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RecruitingNCT05238740Updated Aug 26, 2026

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

An interventional study of ViviGen® and rhBMP-2 in Spondylosis, Spondylolisthesis and Degenerative Disc Disease, sponsored by Lindenhofgruppe AG. Recruiting at 1 site in Switzerland. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-08-26.

Sponsored by Lindenhofgruppe AG · Not applicable, Interventional, and Other

Phase
Not applicable
Study type
Interventional
Enrollment
168
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study 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 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.

02

Conditions studied

  • Spondylosis
  • Spondylolisthesis
  • Degenerative Disc Disease

Keywords

  • ViviGen
  • Radiographic fusion rate
  • Anterior lumbar interbody fusion
  • Recombinant human bone morphogenetic protein-2
  • Spondylosis
  • Spondylolisthesis
  • Degenerative Disc Disease
  • Extreme lateral interbody fusion
03

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

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

Exclusion criteria

Exclusion criteria:

  • 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
  • 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
04

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
168 participants (estimated)

Study arms

  • Active comparator
    Intervention group 5-5.4 cc ViviGen®

    Biological: 5-5.4 cc ViviGen® The ALIF or XLIF fusion patients assigned to this group will receive 5-5.4 cc ViviGen®

    Other: ViviGen®

  • Active comparator
    Control group 4-6mg rhBMP-2

    Biological: 4-6mg rhBMP-2 The ALIF or XLIF fusion patients assigned to this group will receive 4-6mg rhBMP-2

    Other: rhBMP-2

Interventions

  • OtherViviGen®

    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.

  • OtherrhBMP-2

    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.

    Also known as: InductOS

05

What researchers measure

Primary outcomes

  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.

    Time frame: 6 or 12 months after intervention

Secondary outcomes

  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.

    Time frame: 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.

    Time frame: 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.

    Time frame: 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.

    Time frame: 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.

    Time frame: 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.

    Time frame: 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.

    Time frame: 14 days, 6 weeks, 6 months and 12 months after intervention

Other outcomes

  1. Healthcare-costs using hospitalisation length of stay (LOS), occurrence and therapy of side effects/ adverse events and necessary revision operations

    Healthcare-costs will be assessed by using hospitalisation length of stay (LOS), occurrence and therapy of side effects/ adverse events and necessary revision operations at 12 months after intervention.

    Time frame: 12 months after intervention

06

Study locations

1 of 1 sites recruiting
  • Orthopädie Sonnenhof
    Bern, 3006, Switzerland
    Recruiting
07

References and documents

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 ↗

Individual participant data

Plan to share: No

08

Registry details

Key details

Study ID
NCT05238740
Lead sponsor
Lindenhofgruppe AG
Responsible party
Sponsor
First posted
Feb 14, 2022
Start date
Oct 27, 2022
Primary completion
Dec 2032 (estimated)
Completion
Dec 2032 (estimated)
Last update
Aug 26, 2026

Study contacts

Diel Peter, Dr. med
Contact
peter.diel@sonnenhof.ch
+41 31 358 17 90
Katia Schiegg
Contact
Diel Peter, Dr. med.
principal investigator · Orthopädie Sonnenhof, Bern

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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