Vertebral Bone Quality and Prediction of Screw Loosening in Spine Fusion (QOAR)

January 12, 2023 updated by: Assistance Publique - Hôpitaux de Paris
Finding a way to use Vertebral CT scan will help to predict screw loosing risk in spinal fusion for degenerative spine disease. Patients who will undergo at least two spine fusion levels for degenerative spine disease will be enrolled in. Before surgery, patients will undergo a spinal QCT scan with a calibrated phantom. The calibrated bone density, at bone-implant interface, will be assessed using dual energy CT scan immediately after surgery, and six months later. The primary outcomes will be the difference between the two values of the bone implant interface. The difference between density values will be correlated to the pre-op bone density value.

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.

Detailed Description

Screw loosening is a real problem in degenerative spine surgery because of the morbidity of secondary surgery sometimes needed for elderly patients. Today, there is no real possibility to know before surgery if cemented screws are needed or not. The use of cemented screws has its morbidity. In fact, bone densitometry is not a good exam to predict the bone quality in degenerative spine because of the arthritis. T-score in degenerative spine can be overestimated. The goal of our study is analyze the bone-implant interface after spine fusion using dual-energy CT scan technology which can provide pictures without artifact compared to standard CT scan. This is a prospective observational monocentric study. Patients over 18 years old and have undergone at least two primary spine fusion levels will be enrolled. The exclusion criteria are the use of cemented screws, secondary surgery and neurodegenerative disease. The primary outcome will be the change in the bone-implant interface at six months post-surgery compared to the interface after surgery. The change will be assessed by calibrated dual CT scan. The interface bone density will be assessed using calibrated scans, and correlate to the true vertebral bone density measured before surgery with a QCT. We hope that this study can provide a simple and reproducible help for surgeons to choose between uncommented and cemented screws for their spine fusions surgeries.

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.
28

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
      • Paris, France, 75013
        • Hôpital Pitie Salpétrière

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

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients will be recruited by their surgeon during the current consultation 3 months before the surgery where the decision must support an arthrodesis of at least 2 levels between T3 and S1. The surgeon checks the inclusion criteria and offers the patient to participate. Inclusion will be done during this consultation. Patients will be informed by the surgeon of the nature of the study. They are intended to provide information to this effect and a certificate of non-opposition to the participation will be.

Description

Inclusion Criteria:

  • More than 18 years old
  • needed a minimum 2 levels spinal fusion
  • agreed protocol

Exclusion Criteria:

  • Cimented pedicular screws
  • secondary surgery
  • neurodegenerative disease

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

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
Change of bone-implant interface at 6-month follow up compared to post operative interface assessed on Dual energy CT Scan
Time Frame: 6 montths
Assessment of bone-implant interface (1 to 3 mm around the screw) using calibrated bone density on spinal dual energy CT scan just after surgery and at 6 months of follow up. Comparison between the two measured values.
6 montths

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
Time Frame
evolution of bone density of non instrumented levels between T0 and 6 months follow up assessed with Dual Energy CT scan
Time Frame: 6 months
6 months

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.
Assistance Publique - Hôpitaux de Paris

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Hugues HM PASCAL-MOUSSELARD, PH, Assistance Publique - Hôpitaux de Paris

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.
September 25, 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.
June 25, 2022

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.
June 25, 2022

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).
August 27, 2018

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.
August 28, 2018

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.
August 29, 2018

Study Record Updates

Last Update Posted (Estimate)

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.
January 13, 2023

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.
January 12, 2023

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.
March 1, 2022

More Information

Terms related to this study

Keywords

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.
  • NI17046J

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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