RAMP Study: A Study Comparing Two Lumbar Fusion Procedures

This study is currently recruiting participants.
Verified January 2014 by Baxano Surgical, Inc.
Information provided by (Responsible Party):
Baxano Surgical, Inc.
ClinicalTrials.gov Identifier:
First received: October 24, 2012
Last updated: January 21, 2014
Last verified: January 2014

This is a post-marketing, on-label Efficacy, Effectiveness and Safety Study designed in a Multicenter, Randomized, Prospective format. This study compares two spinal fusion procedures, Transacral Interbody Fusion and Transforaminal Lumbar Interbody Fusion (TLIF). Enrollment period will be approximately 12-18 months; each Principal Investigator/Study Center will be expected to enroll up to 20 subjects. The protocol requires approximately 7 subject visits to the study center from screening through the final follow-up visit.

Spinal Stenosis
Degenerative Disc Disease

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: RAMP Study: A Prospective Randomized Study Comparing Two Lumbar Fusion Procedures

Resource links provided by NLM:

Further study details as provided by Baxano Surgical, Inc.:

Estimated Enrollment: 200
Study Start Date: June 2012
transacral lumbar interbody fusion procedure
transforaminal lumbar interbody fusion procedure (TLIF)

Detailed Description:

Study Treatment Arms:

The transacral lumbar interbody fusion (including 1L+ and 2L+) is a minimally invasive technique that uses a transacral approach to achieve fusion at the L5-S1 or L4-L5-S1 spinal levels. The transforaminal lumbar interbody fusion (TLIF) is performed by using a posterior unilateral or bilateral incision in which the lumbar spine is accessed. Both study procedures are approved for use and conform to US regulatory requirements. The study employs these procedures and devices for uses that are consistent with their 510(k), legally cleared, labeling.

Study Design, Objective:

The study objective is to demonstrate non-inferiority between the transacral lumbar interbody fusion procedure and the transforaminal lumbar interbody fusion procedure (TLIF) by meeting the primary and secondary study endpoints as listed below.

Study design, Endpoints:

Primary Endpoint:

Efficacy: Fusion of the targeted vertebral bodies (L4-L5 or L5-S1) by 24 months as determined by Central Radiographic Reviewer's interpretation of high resolution Computed Tomography (CT) scan.

Secondary Endpoints:

Safety: Incidence of major device-related adverse events and/or failures by 24 months, defined as those requiring revision surgery or a secondary operation, or events resulting in permanent disability or death.

Clinical Effectiveness: A 20% decrease in back pain compared to baseline by 24 months as measured by the Visual Analog Scale (VAS) score.

Clinical Effectiveness: A 20% decrease in disability compared to baseline by 24 months as measured by the Oswestry Disability Index (ODI).

Study Design, Enrollment and Analyses:

Approximately 200 subjects will be enrolled in this study and will receive one of two study treatments in the study. The enrollment period is expected to last approximately 18 months, with a 24 month follow up period. Approximately 15-20 sites will participate, and Investigators must be proficient in both of the lumbar fusion procedures.


Eight evaluations: Pre-Operative, Operative, Discharge, and at 1, 3, 6, 12, and 24 Months.

Safety and efficacy analyses will be performed at all follow-up points during the study as well as a final analysis when all subjects have completed the study.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population

To be eligible to participate in this study, the subject must meet all of the inclusion criteria and none of the exclusion criteria.


Inclusion Criteria:

  • Male or female subject that is eligible for both study procedures only at the L4-L5-S1 or L5-S1 levels with bilateral pedicle screws;
  • The subject has a diagnosis of one or more of the following conditions at the L4-L5-S1 or L5-S1 levels:

    • Spinal stenosis;
    • Spondylolisthesis;
    • Degenerative Disc Disease (DDD) defined as back pain and/or radicular pain with degeneration of the disc as confirmed by history, physical examination and radiographic studies, either by CT, MRI, plain film, myelography, or discography;
  • Adult 18 years of age or older;
  • The subject has undergone at least 6 consecutive months of Conservative Care Therapy(ies);
  • The subject is able and willing to give written informed consent and to comply with the requirements of this study protocol.

Exclusion Criteria:

  • Coagulopathy;
  • Bowel disease (e.g. Crohn's, ulcerative colitis);
  • Severe scoliosis (curves > 60°);
  • Sacral agenesis;
  • Spondylolisthesis greater than Grade 1 at the L4-L5-S1 levels, or greater than Grade 2 at the L5-S1 level;
  • Spinal tumor (or history of sacral tumor);
  • History of fracture at L4, L5 and/or S1 vertebral bodies;
  • The subject has undergone a prior fusion procedure of the lumbar spine;
  • Osteoporosis; or, if the subject is at high risk for development of osteoporosis, further screening to be conducted at Investigator's discretion;
  • Per the Investigator, body weight is exclusionary only if concomitant medical issues are present that preclude the subject from being a candidate for spinal surgery; The subject is a current cigarette smoker;
  • For women of childbearing potential, pregnancy at the time of enrollment, or planning to become pregnant during the course of the study;
  • The subject has a history of substance abuse (illegal drugs, prescription drugs, or alcohol) that, in the Investigator's opinion, may interfere with protocol assessments and/or the subject's ability to comply with the protocol;
  • Per the Investigator, the subject is in poor general health or undergoing any concurrent disease process that would place the subject in excessive risk to surgery (e.g. significant circulatory problems, cardiac disease, history of bowel surgery);
  • The subject is participating in another spine study, which, in the opinion of the Investigator, could skew results;
  • The subject is involved in litigation related to their back condition;
  • The subject is contraindicated to receive either study procedure;
  • The subject is contraindicated to receive bilateral pedicle screws;
  • The subject has a history of allergy to any component of the devices or biologic material to be implanted in either procedure;
  • The subject is a prisoner, transient, or an illegal alien.
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT01716182

Contact: Rebecca Gibson 1.877.493.1570 rebecca.gibson@baxsurg.com

United States, California
St. Joseph Heritage Healthcare Recruiting
Fullerton, California, United States, 92835
Principal Investigator: Raed M Ali, MD         
Cedars-Sinai Medical Center Recruiting
Los Angeles, California, United States, 90048
Contact: Cece Bruce    310-423-9209    brucece@cshs.org   
Principal Investigator: Neel Anand, MD         
Sub-Investigator: Eli Baron, MD         
United States, Indiana
Indiana Spine Group Recruiting
Carmel, Indiana, United States, 46032
Contact: Sheetal Vinayek, M.Sc, CCRP    317-715-5897    svinayek@indianaspinegroup.com   
Principal Investigator: Rick Sasso, MD         
Sub-Investigator: Paul Kraemer, MD         
Sub-Investigator: Justin Miller, MD         
Sub-Investigator: Tom Reilly, MD         
Sub-Investigator: Kenneth Renkens, MD         
United States, Louisiana
Bone and Joint Clinic of Baton Rouge Recruiting
Baton Rouge, Louisiana, United States, 70808
Contact: Adaire O'Brien    225-766-0050 ext 5096    aobrien@bjcbr.com   
Contact: Pamela Mitcham, Ph.D.    225-766-0050 ext 5096      
Principal Investigator: Kevin McCarthy, MD         
LSU Health Sciences Center, Department of Neurosurgery Recruiting
New Orleans, Louisiana, United States, 70112
Contact: Robyn Givens, PA-C       rgiven@lsuhsc.edu   
Principal Investigator: Gabriel Tender, MD         
United States, Massachusetts
UMass Medical Center, Department of Neurosurgery Recruiting
Worcester, Massachusetts, United States, 01655
Contact: Andrea Demers    508-334-3039    Andrea.Demers@umassmemorial.org   
Principal Investigator: Frederick Pennings, MD         
Sub-Investigator: John Weaver, MD         
United States, North Carolina
Cary Orthopaedic Spine Specialists Recruiting
Cary, North Carolina, United States, 27518
Contact: Solomon Chelli, MD    919-297-0000    solochelli@gmail.com   
Principal Investigator: Sameer Mathur, MD         
United States, Ohio
Mayfield Clinic/University of Cincinnati Recruiting
Cincinnati, Ohio, United States, 45219
Contact: Ian Jansen    513-558-3546    jansenih@UCMAIL.UC.EDU   
Principal Investigator: William Tobler, MD         
University Hospitals Case Medical Center Recruiting
Cleveland, Ohio, United States, 44106
Contact: Valerie Cwiklinski    216-983-5144    Valerie.Cwiklinski1@UHhospitals.org   
Principal Investigator: David Hart, MD         
United States, Texas
Brazos Spine Recruiting
College Station, Texas, United States, 77845
Contact: Jo Anna Richards    979-693-1815      
Principal Investigator: Mukund Gundanna, MD         
United States, Virginia
Danville Orthopedic Clinic, Inc. Recruiting
Danville, Virginia, United States, 24541
Contact: Susan Shelton    434-793-4711 ext 346    susan.shelton@danvilleortho.com   
Contact: April Marshall    (434)793-4711 ext 349    marshalla@danvilleortho.com   
Principal Investigator: Leon Abram, MD         
Sponsors and Collaborators
Baxano Surgical, Inc.
Principal Investigator: David Hart, MD University Hospital Case Medical Center
  More Information

No publications provided

Responsible Party: Baxano Surgical, Inc.
ClinicalTrials.gov Identifier: NCT01716182     History of Changes
Other Study ID Numbers: PR-0018
Study First Received: October 24, 2012
Last Updated: January 21, 2014
Health Authority: United States: Food and Drug Administration
United States: Federal Government
United States: Western Institutional Review Board

Additional relevant MeSH terms:
Spinal Stenosis
Intervertebral Disk Degeneration
Spinal Diseases
Bone Diseases
Musculoskeletal Diseases

ClinicalTrials.gov processed this record on April 23, 2014