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Postoperative Pain and Analgesic Use Following Lumbar Discectomy: A Comparative Study of Endoscopic Surgery and Open Surgery (DISCOPAIN)

9 septembre 2026 mis à jour par: Saint-Gregoire Private Hospital Center

The lifetime prevalence of lumbosacral radiculopathy is 3 to 5 percent. The most common cause is a lumbar disc herniation. In 10 to 20 percent of patients, medical treatment is insufficient, and surgery is recommended. Lumbar discectomy is the standard surgical treatment. In recent years, minimally invasive techniques-and endoscopic approaches in particular-have become widely adopted.

The main advantage of these techniques lies in their reduced invasiveness, which allows for the preservation of muscle and ligament structures, with less extensive detachment and cutting. This preservation is likely to enable faster rehabilitation during the first few weeks and months after surgery, as well as a shorter hospital stay.

However, the available data focus primarily on medium- and long-term outcomes, and few studies have specifically examined early postoperative pain. Yet this immediate period is a critical factor, particularly regarding patient comfort, analgesic use, and length of hospital stay; it is a major determinant of the quality of immediate recovery. There is very little robust comparative data from real-world clinical settings evaluating the impact of surgical technique on early postoperative pain following lumbar discectomy.

In this context, this study aims to compare changes in short-term low back pain intensity following lumbar discectomy, depending on the technique used (endoscopic versus conventional open surgery), under real-world clinical conditions.

Aperçu de l'étude

Statut

Recrutement

Les conditions

Type d'étude

Interventionnel

Inscription (Estimé)

140

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Lieux d'étude

      • Saint-Grégoire, France, 35760
        • Recrutement
        • Centre hospitalier Privé Saint-Grégoire
        • Contact:

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte
  • Adulte plus âgé

Accepte les volontaires sains

Non

La description

Inclusion Criteria:

  • Have had radicular and/or lower back pain for more than 6 weeks despite proper medical treatment, leading to the decision to schedule surgery
  • Have symptoms consistent with an MRI showing a herniated disc

Exclusion Criteria:

  • History of lumbar surgery
  • Complex Regional Pain Syndrome (CRPS) type 1 or 2
  • Multiple affected levels
  • Cauda equina syndrome
  • Unscheduled surgery
  • Spondylolisthesis
  • Significantly narrowed lumbar canal (Schizas C or D)
  • Pregnant, laboring, or breastfeeding women
  • Severe psychiatric disorder
  • Unwilling subject who cannot give consent or cannot return for scheduled visits as per the protocol
  • Person under legal protection (guardianship, conservatorship, or judicial safeguard)
  • Person deprived of liberty by judicial or administrative order
  • Person not covered by social security

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: Non randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Endoscopis surgery
The procedure is performed under general anesthesia, with the patient in the knee-chest position. After identifying the surgical site using a surgical fluoroscope, sterile skin preparation is performed (by swabbing the area and applying sterile drapes). The approach is percutaneous and transmuscular, using one channel for instruments and another for the endoscopic camera. After exposing the spinal canal, the nerve root is identified and protected. The herniated disc is then accessed following an incision in the posterior longitudinal ligament and resected using a disc forceps. The procedure concludes with skin closure.
The procedure is performed under general anesthesia, with the patient in the knee-chest position. After identifying the surgical site using a surgical fluoroscope, sterile skin preparation is performed (by swabbing the area and applying sterile drapes). The approach is percutaneous and transmuscular, using one channel for instruments and another for the endoscopic camera. After exposing the spinal canal, the nerve root is identified and protected. The herniated disc is then accessed following an incision in the posterior longitudinal ligament and resected using a disc forceps. The procedure concludes with skin closure.
Autre: Open surgery
The procedure is performed under general anesthesia, with the patient in the knee-chest position. After identifying the surgical level using a surgical fluoroscope, sterile skin preparation is performed (by swabbing the area and applying sterile drapes). A skin incision is made to allow for a posterior approach with muscle dissection. Recalibration is performed to expose the nerve structures. The nerve root is identified and protected; the herniated disc is then accessed after incision of the posterior longitudinal ligament and resected using a disc forceps. Closure is performed layer by layer (fascia, subcutaneous tissue, skin).
The procedure is performed under general anesthesia, with the patient in the knee-chest position. After identifying the surgical level using a surgical fluoroscope, sterile skin preparation is performed (by swabbing the area and applying sterile drapes). A skin incision is made to allow for a posterior approach with muscle dissection. Recalibration is performed to expose the nerve structures. The nerve root is identified and protected; the herniated disc is then accessed after incision of the posterior longitudinal ligament and resected using a disc forceps. Closure is performed layer by layer (fascia, subcutaneous tissue, skin).

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
To compare, under real-world clinical conditions, changes in the intensity of short-term low back pain following lumbar discectomy, based on the surgical technique used: endoscopic versus open surgery
Délai: day 3
Change in lumbar Visual Analog Scale (VAS) between preoperative and Day 3. VAS provides a pain intensity score out of 10, 0 representing "no pain" and 10 representing "pain as bad as it could possibly be".
day 3

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

4 septembre 2026

Achèvement primaire (Estimé)

4 septembre 2028

Achèvement de l'étude (Estimé)

1 août 2029

Dates d'inscription aux études

Première soumission

10 août 2026

Première soumission répondant aux critères de contrôle qualité

10 août 2026

Première publication (Réel)

14 août 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

10 septembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

9 septembre 2026

Dernière vérification

1 septembre 2026

Plus d'information

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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