The Degen Study: Post-market Clinical Follow-up on the PASS LP, PASS Degen and PASS Tulip Systems (PASS DEGEN) (PASS DEGEN)

April 10, 2026 updated by: Medicrea International

The Degen Study: Post-market Clinical Follow-up on the PASS LP, PASS Degen and PASS Tulip Systems.

The purpose of this post-market clinical study is to evaluate the long-term safety and efficacy of the MEDICREA's systems PASS LP, PASS DEGEN, and PASS Tulip PRIME to treat degenerative diseases. This study is supporting the clinical evaluation report. From the standard-of-care perspective, the results of The Degen study are expected to contribute to a better understanding of expected safety and clinical outcomes from a short (intra- and peri-operative) to a medium-term follow-up (post-operatively).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
77

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Bruges, France, 33520
        • Clinique du Dos Bordeaux - Terrefort
      • Cornebarrieu, France, 31700
        • Clinique des Cèdres
      • Tours, France, 37044
        • CHRU Tours, Hôpital de Bretonneau
    • Île-de-France Region
      • Paris, Île-de-France Region, France, 75651
        • Hôpital Pitié-Salpêtrière AP-HP

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

All patients

Description

Inclusion Criteria:

  • Patients of at least 18 years old
  • Patient suffering from a spinal degenerative disease.
  • Patient requiring spinal surgery for less than 4 levels for a spinal degenerative disease
  • Patient implanted with MEDICREA's products, or patients who are candidate to receive including at least the PASS LP and/or PASS DEGEN and/or PASS TULIP Prime implants
  • Patient affiliated to a national insurance system

Exclusion Criteria:

  • Patient unable or unwilling to sign and understand an information note with proof of patient consent
  • Patient unable to complete a self-administered questionnaire
  • Patient presenting contra-indications to a Xray follow-up
  • Patient of more than 18 years old under a protection procedure
  • Patient judged as non-compliant by the investigator or not able to come back for follow-up visits up to 2 years

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
PASS LP implants
Patient suffering from a spinal degenerative disease and who is operated with PASS LP
Device: PASS LP implants
Thoraco lumbar arthrodesis
PASS Degen implants
Patient suffering from a spinal degenerative disease and who is operated with PASS DEGEN
Device: PASS DEGEN
Thoraco lumbar arthrodesis
PASS Tulip PRIME implants
Patient suffering from a spinal degenerative disease and who is operated with PASS TULIP PRIME
Device: PASS TULIP PRIME
Thoraco lumbar arthrodesis

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Participant Who Achieved Their Fusion at 24 Months
Time Frame: At 24months
The primary endpoint is the fusion status of each patient at the 24-month visit postoperative. This fusion assessment will be done through the analysis of the standard of care imaging (CT-scan, X-rays, and/or MRI) by the investigator and through the clinical examination of the patient by the investigator.
At 24months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Evolution of the Pain (VAS)
Time Frame: Preoperative, and 1-6, 12 and 24 months postoperative
Change of leg and back pain score from the preoperative visit to all available postoperative timepoints: from 0 (better) to 10 (worst)
Preoperative, and 1-6, 12 and 24 months postoperative
Quality of Life With ODI
Time Frame: Preoperative, and 1-6, 12 and 24 months postoperative
Change of non-validated ODI score from the preoperative visit to all available postoperative timepoints: from 0 (better) to 50 (worst)
Preoperative, and 1-6, 12 and 24 months postoperative
Quality of Life With SF-12
Time Frame: Preoperative, and 1-6, 12 and 24 months postoperative
Change of non-validated SF-12 score from the preoperative visit to all available postoperative timepoints: from to 0 (better) to 5 (worst) by question, then questions are combined following the SF12 provider recommendation. The scoring yields two summary measures: the Physical Component Summary (PCS) and the Mental Component Summary (MCS). The PCS and MCS can be between O and 100.
Preoperative, and 1-6, 12 and 24 months postoperative
Surgeons'Satisfaction With These Implants and Instruments
Time Frame: During the surgery and until the 24months postoperative visit
Surgeons will be requested to complete questions about device/surgery satisfaction.
During the surgery and until the 24months postoperative visit
Fusion Status at the 1/6 Month and 12-month Visit
Time Frame: At the 1-6, and 12 months postoperative
The primary objective is defined as the ability of the implant to promote the stabilization
At the 1-6, and 12 months postoperative
Patient Satisfaction at All Available Postoperative Timepoints
Time Frame: At 1-6, 12 and 24 months postoperative

Patient satisfaction is used to evaluate patient satisfaction after surgery and during the follow-up period.

Satisfaction is measured at four different levels: 1 (better) to 4 (worst)
At 1-6, 12 and 24 months postoperative

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Medicrea International

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 17, 2018

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 22, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 22, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 3, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 10, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 17, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 1, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 10, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 0313

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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