The aim of this study is to evaluate the effectiveness and safety of Natural Matrix Protein™ (NMP™) fibers when used in cervical or lumbar interbody fusion in patients with degenerative disc disease (DDD), spinal stenosis, spondylolisthesis undergoing cervical or lumbar interbody spine fusion at no more than 3 adjacent levels.
The study involves a retrospective review of patients' medical records and prospective collection of X-rays, and patient outcome questionnaires. The study population will include 100 consecutive lumbar interbody fusion and 100 consecutive cervical interbody fusion patients who meet the inclusion criteria and do not meet the exclusion criteria. There will be 4 prospective study visits following consent. Follow-up will occur in accordance with standard of care practice and will continue to 12 months post-surgery
Study Type
OBSERVATIONAL
Enrollment
200
human bone allograft
Procedure that involves removing the intervertebral disk from the disk space between between 2 or more vertebrae between L1 and S1. When the disk space has been cleared out, the surgeon fills the void between the vertebrae with a bone void filler.
Procedure that involves removing the intervertebral disk from the disk space between between 2 or more vertebrae between C2 and T1. When the disk space has been cleared out, the surgeon fills the void between the vertebrae with a bone void filler.
Alabama Back Institute
Jasper, Alabama, United States
Incidence of interbody fusion
Flexion and Extensions radiographs will be assessed for fusion at each level to be fused Fusion is defined as: (1) less than 5 degrees of motion by flexion extension X-ray and (2) no radiological features of non-union (radiolucency, implant migration, loss of graft height, supplemental fixation failure). Both fusion criteria have to be met to be considered a fusion success at the index level.
Time frame: Baseline to 12 months post-operative
Incidence of secondary surgical intervention
Secondary surgical interventions (SSI) include revision, re-operation, removal, or supplemental fixation at the index levels
Time frame: Baseline to 12 months post-operative
Incidence of Adverse Product Related Events
the incidence of the following will be reported: bone resorption with cage migration or subsidence, local inflammation with seromas, ectopic bone formation, radiculitis.
Time frame: Baseline to 12 months post-operative
Incidence of bridging bone
Plane radiographs will be evaluated for the presence of bridging bone at each level to be fused.
Time frame: Baseline to 12 months post-operative
Change in disability score for lumbar fusion patients assessed by Oswestry Disability Index
Disability will be assessed using the Oswestry Disability Index (ODI). ODI is a questionnaire to collect a patient's responses to questions about perceived function (disability) in 10 everyday activities in patients with acute or chronic low back pain. Each question consists of 6 statements about 1 activity which are scored from 0 to 5. With 0 indicating the least disability and 5 the greatest. The scores are combined to a single score from 0 (no disability) to 50 (completely disabled)
Time frame: Baseline to 12 months post-operative
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Change in disability score for cervical fusion patients assessed by Neck Disability Index
Disability will be assessed using the Neck Disability Index (NDI). NDI is a questionnaire to collect a patient's responses to questions about perceived function (disability) in 10 everyday activities in patients with acute or chronic neck pain. Each question consists of 6 statements about 1 activity which are scored from 0 to 5. With 0 indicating the least disability and 5 the greatest. The scores are combined to a single score from 0 (no disability) to 50 (completely disabled)
Time frame: Baseline to 12 months post-operative
Change in back pain in lumbar fusion patients
Pain will be assessed by Visual Analogue Scale (VAS) for back pain. VAS is a straight horizontal line of fixed length. The ends are defined as the extreme limits of the pain to be measured from the left (no pain) to the right (worst pain imaginable) and the patient marks on the line how much pain they are experiencing at that time. The VAS score is determined by measuring in millimeters from the end of the line to the point that the patient marks. The minimum score is 0 and the maximum score is 100. The larger the number the worse the pain being experienced
Time frame: Baseline to 12 months post-operative
Change in leg pain in lumbar fusion patients
Pain will be assessed by Visual Analogue Scale (VAS) for back pain. VAS is a straight horizontal line of fixed length. The ends are defined as the extreme limits of the pain to be measured from the left (no pain) to the right (worst pain imaginable) and the patient marks on the line how much pain they are experiencing at that time. The VAS score is determined by measuring in millimeters from the end of the line to the point that the patient marks. The minimum score is 0 and the maximum score is 100. The larger the number the worse the pain being experienced.
Time frame: Baseline to 12 months post-operative
Change in neck pain in cervical fusion patients
Pain will be assessed by Visual Analogue Scale (VAS) for back pain. VAS is a straight horizontal line of fixed length. The ends are defined as the extreme limits of the pain to be measured from the left (no pain) to the right (worst pain imaginable) and the patient marks on the line how much pain they are experiencing at that time. The VAS score is determined by measuring in millimeters from the end of the line to the point that the patient marks. The minimum score is 0 and the maximum score is 100. The larger the number the worse the pain being experienced.
Time frame: Baseline to 12 months post-operative
Change in arm pain in cervical fusion patients
Pain will be assessed by Visual Analogue Scale (VAS) for back pain. VAS is a straight horizontal line of fixed length. The ends are defined as the extreme limits of the pain to be measured from the left (no pain) to the right (worst pain imaginable) and the patient marks on the line how much pain they are experiencing at that time. The VAS score is determined by measuring in millimeters from the end of the line to the point that the patient marks. The minimum score is 0 and the maximum score is 100. The larger the number the worse the pain being experienced.
Time frame: Baseline to 12 months post-operative