Evidence map›Paper›PMID 21845480›Full record

ArticleTechniques in coloproctology2011

A new technique for sphincter-preserving anal fistula repair using a novel radial emitting laser probe.

A Wilhelm

3 registry-linked trialsAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in Techniques in coloproctology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 83 papers, 10 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed, 10 pooled it
5.6field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03017898 nasuspendednot on this mapstarted 2017, after this paper: background citation

Treatment of Anal Fistula With Laser Mediated Heat Coagulation Using Fistula Laser Closure (FiLaC)

TypeinterventionalSponsorRegion SkaneRan2017 to 2025Enrolled52ConditionsFistula-In-Ano, Anal FistulaArmsLaser Coagulation
NCT04161469 naunknown statusnot on this mapstarted 2019, after this paper: background citation

Laser Closure of Anal Fistula (FiLaC); Do we Need to Close Internal Orifice?

TypeinterventionalSponsorSurp Pırgiç Armenian HospitalRan2019 to 2020Enrolled80ConditionsAnal Fistula, Fistula in Ano, Sphincter Ani IncontinenceArmsLaser closure of the anal fistula tract (FiLaC), Internal orifice closure
NCT05201209 completednot on this mapstarted 2019, after this paper: background citation

LASER FiLaC™ (FISTULA LASER CLOSURE) : First-line Treatment of Complex Anal Fistulas

TypeobservationalSponsorFondation Hôpital Saint-JosephRan2019 to 2019Enrolled110ConditionsComplex Anal Fistula
3 · Its place in the literature

Who cites it

83 citing papers in PubMed, 10 syntheses or guidelines pooled it, 225 citations in OpenAlex.

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  14. Core-Out Fistulectomy Combined With Laser Ablation of the Trans-Sphincteric Fistula Tract: A Pilot Study of Efficacy and Safety.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Article
  15. Ligation of the intersphincteric fistula tractWorld journal of gastrointestinal surgery · 2026
    Article
  16. Article
  17. Evidence outside the box: Minimally invasive treatment for anal fistula.World journal of gastrointestinal surgery · 2025
    Review
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23 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

A WilhelmDepartment of General and Colorectal Surgery, St. Elisabeth Krankenhaus Köln-Hohenlind, Werthmannstr. 1, 50935 Cologne, Germany. arne.wilhelm@ebzkoeln.de
Krankenhaus Köln-Holweide · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Anal fistula repair still remains challenging. Up to 30% of fistulas persist after surgery despite many improvements in surgical skills and technique. One major reason for surgical failure is a persistent fistula track or remnants of the fistula epithelium which could not be removed during surgery. To overcome this problem, a novel technique was developed using a newly invented radial emitting laser probe ("FiLaC™", Biolitec, Germany) to destroy the fistula epithelium and to simultaneously obliterate the remaining fistula track. In a pilot study, we operated on 11 patients with cryptoglandular anal fistula. All patients underwent previous surgery up to 6 times prior to definitive surgery. In the primary operation, the initial abscess was drained, the internal opening of the fistula identified and seton drainage placed. During fistula repair, we used the flap technique for conventional closure of the internal opening. The remaining fistula track was cleaned mechanically, the laser inserted into the track and energy applied homogeneously at a wavelength of 1,470 nm and 13 watt. While providing continuous retraction of the probe, the remaining epithelium was destroyed and the fistula track obliterated. The median follow-up was 7.4 months. Nine out of 11 fistulas showed primary healing (81.8%). Only one minor form of incontinence (limited soiling) was observed and no complications occurred. The use of a novel diode laser source and a radial emitting laser probe in addition to conventional surgery is a very promising new technique in sphincter-preserving anal fistula repair. The observed healing rate is high. Due to minimized trauma to the sphincter muscle, there are good short-term functional results without observable procedure-related complications.

Indexed as

LasersAdultAgedAnal CanalEquipment DesignFemaleFollow-Up StudiesHumansLaser TherapyMaleMiddle AgedPilot ProjectsRectal FistulaTreatment OutcomeWound Healing

Identifiers

PMID21845480
OpenAlexW1982783267

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.