Expired Study
This study is not currently recruiting Study Participants on ClinicalConnection.com. If you would like to find active studies please search for clinical trials.

Temple, Texas 76508


To compare radiographic data collection from patients undergoing instrumented PLF with CopiOs(R) BVF or instrumented PLF with autologous bone and to assess overall clinical outcomes. Patients will serve as self controls.

Study summary:

This is a prospective, counter-balanced study involving 85 subjects at up to 8 investigative centers. Each subject will be an appropriate candidate for an instrumented PLF and will meet the inclusion and exclusion criteria. All subjects will undergo an instrumented, pedicle screw PLF procedure. Autograft or other interbody devices identified by the surgeon to be in the best interest of the patient may be used. Enrolled patients will receive CopiOs BVF sponge soaked with bone marrow aspirate on one side and autologous bone on the other side. All patients will receive both CopiOs BVF and autologous bone. Patients will serve as self-controls in this counter-balanced study. Data will be collected pre-operatively, operatively and post-operatively at six and twelve months. The study objectives include: Radiographic success of CopiOs is non-inferior to autograft with clear evidence of bridging bone. Radiographic analysis will be used to show that CopiOs works as well as autograft when comparing the rate of fusion at 6 and 12 months. The CT scan (12 month) will show that CopiOs works as well as autograft when comparing the fusion mass between the transverse processes. Additionally, clinical success will be determined by an improvement of 15 percentage points using the Oswestry Disability Index and maintenance or improvement in the motor and sensory components of the neurological assessment from preoperative to postoperative. Since patients serve as self-controls there will be no clinical success comparisons between the groups. Rather, clinical success will be measured on overall improvement based on patient outcomes.


Inclusion Criteria: - Patient must be skeletally mature; between the ages of 21 and 75 - Patients having degenerative spondylolisthesis, stenosis with instability, or degenerative disc disease as diagnosed by radicular signs and/or imaging studies - Patients will be medically indicated for a single-level, instrumented PLF between L2 and S1 per their surgeon - Patient must be willing and able to comply with study requirements, including all necessary study related paperwork and follow-up visits Exclusion Criteria: - Use of iliac crest bone graft; - Any previous lumbar spinal surgeries at indicated level; - Any medical or physical condition that would preclude the potential benefit of spinal surgery; - Use of a dynamic stabilization systems; - Sites where stresses on void will exceed the load strength of fixation of hardware; - Segmental defects; - Significantly impaired vascularity proximal to the surgical site; - Sites in direct contact with articular space; - Soft tissue deficit not allowing closure; - Active systemic or local infection; - Severe degenerative bone disease; - Patients with osteoporosis who are actively under treatment; - Extreme obesity, as defined by NIH Clinical Guidelines Body Mass Index (BMI>40 kg/m2); - Active malignancy; - Patients with a history of multiple allergies; - Patients with known allergies to bovine collagen; - Hypercalcemia; - Pregnancy; - Mental illness; - Alcohol or drug abuse; - Incarceration.

Study is Available At:

Original ID:




Secondary ID:

Study Acronym:

Brief Title:

CopiOs Posterolateral Fusion Procedure

Official Title:

A Prospective Study Assessing Clinical Outcomes and Radiographic Results After the Use of CopiOs(R) Bone Void Filler (BVF)Sponge in a Posterolateral Fusion Procedure (PLF).

Overall Status:


Study Phase:

Phase 2



Minimum Age:

21 Years

Maximum Age:

85 Years

Quick Facts

Healthy Volunteers
Oversight Has DMC
Study Is FDA Regulated
Study Is Section 801
Has Expanded Access

Study Source:

Zimmer, Inc.

Oversight Authority:

United States: Institutional Review Board

Reasons Why Stopped:

Slow enrollment

Study Type:


Study Design:

Endpoint Classification: Bio-equivalence Study, In

Number of Arms:


Number of Groups:


Total Enrollment:


Enrollment Type:


Study Dates

Start Date:June 2010
Completion Date:October 2012
Completion Type:Actual
Primary Completion Date:October 2012
Primary Completion Type:Actual
Verification Date:January 2015
Last Changed Date:January 21, 2015
First Received Date:May 12, 2010

Study Outcomes

Outcome Type:Secondary Outcome
Measure:Outcome Measure - pain, life quality, satisfaction
Time Frame:PreOp, Surgery, 6M, 12M
Safety Issues:False
Outcome Type:Primary Outcome
Measure:Fusion Assessment
Time Frame:6 M, 12 M
Safety Issues:False
Description:Fusion at 12M using radiograph Fusion Mass at 12M using CT

Study Interventions

Intervention Type:Device
Description:Bone Void Filler

Study Arms

There are no available Study Arms

Study Agencies

Agency Class:Industry
Agency Type:Lead Sponsor
Agency Name:Zimmer, Inc.

Sample and Retention Information

There are no available Sample and Retention Information

Study References

There are no available Study References

Data Source: ClinicalTrials.gov

Date Processed: January 21, 2020

Modifications to this listing: Only selected fields are shown, please use the link below to view all information about this clinical trial.

This study is not currently recruiting Study Participants. The form below is not enabled.