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ClinicalTrials.gov enrollment closed later-stage tilt small index

Failed Back Surgery Syndrome: later-stage trial registry

A small indexed set (3 trials) with no open enrollment listed right now.

Corpus placement: #5,209 of 28,707 conditions by registered trial count.

3 US clinical trials · none currently recruiting · #5,209 of 28,707 conditions by registered trial count

Failed Back Surgery Syndrome: 3 US clinical trials tracked, none currently recruiting.

Failed Back Surgery Syndrome is the subject of 3 registered US clinical trials on ClinicalTrials.gov, none currently recruiting. 2 are in Phase 3-4 (later-stage) and 1 in Phase 1-2 (earlier-stage). The most active sponsor is University Hospitals Cleveland Medical Center, running 1 of these trials.

Enrollment posture brief

Registry condition failed-back-surgery-syndrome

OPEN 0 | RECR 0% | LATE 2 | EARLY 1 | RANK #5209 | SPON 1

Nearest open-share peer: Accelerated Phase Chronic Myelogenous Leukemia (0% recruiting · 12 trials)

Ablation80%ACL Reconstruction80%Abuse, Drug60%Acceptability60%Failed Back Surgery Synd (th…0%
Open-enrollment share among volume-matched conditions near Failed Back Surgery Syndrome

Failed Back Surgery Syndrome has no open enrollment in this registry pull (3 archived studies). Peers show how other volume-matched labels compare on open share. How peer matching works →

Key findings

What ClinicalTrials.gov does not surface for Failed Back Surgery Syndrome on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.

  1. Failed Back Surgery Syndrome is recruiting below its size-band peers.

    0 of 3 indexed trials (0%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

Phase 11Phase 31Phase 41

Phase Distribution

PhaseTrial count
Phase 1 1
Phase 3 1
Phase 4 1

Named interventions

Most-linked intervention names on Failed Back Surgery Syndrome records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Preoperative low-dose external beam radiation Procedure
1 trials
Lumbar nerve root decompression Procedure
1 trials
Precision SCS Device
1 trials
Intrathecal Drug Delivery System (IDDS) Device
1 trials
Continuous intrathecal prognostic infusion test Other
1 trials
Fentanyl Drug
1 trials
Bupivacaine Drug
1 trials
Placebo Drug
1 trials

US sites by state

Facility locations filed on Failed Back Surgery Syndrome trials. A trial with sites in several states counts in each.

Ohio 2 trials
Texas 1 trials
Pennsylvania 1 trials
New York 1 trials
Montana 1 trials
California 1 trials
Alabama 1 trials

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

What to do with this Failed Back Surgery Syndrome page

3 registered trials, 0 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Failed Back Surgery Syndrome condition card totals 3 registered trials; most-linked intervention Preoperative low-dose external beam radiation; top US site state Ohio. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.