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SpondylosisNCT05238740

Comparison of Radiographic Fusion Rate and Clinical Outcome of ALIF and XLIF Performed With Either Recombinant Human Bone Morphogenetic Protein-2 or ViviGen®

A study testing ViviGen® and rhBMP-2 in people with Spondylosis and Spondylolisthesis, run by Lindenhofgruppe AG at 1 site in Switzerland.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The aim of this study is to prospectively investigate the potential for bony fusion of ViviGen® bone graft substitute in comparison to rhBMP-2 in monosegmental ALIF procedure L5/S1 and in monosegmental XLIF procedure L4/5 Read more about this study

Who is it for?
Ages 18 to 70 years
What is being tested?
ViviGen® and rhBMP-2
Could I receive a placebo?
No, everyone receives an active treatment
How many people
168 participants
Where
1 siteSwitzerland
Study dates
27 Oct 2022to Dec 2032
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients who have an indication for a monosegmental ALIF procedure on the L5/S1 segment or a monosegmental XLIF procedure on L4/5 (both ALIF and XLIF procedure with or without an additional pedicular stabilisation), e.g., treating conditions such as spondylosis, spondylolisthesis and degenerative disc disorders with back and/or leg pain
  • Patients must be 18 - 70 years of age
  • Patients must have understood and signed the study information and the informed consent form
  • Patients are willing and able to complete scheduled follow-up evaluations / questionnaires as described in the Informed Consent

Who cannot join

  • Patients under 18 years and over 70 years of age
  • Patients with tumour / spine trauma / known bone disease / Parkinson's disease and similar CNS disorders / diseases or injuries of the peripheral nerves
  • Other procedures or segment than mentioned in the inclusion citeriaAdditional planed spine surgeries after index surgery
  • Current smoking
  • Pregnant or breastfeeding patients (or patient planning a pregnancy within one year after surgery)
  • Insufficient language skills in German
Show all 9Show fewer
  • Inability to give informed consent
  • Refusal to participate in the study, unsigned study consent
  • Participation in another interventional study within the 30 days preceding and during the present study

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Diel Peter, Dr. med contact

+41 31 358 17 90

peter.diel@sonnenhof.ch

Katia Schiegg contact

Switzerland1 site, 1 recruiting
  • Orthopädie Sonnenhof

    Bern, 3006

    Peter Diel, Dr.med., +41 31 358 17 90, peter.diel@sonnenhof.ch

    Katia Schiegg

    Recruiting

Other trials in Switzerland

About this study

Official title: Comparison of Radiographic Fusion Rate and Clinical Outcome of Anterior Lumbar and Extreme Lateral Interbody Fusion Performed With Either Recombinant Human Bone Morphogenetic Protein-2 or ViviGen® Cellular Bone Matrix, a Prospective Randomised Assessor Blind, Monocentric Trial

The aim of this study is to prospectively investigate the potential for bony fusion of ViviGen® bone graft substitute in comparison to rhBMP-2 in monosegmental ALIF procedure L5/S1 and in monosegmental XLIF procedure L4/5

Read the detailed description

The investigator hypothesize that

  • The bony fusion rate on a 12-month CT scan (or earlier at 6-month CT scan) is less than 10% lower in the intervention group compared to the bony fusion rate in the control group

For patients included in the study, all follow-up is recorded, with regards to radiological and clinical outcome. Follow up will be evaluated after 14 days, 6 weeks, 6 and 12 months. Last follow up will be 1 year after surgery.

Being tested
ViviGen®, rhBMP-2
Keywords
ViviGen, Radiographic fusion rate, Anterior lumbar interbody fusion, Recombinant human bone morphogenetic protein-2, Spondylosis, Spondylolisthesis, Degenerative Disc Disease, Extreme lateral interbody fusion
Medical subject headings
Spondylosis, Spondylolisthesis, Intervertebral Disc Degeneration

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ViviGen®Other

    It will investigate the radiological and clinical outcome of ALIF procedure L5/S1 and XLIF L4/L5 procedure using two arms/ treatments, namely either ViviGen® Bone Matrix (intervention group) or rhBMP-2 (control group). ViviGen®/ rhBMP-2 ratio will be 1:1.

  • rhBMP-2Other

    Also called InductOS

    It will investigate the radiological and clinical outcome of ALIF procedure L5/S1 and XLIF L4/L5 procedure using two arms/ treatments, namely either ViviGen® Bone Matrix (intervention group) or rhBMP-2 (control group). ViviGen®/ rhBMP-2 ratio will be 1:1.

Study groups in NCT05238740
Study groupRoleWhat they receive
Intervention group 5-5.4 cc ViviGen®Active comparatorBiological: 5-5.4 cc ViviGen® The ALIF or XLIF fusion patients assigned to this group will receive 5-5.4 cc ViviGen®
Receives: Other: ViviGen®
Control group 4-6mg rhBMP-2Active comparatorBiological: 4-6mg rhBMP-2 The ALIF or XLIF fusion patients assigned to this group will receive 4-6mg rhBMP-2
Receives: Other: rhBMP-2

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Rate of interbody bony fusion in the treated patients confirmed at 12-month CT or earlier at 6-month CT using Brantigan, Steffee, Fraser (BSF)

    The rate of interbody bony fusion will be assessed by computed tomography and then by a radiologist 6 or 12 months after the intervention.

    Modified Brantigan, Steffee, Fraser (BSF) classification of interbody fusion success will be defined as follows:

    BSF-1: Radiographical pseudarthrosis is indicated by collapse of the construct, loss of disc height, vertebral slip, broken screws, displacement of the Synfix cage, or significant resorption of the bone graft, or lucency visible around the periphery of the graft or cage.

    BSF-2: Radiographical locked pseudarthrosis is indicated by lucency visible in the middle of the cages with solid bone growing into the cage from each vertebral endplate.

    BSF-3: Radiographical fusion: bone bridges at least half of the fusion area with at least the density originally achieved at surgery. Radiographical fusion through one cage (half of the fusion area) is considered to be mechanically solid fusion even if there is lucency on the opposite side.

    Measured: 6 or 12 months after intervention

Secondary outcomes (7)
  1. Back pain visual analogue scale

    The back pain visual analogue scale (VAS 1-10) will be assessed before intervention and at 6 weeks, 6 months and 12 months after intervention.

    Measured: before intervention and at 6 weeks, 6 months and 12 months after intervention

  2. Leg pain visual analogue scale

    The leg pain visual analogue scale (VAS 1-10) will be assessed before intervention and at 6 weeks, 6 months and 12 months after intervention.

    Measured: before intervention and at 6 weeks, 6 months and 12 months after intervention

  3. Quality of life using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score)

    Quality of life will be assessed by using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score) before intervention and at 6 weeks, 6 months and 12 months after intervention.

    Measured: before intervention and at 6 weeks, 6 months and 12 months after intervention

  4. Disability/ limitations in the activities of daily living using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score)

    Disability / limitations in the activities of daily living will be assessed by using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score) before intervention and at 6 weeks, 6 months and 12 months after intervention.

    Measured: before intervention and at 6 weeks, 6 months and 12 months after intervention

  5. Disability/ limitations at the workplace using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score)

    Disability / limitations at the workplace will be assessed by using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score) before intervention and at 6 weeks, 6 months and 12 months after intervention.

    Measured: before intervention and at 6 weeks, 6 months and 12 months after intervention

  6. Patient satisfaction using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score)

    Patient satisfaction will be assessed by using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score) at 6 weeks, 6 months and 12 months after intervention.

    Measured: 6 weeks, 6 months and 12 months after intervention

  7. Complication / side effects using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score)

    Complication / side effects will be assessed by using a simplified Spine Tango questionnaire and the Core Outcome Measures Index (COMI Score) at 14 days, 6 weeks, 6 months and 12 months after intervention.

    Measured: 14 days, 6 weeks, 6 months and 12 months after intervention

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted14 Feb 2022
  2. Study start27 Oct 2022
  3. Primary completionDec 2032 (estimated)
  4. Study completionDec 2032 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Other
Allocation
Randomised
Intervention model
Parallel groups
Model description
The study is a prospective randomized assessor blind monocentric trial. It aims for non-inferiority.
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
168 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05238740
Sponsor's protocol ID
2021-02219
Status last verified
Aug 2026
First submitted
7 Jan 2022
Last updated
26 Aug 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Arrington ED, Smith WJ, Chambers HG, Bucknell AL, Davino NA. Complications of iliac crest bone graft harvesting. Clin Orthop Relat Res. 1996 Aug;(329):300-9. doi: 10.1097/00003086-199608000-00037.

    PubMed 8769465
  • Birmingham E, Niebur GL, McHugh PE, Shaw G, Barry FP, McNamara LM. Osteogenic differentiation of mesenchymal stem cells is regulated by osteocyte and osteoblast cells in a simplified bone niche. Eur Cell Mater. 2012 Jan 12;23:13-27. doi: 10.22203/ecm.v023a02.

    PubMed 22241610
  • Johnstone B, Zhang N, Waldorff EI, Semler E, Dasgupta A, Betsch M, Punsalan P, Cho H, Ryaby JT, Yoo J. A Comparative Evaluation of Commercially Available Cell-Based Allografts in a Rat Spinal Fusion Model. Int J Spine Surg. 2020 Apr 30;14(2):213-221. doi: 10.14444/7026. eCollection 2020 Apr.

    PubMed 32355628
  • Kadam A, Millhouse PW, Kepler CK, Radcliff KE, Fehlings MG, Janssen ME, Sasso RC, Benedict JJ, Vaccaro AR. Bone substitutes and expanders in Spine Surgery: A review of their fusion efficacies. Int J Spine Surg. 2016 Sep 22;10:33. doi: 10.14444/3033. eCollection 2016.

    PubMed 27909654
  • Manzur M, Virk SS, Jivanelli B, Vaishnav AS, McAnany SJ, Albert TJ, Iyer S, Gang CH, Qureshi S. The rate of fusion for stand-alone anterior lumbar interbody fusion: a systematic review. Spine J. 2019 Jul;19(7):1294-1301. doi: 10.1016/j.spinee.2019.03.001. Epub 2019 Mar 11.

    PubMed 30872148
  • Singh K, Ahmadinia K, Park DK, Nandyala SV, Marquez-Lara A, Patel AA, Fineberg SJ. Complications of spinal fusion with utilization of bone morphogenetic protein: a systematic review of the literature. Spine (Phila Pa 1976). 2014 Jan 1;39(1):91-101. doi: 10.1097/BRS.0000000000000004.

    PubMed 24026158
  • Wetzell B, McLean JB, Moore MA, Kondragunta V, Dorsch K. A large database study of hospitalization charges and follow-up re-admissions in US lumbar fusion surgeries using a cellular bone allograft (CBA) versus recombinant human bone morphogenetic protein-2 (rhBMP-2). J Orthop Surg Res. 2020 Nov 19;15(1):544. doi: 10.1186/s13018-020-02078-7.

    PubMed 33213484

Questions about this trial

What is this clinical trial studying?

A study testing ViviGen® and rhBMP-2 in people with Spondylosis and Spondylolisthesis, run by Lindenhofgruppe AG at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 26 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Diel Peter, Dr. med (+41 31 358 17 90, peter.diel@sonnenhof.ch), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Rate of interbody bony fusion in the treated patients confirmed at 12-month CT or earlier at 6-month CT using Brantigan, Steffee, Fraser (BSF) (time frame: 6 or 12 months after intervention). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05238740, which also lists 7 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Aug 2026.

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