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Post-Marketing-Studie von MagnetOs Putty im Vergleich zu Autotransplantaten bei Patienten, die sich einer posterolateralen Lumbalfusion unterziehen (PROOF)

3. November 2026 aktualisiert von: Kuros Biosurgery AG

Eine prospektive, randomisierte Single-Center-Studie zur Bewertung der Sicherheit und Leistung von MagnetOs Putty im Vergleich zu Autotransplantaten bei Patienten, die sich einer zweistufigen instrumentierten posterolateralen lumbalen/thorakolumbalen Fusion (PLF) unterziehen

This is a phase IV post-marketing study for MagnetOs Easypack Putty. MagnetOs Easypack Putty is a synthetic bone graft extender product that is routinely used by surgeons as a treatment for patients with degenerative disc disease or spinal trauma undergoing spinal fusion surgery.

In this study, MagnetOs Easypack Putty will be used according to the latest U.S. Instructions For Use, standalone in the posterolateral spine.

Studienübersicht

Status

Aktiv, nicht rekrutierend

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

In this study, following a screening period of a maximum of 30 days, 60 patients will undergo up to two-level instrumented posterolateral fusion (PLF) procedure. Prior to surgery, each patient will be randomized to receive MagnetOs Easypack Putty standalone on the assigned side of the spine and Demineralized Bone Matrix or Fibers mixed with local autograft bone on the other at the diseased levels. They will be followed up at discharge, Week 2, Month 3, Month 6, and Month 12. An interim analysis will be performed once 30 patients have completed their Month 6 visit and have measurements for the endpoints available to measure effectiveness. The primary endpoint will be analyzed at Month 12.

In this study, MagnetOs Easypack Putty will be applied according to the latest Instructions for Use approved in the United States. Specifically, MagnetOs Easypack Putty will be used standalone in patients up to two-level degenerative disc disease with segmental mechanical spinal instability requiring treatment with an instrumented posterolateral spine fusion procedure. The fusion procedure (PLF) will be left to the surgeon's discretion.

Radiographs will be obtained at Screening, Discharge, Month 3, Month 6 and Month 12. CT scans will only be obtained at Month 6 and Month 12.

Studientyp

Interventionell

Einschreibung (Geschätzt)

60

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

    • California
      • Irvine, California, Vereinigte Staaten, 92697
        • The Regents of the University of California- Irvine Campus
    • Michigan
      • Grand Rapids, Michigan, Vereinigte Staaten, 49503
        • Corewell Health
    • Missouri
      • St Louis, Missouri, Vereinigte Staaten, 63130
        • The Washington University
    • Pennsylvania
      • Philadelphia, Pennsylvania, Vereinigte Staaten, 19107
        • Rothman Orthopaedic Institute
    • Tennessee
      • Nashville, Tennessee, Vereinigte Staaten, 37209
        • Tennessee Orthopaedic Alliance
    • Washington
      • Seattle, Washington, Vereinigte Staaten, 98104
        • University of Washington

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Patient is able to read/be read, understand, and provide written informed consent and has signed the Institutional Review Board (IRB) approved informed consent.
  • Male or female patient ≥ 18 years old.
  • Patients with segmental mechanical spinal instability requiring arthrodesis surgery.

Instability can be either caused by degenerative disc disease or by traumatic injury to the spinal column. Patient requiring a maximum of two-level instrumented posterolateral lumbar/thoraco-lumbar fusion (T11 - S1) will be enrolled. Mechanical instability is defined by the presence of one or more of the following:

  1. instability (angulation ≥ 5 degrees or translation ≥ 3 mm on flexion/extension radiographs),

  2. decreased disc height by > 2 mm, but dependent upon the spinal level

  3. Grade II or more listhesis

  4. TLICS equal or greater than 5

  5. Unstable burst fracture

    • Failed conservative treatment (physical therapy, bed rest, medications, spinal injections, manipulations, or transcutaneous electrical nerve stimulation) for a minimum period of 3 months prior to study enrollment (if the patient undergoes elective surgery). Patients who have spinal instability (as defined above in inclusion criteria number three), caused by acute trauma requiring urgent surgical treatment are excluded from this criterion.

Exclusion Criteria:

  • Requires > two-level fusion or expected to need secondary intervention within one year following surgery.
  • Had prior PLF fusion or attempted PLF fusion at the involved levels.
  • Had previous decompression at the involved levels.
  • Women who are or intend to become pregnant within the next 12 months.
  • To treat conditions in which general bone grafting is not advisable.
  • In conditions where the surgical site may be subjected to excessive impact or stresses, including those beyond the load strength of fixation hardware (e.g. defect site stabilization is not possible).
  • In case of significant vascular impairment proximal to the graft site.
  • In case of severe metabolic or systemic bone disorders (e.g., osteogenesis imperfecta, history of or active Pott's disease, stage >4 renal disease or Paget's Disease) that affect bone or wound healing.
  • In case of acute and chronic infections in the operated area (soft tissue infections; inflammation, bacterial bone diseases; osteomyelitis).
  • When intraoperative soft tissue coverage is not planned or possible.
  • Receiving treatment with medication interfering with calcium metabolism.
  • Has degenerative disc disease (DDD) related to a benign or malignant tumor.
  • Has history or presence of active malignancy.
  • Has known substance abuse, psychiatric disorder, or a condition which, in the opinion of the investigator, may influence the healing or ability to comply with protocol requirements.
  • Is involved in active litigation relating to his/her spinal condition.
  • Has participated in an investigational study within 30 days prior to surgery for study devices.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: MagnetOs Easypack Putty

Interventions

  • Procedure: Instrumented posterolateral spine fusion
  • Device; MagnetOs Easypack Putty

MagnetOs Easypack Putty used standalone in instrumented posterolateral fusion, 5cc-15c per spine level at the randomized assigned side.

Aktiver Komparator: Demineralized Bone Matrix or Fibers (DBX or Grafton) mixed with local autograft bone

Interventions

  • Procedure: Instrumented posterolateral spine fusion
  • Device: Demineralized Bone Matrix or Fibers mixed with local autograft bone

Demineralized Bone Matrix or Fibers (DBX or Grafton) mixed in a 1:1 vol% with local autologous bone graft used in instrumented posterolateral fusion, 5cc-15cc per level mixed with bone marrow aspirate/blood per spine level at the contralateral side.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Radiographic Fusion by CT Scan
Zeitfenster: Month 12

The rate of posterolateral lumbar/thoracolumbar fusion assessed by CT-scan at Month 12. Radiographic as determined by evidence of bridging trabeculae or continuous bony connection between the superior and inferior transverse processes.

Month 12

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Radiographic Fusion by Plain Radiographs
Zeitfenster: Month 6, Month 12

The rate of posterolateral lumbar/thoracolumbar fusion assessed by plain radiographs.

Month 6, Month 12
Radiographic Fusion by CT Scan
Zeitfenster: Month 6

The rate of posterolateral lumbar/thoracolumbar fusion assessed by CT-scan at Month 6. Radiographic as determined by evidence of bridging trabeculae or continuous bony connection between the superior and inferior transverse processes.

Month 6
Functional Outcome by Oswestry Disability Index Questionnaire
Zeitfenster: Screening, Week 2, Month 3, 6, and 12

Functional outcome by the Oswestry Disability Index questionnaire. Patient-completed questionnaire which gives a subjective percentage score of level of function (disability) in activities of daily living in those rehabilitating from low back pain. The lower the percentage the higher the patient's functionality. 0-20% minimal disability, 80-100% significant disability or bedridden.

Screening, Week 2, Month 3, 6, and 12
Back and Leg Pain by Visual Analog Pain Scale Questionnaire
Zeitfenster: Screening, Week 2, Month 3, 6, and 12

Change in back and leg pain using Visual Analog Pain Scale (0-100). Patient-completed questionnaire scoring pain by using 100 mm line. Zero being no pain, 100 is worst pain imaginable.

Screening, Week 2, Month 3, 6, and 12
Neurologic Status by Physical Exam
Zeitfenster: Screening, Week 2, Month 3, 6, and 12

Change in neurologic status by examination to document stable, improved, or deficits in condition. Stable or improved findings for lower extremities, specifically reflexes, muscle strength, sensory, and straight leg raise.

Screening, Week 2, Month 3, 6, and 12
Success Rate
Zeitfenster: Week 2, Month 3, 6, and 12

Number of patients with secondary surgical interventions (SSI's) such as revisions, re-operations, removals, supplemental fixations, or any other procedure that adjusts or removes part of the original implant configuration with or without replacement of the components within 12 months of surgery.

Week 2, Month 3, 6, and 12

Andere Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Safety Endpoint - number of patients with Adverse Events
Zeitfenster: 12 Months

The number of patients with Adverse Events from Screening up to Month 12 after surgery.

12 Months
Safety Endpoint - number of patients with Serious Adverse Events
Zeitfenster: 12 Months

The number of patients with Serious Adverse Events from Screening up to Month 12 after surgery

12 Months
Safety Endpoint - number of patients with Adverse Device Effects
Zeitfenster: 12 Months

The number of patients with Adverse Device Effects from Screening up to Month 12 after surgery.

12 Months
Safety Endpoint - number of patients with Device Related Complications
Zeitfenster: 12 Months

The number of patients with any complications considered to device related with 12 months after surgery.

12 Months
Health Economic - Duration of Surgery
Zeitfenster: 12 Months

Duration of surgery in minutes.

12 Months
Health Economic - Duration of Hospitalization
Zeitfenster: 12 Months

Duration of hospital stay in days.

12 Months
Health Economic - Return to Work
Zeitfenster: 12 Months

Time to return to work in days.

12 Months

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Mitarbeiter

Ermittler

  • Studienleiter: Cesar Silva, MD, Kuros BioSciences B.V.

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

6. Dezember 2024

Primärer Abschluss (Geschätzt)

2. Dezember 2027

Studienabschluss (Geschätzt)

30. Dezember 2027

Studienanmeldedaten

Zuerst eingereicht

18. Dezember 2020

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

18. Dezember 2020

Zuerst gepostet (Tatsächlich)

22. Dezember 2020

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

4. November 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

3. November 2026

Zuletzt verifiziert

1. November 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • MAG-920-023

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Ja

Produkt, das in den USA hergestellt und aus den USA exportiert wird

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .