MAVERICK™ Total Disc Replacement- Pivotal Study

Spinal Diseases Clinical Trial

Official title:

"A Prospective, Randomized Controlled Clinical Investigation of MAVERICK™ Total Disc Replacement in Patients With Degenerative Disc Disease"

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00635843
• Other study ID #: P01-08
• Status: Completed
• Phase: Phase 3
• First received: March 7, 2008
• Last updated: August 1, 2013
• Start date: April 2003
• Est. completion date: November 2010

Study information

• Verified date: October 2011
• Source: Medtronic Spinal and Biologics
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Food and Drug Administration
• Study type: Interventional

Clinical Trial Summary

The purpose of this clinical trial is to assess the safety and effectiveness of the MAVERICK™ Total Disc Replacement as a method of treating patients with lumbar degenerative disc disease at one level from L4-S1, with overall success being the primary endpoint of the clinical trial. The primary objective is to show non-inferiority of the investigational device to the control treatment. If non-inferiority is established, superiority will be examined.

Description:

For this clinical trial, there are two treatment groups, i.e., investigational patients who receive the MAVERICK™ Total Disc Replacement and control patients who receive the anterior lumbar interbody fusion procedure with INFUSE® Bone Graft/LT-CAGE® Lumbar Tapered Fusion Device. Each investigational site will enroll patients in a 2:1 investigational:control treatment randomization scheme.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 577
• Est. completion date: November 2010
• Est. primary completion date: October 2006
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years to 70 Years

Eligibility

Inclusion Criteria:

• Has DDD as noted by back pain of discogenic origin, with or without leg pain, with degeneration of the disc confirmed by patient history

• Has 1 or more of the following documented by CT, MRI, or plain x-rays: modic changes, high intensity zones in the annulus, loss of disc height, decreased hydration of the disc

• Has documented annular pathology

• Has single-level symptomatic degenerative involvement from L4-S1 requiring surgical treatment

• Has intact facet joints at the involved vertebral levels documented by CT and/or MRI

• Has preop Oswestry score=30

• Has preop back pain score =20

• Age 18 to 70 yrs who are skeletally, mature, inclusive

• Has not responded to non-operative treatment for 6 mos

• If child-bearing potential, patient is non-pregnant, non-nursing, and agrees not to become pregnant for 1 yr after surgery

• Is willing and able to comply with the study plan and sign the Patient Informed Consent Form

Exclusion Criteria:

• Has primary diagnosis of a spinal disorder other than DDD at involved level

• Had previous posterior lumbar spinal fusion surgical procedure at involved level

• Had prior posterior lumbar surgery resulting in significant muscle/ligament morbidity, not including facet saving techniques

• Had previous anterior lumbar spinal surgery at involved level

• Requires spinal fusion and/or arthroplasty at more than 1 lumbar level

• Has severe pathology of facet joints of involved vertebral bodies

• Has any posterior element insufficiency

• Has spondylolisthesis

• Has spinal canal stenosis

• Has rotatory scoliosis at involved level

• Level treated has fractures secondary to trauma

• Has any of the following that may be associated with a diagnosis of osteoporosis (if Yes, a DEXA Scan is required): Postmenopausal Non-Black female over 60 yrs of age and weighs less than 140 pounds; Postmenopausal female that has sustained a non-traumatic hip, spine or wrist fracture; Male over the age of 60 that has sustained a non-traumatic hip or spine fracture. If level of BMD is -3.5 or lower or -2.5 or lower with vertebral crush fracture, the patient is excluded

• Has fever (temp > 101°F oral) at time of surgery

• Has a condition that requires postop medications that interfere with fusion, such as steroids or prolonged use of non-steroidal anti-inflammatory drugs, excluding routine perioperative, non-steroidal anti-inflammatory drugs. Does not include low dose aspirin for prophylactic anticoagulation

• Has overt or active bacterial infection, either local or systemic and/or potential for bacteremia

• Has presence or prior history of malignancy (except for basal cell carcinoma of skin)

• Has documented metal allergy, titanium alloy intolerance or cobalt-chrome-molybdenum alloy

• Is mentally incompetent. If questionable, obtain psych consult

• Has a Waddell Signs of Inorganic Behavior score of 3 or greater

• Has chronic or acute renal and/or hepatic failure or prior history of renal and/or hepatic parenchymal disease

• Is prisoner

• Is pregnant

• Is an alcohol and/or drug abuser as defined by currently undergoing treatment for alcohol and/or drug abuse

• Has received drugs that may interfere with bone metabolism within 2 weeks prior to the surgery date, excluding routine perioperative, non-steroidal anti-inflammatory drugs

• Has history of autoimmune disease

• Has history of exposure to injectable collagen implants

• Has history of hypersensitivity to protein pharmaceuticals (monoclonal antibodies or gamma globulins) or collagen

• Has received treatment with an investigational therapy within 30 days prior to implantation surgery or treatment is planned during 24 months following the implantation surgery

• Has received any previous exposure to any/all BMP's of either human or animal extraction

• Has history of allergy to bovine products or a history of anaphylaxis

• Has history of any endocrine or metabolic disorder known to affect osteogenesis

• Has any disease that would preclude accurate clinical evaluation

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Intervertebral Disc Degeneration
• Spinal Diseases

Intervention

Device:
• MAVERICK™ Disc
The MAVERICK™ disc is a spinal arthroplasty system and is intended to replace a damaged disc in the lumbar spine. It is a permanent implant used to maintain motion at the treated level and is inserted using an anterior surgical approach.
• LT-CAGE® Lumbar Tapered Fusion Device and INFUSE® Bone Graft
The control is the treatment with LT-CAGE® Lumbar Tapered Fusion Device and INFUSE® Bone Graft. It is commercially available for anterior lumbar spine interbody fusion procedures.

Locations

Country	Name	City	State
United States	Spine Carolina	Asheville	North Carolina
United States	Central Texas Spine	Austin	Texas
United States	New Hampshire Spine Institute	Bedford	New Hampshire
United States	Boulder Neurosurgical Associates	Boulder	Colorado
United States	Orthopedic Center of St. Louis	Chesterfield	Missouri
United States	Northwestern Orthopedic Institute	Chicago	Illinois
United States	Hughston Clinic	Columbus	Georgia
United States	The Center for Spine Care	Dallas	Texas
United States	Spine Care Medical Group	Daly City	California
United States	Advanced Neurosurgical Center	El Paso	Texas
United States	Fort Wayne Orthopaedics	Fort Wayne	Indiana
United States	The Spine Center at TOC	Huntsville	Alabama
United States	Orthopedics of Indianapolis	Indianapolis	Indiana
United States	Little Company of Mary Hospital	Los Angeles	California
United States	Rocky Mountain Associates in Orthopaedic Medicine	Loveland	Colorado
United States	University of Wisconsin Orthopedic Department	Madison	Wisconsin
United States	The B.A.C.K. Center	Melbourne	Florida
United States	Spine Institute of Idaho	Meridian	Idaho
United States	Institute for Low Back & Neck Care	Minneapolis	Minnesota
United States	Illinois Bone and Joint Institute	Morton Grove	Illinois
United States	Southeastern Spine Institute	Mt. Pleasant	South Carolina
United States	Hospital for Special Surgery	New York	New York
United States	First State Orthopaedics, P.A.	Newark	Delaware
United States	Newport Orthopedic Institute	Newport Beach	California
United States	Oklahoma Sports Science & Ortho	Oklahoma City	Oklahoma
United States	Nebraska Spine Center, LLC	Omaha	Nebraska
United States	Orthopaedic Specialty Institute	Orange	California
United States	Virginia Spine Institute	Reston	Virginia
United States	Neurosurgical Associates, PC	Richmond	Virginia
United States	Inland Neurosurgery and Spine Associates, PS	Spokane	Washington
United States	Orthopaedic & Sports Medicine Center	Trumbull	Connecticut
United States	Walter Reed Army Medical Center	Washington	District of Columbia

Sponsors (1)

Lead Sponsor	Collaborator
Medtronic Spinal and Biologics

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Overall Success	A patient will be considered an overall success if all of the following conditions are met: pain/disability(Oswestry)success; neurological status success; disc height success; no serious adverse event classified as "implant associated" or "implant/surgical procedure associated"; no additional surgical procedure classified as a "failure".	24 Months	Yes
Secondary	Pain/Disability Status	The self-administered Oswestry Low Back pain Disability Questionnaire will be used. Success will be defined as pain/disability improvement postoperatively according to the following definition: Preoperative Score - Postoperative Score >= 15	24 Months	No
Secondary	Neurological Status	Neurological status will be evaluated preoperatively and postoperatively. Neurological status is based on four types of measurements (sections): motor, sensory, reflexes, and straight leg raise. Each of the categories is comprised of a number of elements. Postoperative evaluations on each element on the Neurological status case report form will be compared to the preoperative evaluations. Success will be defined as maintenance or improvement in each element for the time period evaluated.	24 months	Yes
Secondary	Disc Height Measurement	Disc height will be measured postoperatively at each visit and compared to the measurement at 6 weeks postoperatively. Disc height success is based on either the anterior or posterior measurements meeting the following criterion: Postoperative Disc Height- 6 Week Postoperative Disc Height >= -2mm	24 months	No
Secondary	General Health Status	The Medical Outcomes Study 36-item Short Form Health Survey (SF-36) will be used to assess general health status. The SF-36 results can be summarized into two components, a physical component summary (PCS) and a mental component summary (MCS). Success will be defined as a maintenance or improvement in status postoperatively as compared to the preoperative condition. To be classified as a success, the following criteria must be met: PCSPostop - PCSPreop >= 0; MCSPostop - MCSPreop >= 0	24 months	No
Secondary	Back Pain	Numerical rating scales will be used to evaluate pain intensity and duration. The pain score (0 min, 20 Max) is derived by adding the numerical rating scores from the pain intensity (0-10, with a score of 0 representing "no pain" and a score of 10 representing "pain as bad as it could be.") and duration scales (0-10, with a score of 0 being "pain none of the time" and a score of 10 being "pain all of the time"). Success for back and leg pain is described as follows: Preoperative Score - Postoperative Score >0	24 months	No
Secondary	Leg Pain	Numerical rating scales will be used to evaluate pain intensity and duration. The pain score (0 min, 20 Max) is derived by adding the numerical rating scores from the pain intensity (0-10, with a score of 0 representing "no pain" and a score of 10 representing "pain as bad as it could be.") and duration scales (0-10, with a score of 0 being "pain none of the time" and a score of 10 being "pain all of the time"). Success for back and leg pain is described as follows: Preoperative Score - Postoperative Score >0	24 months	No
Secondary	Patient Satisfaction		24 months	No
Secondary	Patient Global Perceived Effect		24 months	No
Secondary	Operative Time		At the time of operation	No
Secondary	Blood Loss		At the time of operation	No
Secondary	Number of Hospital Days		At the time of discharge	No