Durabilità dei suppl. Costruzioni con asta: tecnica con asta supplementare per fusioni spinali strumentate posteriori a segmento lungo
Durabilità delle strutture con aste supplementari - Tecnica SuppleMentAry Rod (SMART) - per procedure di fusione spinale strumentata posteriore a segmento lungo: uno studio comparativo retrospettivo multicentrico con strutture a doppia asta
This is a multicenter retrospective comparative cohort study. The index surgery for this study is primary or revision long-segment posterior thoracolumbar (TL) instrumented fusion using either a supplementary rod construct or a dual-rod construct. Eligible patients who already had index surgery, will be identified for enrollment through a review of medical records of the participating surgeons at the study sites.
Panoramica dello studio
Stato
Stato
Condizioni
Condizioni
Intervento / Trattamento
Intervento / Trattamento
Descrizione dettagliata
This multicenter retrospective comparative cohort study will enroll 1244 patients, who underwent primary or revision long-segment posterior thoracolumbar (TL) instrumented fusion using either a supplementary rod construct or a dual-rod construct. By comparing two groups of patients, ie, patients treated with supplementary rod constructs vs dual-rod constructs, in the setting of long-segment posterior instrumented spinal fusion, this study aims to provide quality evidence regarding the benefits of supplementary rod constructs in reducing the risk of RFs and other mechanical complications. This study shall provide the first long-term clinical evidence on clinical outcome and benefit of supplementary rod constructs.
All participating surgeons will be asked to identify a time point, denoted as X, when they started using predominantly either supplementary rod constructs or dual-rod constructs for long-segment posterior TL instrumented spinal fusion. This time point X must be on or before December 31, 2020 (the last eligible date for the index surgery). Participating surgeons will be instructed to select the time point X to be as early within the collection window as feasible to maximize the available FU period.
Once the time point X is identified for a participating surgeon, medical records of patients treated by this surgeon will be reviewed to identify consecutive eligible patients with the index surgery done between the time point X and December 31, 2020, inclusive. In the case that an eligible patient had undergone several surgeries during this period, the first primary or revision of long-segment posterior TL instrumented fusion using either a supplementary rod construct or a dual-rod construct is defined as the index surgery.
Patients will then be grouped based on the rod constructs into either the supplementary rod construct group or dual-rod construct group.
The study has two FU periods:
- The first FU period is the first 2 years after the index surgery. The primary analysis will be done using data from the first 2 years of FU.
- The second FU period ends on December March 31, 20232024. The duration of this FU therefore ranges from 3 years and 3 months to 10 years and 3 months.
The primary study endpoint is the occurrence of the first RF within 2 years after the index surgery.
Tipo di studio
Tipo di studio
Iscrizione (Stimato)
Iscrizione
Contatti e Sedi
Contatto studio
Contatto studio
- Nome: Viola Grünenfelder
- Numero di telefono: +41 79 696 33 97
- Email: viola.gruenenfelder@aofoundation.org
Backup dei contatti dello studio
- Nome: Alix Frischknecht
- Numero di telefono: +41 79 606 41 48
- Email: alix.frischknecht@aofoundation.org
Luoghi di studio
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Calgary, Canada, T2N 2T9
- Reclutamento
- University of Calgary Spine
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Contatto:
- Ganesh Swamy
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Toronto, Canada, M5T 2S8
- Reclutamento
- University of Toronto
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Contatto:
- Stephen Lewis
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Contatto:
- Christopher Nielsen
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Hong Kong, Cina
- Completato
- Duchess of Kent Children's Hospital
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Hamamatsu, Giappone, 431-3192
- Completato
- Hamamatsu University School of Medicine
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Tokyo, Giappone, 113-8654
- Reclutamento
- University of Tokyo
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Contatto:
- So Kato, Prof
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Kolkata, India
- Reclutamento
- Kothari Medical Centre
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Contatto:
- Saumayajit Basu, MD
- Email: saumyajitbasu@hotmail.com
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Barcelona, Spagna, 08035
- Reclutamento
- Hospital Vall d´Hebron
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Contatto:
- Ferran Pellisé, MD
- Email: 24361fpu@comb.es
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California
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Redwood City, California, Stati Uniti, 94588
- Reclutamento
- Stanford Spine Clinic
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Contatto:
- Serena Hu, MD
- Email: shu3@stanford.edu
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Sacramento, California, Stati Uniti, 95819
- Reclutamento
- University of California
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Contatto:
- Yashar Javidan
- Email: yjavidan@ucdavis.edu
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San Francisco, California, Stati Uniti, 94144
- Terminato
- UCSF Spine Center
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Maryland
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Baltimore, Maryland, Stati Uniti, 21287
- Reclutamento
- John Hopkis Hospital
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Contatto:
- Khaled Kebaish
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Minnesota
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Minneapolis, Minnesota, Stati Uniti, 55454
- Reclutamento
- University of Minnesota Medical Center
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Contatto:
- David Polly, MD
- Email: pollydw@umn.edu
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Missouri
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St Louis, Missouri, Stati Uniti, 63110
- Reclutamento
- Washington University in St. Louis, School of Medicine
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Contatto:
- Brian Neuman
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St Louis, Missouri, Stati Uniti, 63310
- Completato
- Washington University in St. Louis, School of Medicine, Saint Louis, Missouri 63110
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New York
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New York, New York, Stati Uniti, 10032
- Reclutamento
- Columbia University / NYP Och Spine Hospital
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Contatto:
- Zeeshan Sardar
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Virginia
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Charlottesville, Virginia, Stati Uniti, 22908
- Reclutamento
- University of Virginia
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Contatto:
- Justin S Smith, MD, PhD
- Numero di telefono: 434-243-6339
- Email: jss7f@virginia.edu
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Contatto:
- Judith G Beenhakker
- Email: JGB3P@uvahealth.org
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Istanbul, Turchia (Türkiye)
- Reclutamento
- Acibadem Maslak Hospital
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Contatto:
- Caglar Yilgor, MD
- Email: caglaryilgor@gmail.com
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Contatto:
- Ahmet Alanay
- Email: aalanay@gmail.com
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Criteri di partecipazione
Criteri di ammissibilità
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Patients who underwent long-segment posterior thoracolumbar (TL) instrumented fusion
Descrizione
Inclusion Criteria:
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Age 45 years and older.
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Patients receiving long-segment posterior TL instrumented fusion using either supplementary rod constructs or dual-rod constructs (the index surgery).
- Long-segment is defined as the UIV at a thoracic level and the LIV at the sacrum/ilium.
- Supplementary rod constructs are defined as: in addition to the traditional two primary rods, at least one supplementary rod (eg, accessory rods or satellite rods) is used, and at least one supplementary rod and one primary rod (ie, at least two rods) together must span multiple (≥ 2) vertebral levels. The supplementary rod constructs do not include rods connected end-to-end or side-to-side that do not bridge multiple vertebral levels.
- The index surgery can be a primary surgery or a revision surgery.
- The index surgery, staged or non-staged, must use posterior spinal fusion but can be in combination with other approaches such as an anterior procedure.
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If the index surgery is a revision surgery, the primary rods must be replaced in the revision surgery, with the exception of Harrington or Luque rods which can remain in place.
o If the Harrington or Luque rods remain in situ, they must already have the UIV at the thoracic level and the LIV at the sacrum/ilium, or an extension of the existing Harrington or Luque is performed such that the UIV is at the thoracic level and the LIV at the sacrum/ilium.
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The index surgery was performed between January 1, 2014, and December 31, 2020, inclusive.
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Minimum 3 months of FU after the index surgery.
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Ability to provide informed consent according to the IRB/EC defined and approved procedures if applicable for retrospective data analysis.
Exclusion Criteria:
- Spinal fusion performed for acute trauma (ie, ≤ 1 year of trauma).
- Spinal fusion performed for tumor.
- Spinal fusion performed for infection.
- Patients with Parkinson's Disease.
- Patients with neuromuscular disorders.
- Patients with spine malignancies requiring chemo- or radiation therapy.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Modelli osservazionali: COHORT
- Prospettive temporali: RETROSPECTIVE
Numero di gruppi/coorti
Coorti e interventi
Gruppo / CoorteGruppo / Coorte |
Intervento / TrattamentoIntervento / Trattamento |
|---|---|
|
primary/revision long-segment posterior TL instrumented fusion with dual-rod constructs
The index surgery for this study is the primary or revision of long-segment posterior TL instrumented fusion using dual-rod construct. |
long-segment posterior TL instrumented fusion with either supplementary rod constructs or dual-rod constructs. |
|
primary/revision long-segment posterior TL instrumented fusion with supplementary rod constructs
The index surgery for this study is the primary or revision of long-segment posterior TL instrumented fusion using either a supplementary rod construct. |
long-segment posterior TL instrumented fusion with either supplementary rod constructs or dual-rod constructs. |
Cosa sta misurando lo studio?
Misure di risultato primarie
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Rod fracture (RF)
Lasso di tempo: 2 years
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Incidence of rod fracture(s) |
2 years
|
Misure di risultato secondarie
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Time to rod fracture
Lasso di tempo: 2 years
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Time to the first rod fracture after index surgery |
2 years
|
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Time to rod fracture
Lasso di tempo: 10 years and 3 months
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Time to the first rod fracture after index surgery |
10 years and 3 months
|
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Configurations of supplementary rod constructs
Lasso di tempo: Baseline
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Descriptions of configurations of supplementary rod constructs |
Baseline
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Treatment for rod fracture
Lasso di tempo: 10 years and 3 months
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Descriptions of different treatment strategies for rod fractures |
10 years and 3 months
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Recurrent RFs
Lasso di tempo: 10 years and 3 months
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Incidence of recurrent rod fractures |
10 years and 3 months
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Other mechanical failures
Lasso di tempo: 10 years and 3 months
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Other mechanical failures other than rod fractures |
10 years and 3 months
|
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Surgical complications
Lasso di tempo: 10 years and 3 months
|
Selective surgical complications |
10 years and 3 months
|
Collaboratori e investigatori
Sponsor
Sponsor
Investigatori
Investigatori
- Investigatore principale: Justin S Smith, MD, PhD, Professor of Neurosurgery Chief of Spine Division, Fellowship Director University of Virginia
Studiare le date dei record
Studia le date principali
Inizio studio (Effettivo)
Inizio studio
Completamento primario (Stimato)
Completamento primario
Completamento dello studio (Stimato)
Completamento dello studio
Date di iscrizione allo studio
Primo inviato
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Primo Inserito
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento pubblicato
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Altri numeri di identificazione dello studio
Altri numeri di identificazione dello studio
- SMART
Piano per i dati dei singoli partecipanti (IPD)
Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?
Informazioni su farmaci e dispositivi, documenti di studio
Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti
Studia un dispositivo regolamentato dalla FDA degli Stati Uniti
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