The aim of this trial is to evaluate if P-15L bone graft (investigational device) is not inferior in effectiveness and safety to local autologous bone (and allograft where necessary) as an extender (control device) when applied in instrumented transforaminal lumbar interbody fusion (TLIF) in subjects with degenerative disc disease (DDD). In addition to the general overall objective, a sub-group analysis will be performed on the high-risk subject population (tobacco use, obesity, diabetes), as previous studies have shown negative effects of smoking, obesity and diabetes on fusion and bone healing, increased peri/postoperative complications, and lower patient-reported outcome scores.



Eligible Ages
Between 22 Years and 80 Years
Eligible Genders
Accepts Healthy Volunteers

Inclusion Criteria

(abbreviated): Skeletally mature adults between 22 and 80 years old (inclusive); Back pain with radicular symptoms as evidenced by leg pain, confirmed by history and physical exam; Oswestry Low Back Pain Disability Questionnaire score of ≥ 35; Involved disc(s) between L2 and S1;

Exclusion Criteria

(abbreviated): Significant metabolic disease that in the surgeon's opinion might compromise bone growth such as osteoporosis, osteopenia, or osteomalacia; Active malignancy; Nondiscogenic source of symptoms (e.g. tumor, etc.); Multiple level symptomatic degenerative disc disease where more than one level requires fusion; Previous spinal instrumentation or a previous interbody fusion procedure at the involved level; More than one level to be fused

Study Design

Study Type
Intervention Model
Parallel Assignment
Primary Purpose
Double (Participant, Outcomes Assessor)

Arm Groups

ArmDescriptionAssigned Intervention
P-15L Bone Graft
The investigational group will be treated with P-15L Bone Graft in an instrumented TLIF
  • Device: P-15L Bone Graft
    The investigational group will be treated with P-15L in an instrumented TLIF
Active Comparator
Local autologous bone
The active control group will be treated with local autologous bone in an instrumented TLIF
  • Other: Local autologous bone in a TLIF with Instrumentation
    The active control group will be treated local autologous bone in an instrumented TLIF

Recruiting Locations

The University of Alabama at Birmingham
Birmingham, Alabama 35294
Sakthivel Rajan Rajaram Manoharan, MD

More Details

CeraPedics, Inc

Study Contact

Jennifer Dugan


Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.