CLUBE (UBE Stability / Dynamic Radio)

NCT ID: NCT06904326

Last Updated: 2025-11-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

400 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-05-22

Study Completion Date

2027-08-31

Brief Summary

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Degenerative pathologies of the spine affect a large proportion of the increasingly ageing population, and are a major public health issue. When conservative treatments (physiotherapy, analgesics, infiltrations) fail, surgical treatment is preferred.

Traditionally, a simple lumbar recalibration operation is preferred (bilateral laminectomy decompression), but this may affect spinal stability. In cases of spondylolisthesis or preoperative instability, lumbar fusion (arthrodesis) is sometimes necessary to avoid the risk of major instability, but such an operation is not without risk and may require repeat surgery.

The development of new surgical techniques such as uni or bilateral laminotomies, which are less radical, has made it possible to avoid some arthrodeses. Nowadays, the emergence of new surgical techniques such as endoscopy has further reduced the risk of destabilization (shorter post-operative convalescence, less atrophy of the paraspinal muscles) and improved surgeon comfort (better vision and easier instrument handling).

Unilateral biportal endoscopy (UBE) is one of two endoscopic techniques and has proven its effectiveness for lumbar decompression in terms of clinical benefits. However, there is no scientific evidence on spinal stability after recalibration under UBE.

We believe that minimizing invasiveness with UBE during simple lumbar recalibration surgery can preserve spinal stability, thereby reducing the need for lumbar fixation and lowering the cost of care.

We therefore propose to study the maintenance of spinal stability using dynamic radiography at 3 months post-operatively in patients undergoing lumbar recalibration surgery with UBE.

Detailed Description

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Spinal stability is defined by the absence of abnormal mobility (sagittal translation of at least 3 mm) between flexion and extension movements and will be assessed on the 3-months postoperative dynamic radiography.

Patients will undergone an additional dynamic radiography 3 months after surgery to assess their spinal stability.

Conditions

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Spinal Instability

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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postoperative dynamic radiography

all patients will perform a dynamic radiography 3 months after surgery

Group Type EXPERIMENTAL

Postoperative dynamic radiography

Intervention Type OTHER

Participants will perform a dynamic radiography 3 months after lumbar decompression surgery under UBE to study vertebral instability

Interventions

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Postoperative dynamic radiography

Participants will perform a dynamic radiography 3 months after lumbar decompression surgery under UBE to study vertebral instability

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patient ≥ 50 ans,
* Patient requiring single-level or 2-levels lumbar decompression surgery under UBE,
* Patients who underwent dynamic radiography within 3 months prior to surgery,
* Patient who received information on the study and who signed the consent form.

Exclusion Criteria

* Presence of a mobile spondylolisthesis with a ≥ 3 mm difference between flexion and extension movements on preoperative dynamic radiography,
* Patient with history of lumbar arthrodesis,
* Patient not available for study follow-up.
Minimum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Clinique Saint Jean, France

OTHER

Sponsor Role lead

Responsible Party

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Guillaume LONJON

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Clinique St Jean Sud de France

Montpellier, , France

Site Status RECRUITING

Countries

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France

Central Contacts

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Guillaume Lonjon, Dr

Role: CONTACT

(0)467413453 ext. +33

Marion MAYNADIER

Role: CONTACT

(0)467413453 ext. +33

Facility Contacts

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Cecile Spirito

Role: primary

+33467413399

Cécile SPIRITO

Role: backup

+33467413399

Other Identifiers

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2025-A00134-45

Identifier Type: -

Identifier Source: org_study_id

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