary University of London is the lead sponsor of 250 studies on the registry; 59 are open to participants now.

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

  • Faecal incontinence sufficiently severe enough to warrant intervention
  • Failure of appropriate conservative therapies
  • Age ≥ 18 years

Exclusion criteria

Exclusion Criteria:

  • Inability to provide informed consent for the research study
  • Inability to fill in the detailed bowel diaries required for outcome assessments (this will exclude participants who do not speak / read English)*
  • Neurological diseases, such as diabetic neuropathy, multiple sclerosis and Parkinson's disease (any participant with painful peripheral neuropathy)
  • Anatomical limitations that would prevent successful placement of needle electrode
  • Other medical conditions precluding stimulation: e.g. bleeding disorders, certain cardiac pacemakers, peripheral vascular disease or ulcer, lower leg cellulitis
  • Congenital anorectal anomalies or absence of native rectum due to surgery
  • A cloacal defect
  • Present evidence of external full thickness rectal prolapse
  • Previous rectal surgery (rectopexy / resection) done \< 12 months ago (24 months for cancer),
  • Stoma in situ
  • Chronic bowel diseases such as inflammatory bowel disease leading to chronic uncontrolled diarrhoea
  • Pregnancy or intention to become pregnant
  • Previous experience of SNS or PTNS
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
227 participants (actual)

Study arms

  • Sham comparator
    Sham electrical stimulation

    Sham electrical stimulation to forefoot by TENS

    Device: Percutaneous Tibial Nerve Stimulation

  • Active comparator
    Percutaneous tibial nerve stimulation

    Active PTNS via Urgent PC Neuromodulation device, Uroplasty

    Device: Percutaneous Tibial Nerve Stimulation

Interventions

  • DevicePercutaneous Tibial Nerve Stimulation
06

What researchers measure

Primary outcomes

  1. Primary outcome: Binary - success or failure based on % patients achieving > or = 50% reduction in faecal incontinence episodes

    From 2 weekly bowel diaries before and after treatment

    Time frame: 3 months

Secondary outcomes

  1. Reduction in faecal incontinence episodes

    Time frame: 3 months

  2. Proportion of patients achieving >25%, >75% and 100% reduction in faecal incotinence episodes

    Time frame: 3 months

  3. Reduction in Cleveland Clinic Constipation Score

    Time frame: 3 months

07

Study locations

No study locations are listed for this record.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 28, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02349334
Lead sponsor
Queen Mary University of London
Responsible party
Sponsor
First posted
Jan 28, 2015
Start date
Jan 2012
Primary completion
Feb 2014
Completion
Sep 2014
Last update
Jan 28, 2015

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2015. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion