A Pivotal Study of rhBMP-2/ACS/LT-CAGE® Device for Anterior Lumbar Interbody Fusion in Patients With Degenerative Disc Disease

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01491425
Recruitment Status : Completed
First Posted : December 14, 2011
Last Update Posted : August 2, 2013
Information provided by (Responsible Party):
Medtronic Spinal and Biologics

December 12, 2011
December 14, 2011
August 2, 2013
November 1998
October 2002   (Final data collection date for primary outcome measure)
Overall Success [ Time Frame: 24 month ]

A patient will be considered an overall success if all of the following conditions are met:

  1. fusion;
  2. pain/disability (Oswestry) improvement;
  3. maintenance or improvement in neurological status;
  4. no serious adverse event classified as implant associated or implant/surgical procedure associated;
  5. no additional surgical procedure classified as a "failure."
Same as current
Complete list of historical versions of study NCT01491425 on Archive Site
  • Disc Height Measurement [ Time Frame: 24 month ]
  • General Health Status (SF-36) [ Time Frame: 24 month ]
  • Pain Status (Numerical Rating Scale) [ Time Frame: 24 month ]
  • Patient Satisfaction [ Time Frame: 24 month ]
  • Patient Global Perceived Effect [ Time Frame: 24 month ]
Same as current
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A Pivotal Study of rhBMP-2/ACS/LT-CAGE® Device for Anterior Lumbar Interbody Fusion in Patients With Degenerative Disc Disease
A Clinical Investigation of Recombinant Human Bone Morphogenetic Protein-2 and Absorbable Collagen Sponge With the LT-CAGE® Device for Anterior Lumbar Interbody Fusion in Patients With Symptomatic Degenerative Disc Disease
This study is designed to assess the safety and effectiveness of the rhBMP-2/ACS/LT-CAGE® Device using laparoscopic surgical technique as compared to an historical control group treated with Autogenous Bone/LT-CAGE® Device using an open surgical technique in patients with symptomatic degenerative disc disease.
Not Provided
Not Applicable
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Degenerative Disc Disease
  • Device: rhBMP-2/ACS//LT-CAGE® Device
    LT-CAGE® device with recombinant human bone morphogenetic protein-2 ( rhBMP-2) and the absorbable collagen sponge (ACS).
    Other Name: Recombinant human bone morphogenetic protein-2
  • Device: Autogenous Bone//LT-CAGE® Device
    LT-CAGE® device with autogenous bone taken from the iliac crest.
    Other Name: Autograft
  • Experimental: rhBMP-2/ACS
    Intervention: Device: rhBMP-2/ACS//LT-CAGE® Device
  • Active Comparator: Autogenous Bone
    The control group of patients from another study (Protocol ID: C-9702 Pivotal Study of rhBMP-2/ACS/LT-CAGE® Device for Anterior Lumbar Interbody Fusion in Patients With Symptomatic DDD).
    Intervention: Device: Autogenous Bone//LT-CAGE® Device
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Same as current
October 2002
October 2002   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  1. Has degenerative disc disease as noted by back pain of discogenic origin, with or without leg pain, with degeneration of the disc confirmed by patient history ( e.g.,pain [leg, back, or symptoms in the sciatic nerve distribution], function deficit and/or neurological deficit)and radiographic studies ( e.g., CT, MRl, X-Ray, etc.) to include one or more of the following:

    • instability( defined as angular motion > 5° and/or translation >= 2-4mm, based on Flex/Ext radiographs);
    • osteophyte formation;
    • decreased disc height;
    • thickening of ligamentous tissue;
    • disc degeneration or herniation; and/or
    • facet joint degeneration.
  2. Has preoperative Oswestry score > 35.
  3. Has no greater than Grade 1 spondylolisthesis utilizing Meyerding's Classification (Meyerding HW, 1932.).
  4. Has single-level symptomatic degenerative involvement from L4 to S1.
  5. Is at least 18 years of age, inclusive, at the time of surgery.
  6. Has not responded to non-operative treatment (e.g., bed rest, physical therapy, medications, spinal injections, manipulation, and/or TENS) for a period of at least 6 months.
  7. If female of child-bearing potential, who is not pregnant or nursing, and who agrees to use adequate contraception for 16 weeks following surgery.
  8. Is willing and able to comply with the study plan and sign the Patient Informed Consent Form.

Exclusion Criteria:

  1. Had previous anterior spinal fusion surgical procedure at the involved level.
  2. Has posterior spinal instrumentation (which will not be removed) stabilizing the involved level or has had a previous posterior lumbar interbody fusion procedure at the involved level.
  3. Has a condition which requires postoperative medications that interfere with fusion, such as steroids.
  4. Has been previously diagnosed with osteopenia, osteoporosis, or osteomalacia to a degree that spinal instrumentation would be contraindicated.
  5. Has presence of active malignancy.
  6. Has overt or active bacterial infection, either local or systemic.
  7. Is grossly obese, i.e., weight > 40% over ideal for their age and height.
  8. Has fever ( temperature > 101° F oral) at the time of surgery.
  9. Has a documented titanium alloy allergy or intolerance.
  10. Is mentally incompetent. if questionable, obtain psychiatric consult.
  11. Has a Waddell Signs of Inorganic Behavior score of 3 or greater.
  12. Is a prisoner.
  13. Is an alcohol and/or drug abuser as defined by currently undergoing treatment for alcohol and/or drug usage.
  14. Is a tobacco user at the time of surgery.
  15. Has received drugs which may interfere with bone metabolism within two weeks prior to the planned date of spinal fusion surgery (e.g., steroids or methotrexate).
  16. Has a history of autoimmune disease (Systemic Lupus Erythematosus or Dermatomyositis).
  17. Has a history of exposure to injectable collagen implants.
  18. Has a history of hypersensitivity to protein pharmaceuticals (monoclonal antibodies or gamma globulins) or collagen.
  19. Has received treatment with an investigational therapy within 28 days prior to implantation surgery or such treatment is planned during the 16 weeks following rhBMP-2/ACS implantation.
  20. Has received any previous exposure to any/all BMP's of either human or animal extraction.
  21. Has a history of allergy to bovine products or a history of anaphylaxis.
  22. Has history of endocrine or metabolic disorder known to affect osteogenesis (e.g., Paget's disease, renal osteodystrophy, Ehlers- Danlos syndrome, or osteogenesis imperfecta).
Sexes Eligible for Study: All
18 Years and older   (Adult, Older Adult)
Contact information is only displayed when the study is recruiting subjects
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Medtronic Spinal and Biologics
Medtronic Spinal and Biologics
Not Provided
Not Provided
Medtronic Spinal and Biologics
December 2011

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP