The Effect of Lordosis on Clinical Outcome After Spinal Fusion for One-level Degenerative Spondylolysthesis...
Spondylolisthesis DegenerativeSpinal FusionDegenerative spondylolisthesis is a common spinal degenerative disease. It is defined as the slippage of one vertebrae on the vertebrae bellow. In the process of spinal ageing and spinal joint degeneration, the spine becomes subjected to degenerative development that results in joint instability, shifting of vertebrae and can be responsible for a progressive kyphosis of the lumbar spine and sagittal imbalance with forward inclination of the trunk and chronic low back pain development. To address these changes and restore stability, lumbar spinal fusion has been developed and is nowadays a common procedure for unstable degenerative spine disorders. In the past several years, studies that highlight the importance of sagittal balance analysis with the restoration of adequate lumbar lordosis, have emerged. However, it remains a challenge to determine the correct amount of lumbar lordosis that is required for each patient to maintain optimal post-fusion sagittal balance. Additionally, the relationship between pelvic incidence (PI) and impact of LL correction has been highlighted in literature. The position of fused vertebrae is of paramount importance, as sagittal alignment should be done with minimizing muscle work during posture. Failure to reach proper sagittal balance can result in compensatory mechanisms such as increased pelvic tilt (PT), cervical and thoracic segment hyperextension, and knee flexion. These compensatory mechanisms have adverse effects such as chronic pain, disability and muscle fatigue. With this study the investigators aim to analyze long-term clinical and spinopelvic radiographic parameter outcomes of patients who underwent a one-level spinal fusion procedure for single level degenerative spondylolisthesis disease at a single institution.
Study of OP-1 Putty in Uninstrumented Posterolateral Fusions
Degenerative Lumbar SpondylolisthesisThis study is to provide additional data to support the safety and efficacy of OP-1 Putty as a replacement for autograft in patients undergoing posterolateral spinal fusion.
Retrospective Image Analysis of Degenerative Lumbar Disease Patients
Lumbar SpondylolisthesisThe Dynesys dynamic stabilization (DDS) system is considered a motion-preserving device. However, studies addressing the change in the range of motion (ROM) are limited. Therefore, this study aimed to investigate the factors influencing ROM change at the index surgical level, supra-index level, and whole lumbar spine, in addition to the association between ROM preservation and the incidence of screw-loosening.
Validation of Appropriateness Criteria for the Surgical Treatment of Lumbar Degenerative Spondylolisthesis...
SpondylolisthesisThe main objective of this study is the external validation of the appropriateness criteria for the surgical treatment of Lumbar Degenerative Spondylolisthesis. We will assess, prospectively, whether patients treated "appropriately" have better outcomes than those treated "inappropriately" according to the RAND Appropriateness Method (RAM) Criteria.
Retrospective Modulus ALIF Study
Degenerative Disc DiseaseSpondylolisthesis1 moreThe primary objective of this study is to evaluate the safety and performance of the Modulus ALIF System in patients undergoing anterior lumbar interbody fusion (ALIF) as measured by reported complications, radiographic outcomes, and patient-reported outcomes.
Rest Before Physical Therapy in Adolescents With Active Spondylolysis and Spondylolisthesis
SpondylolysisSpondylolisthesis1 moreThis is a retrospective chart review with a short follow-up phone questionnaire for our patients who have been treated by Nationwide Children's Hospital physical therapy and sports medicine for a spondylolysis or spondylolisthesis injury. Currently, no research exists to guide referral for safe physical therapy rehabilitation for patients with spondylolysis and spondylolisthesis injuries. By performing this retrospective study the investigators can gain information to better guide physical therapy referral time. This may also serve as foundation for a future prospective randomized trial. Currently, Nationwide Children Hospital physicians vary from immediate referral to physical therapy to 3 + months of rest prior to beginning therapy. By performing a retrospective chart review assessing time to referral to therapy and patient outcomes the investigator can gain some guidance for when it is safe to prescribe physical therapy rehabilitation for patients with spondylolysis and spondylolisthesis injuries. Patients with an active spondylolysis or spondylolisthesis injury who are referred to physical therapy early will return to activity/sport sooner without increased risk of adverse reaction.
A Prospective Study of Instrumented, Posterolateral Lumbar Fusions (PLF) With OsteoAMP®
SpondylolisthesisScoliosis1 moreOsteoAMP is a novel allograft bone graft substitute (BGS) that has been processed to retain multiple endogenous growth factors for use in spinal fusion. The study is designed to obtain a higher level of clinical evidence for OsteoAMP in spinal fusion procedures and not to garner FDA regulatory approval. This is a prospective, non-randomized, non-controlled, multi-center study of OsteoAMP in instrumented, posterolateral lumbar fusion (PLF) in patients with degenerative disc disease, degenerative spondylolisthesis (up to grade 1), and/or mild degenerative scoliosis, up to 25 degree curvature. Patients that are scheduled to undergo instrumented, posterolateral spinal fusion surgery as part of their medical treatment and comply with the study eligibility criteria will be given the opportunity to consent and be entered into the study.
Supine vs. Upright Weight Bearing MRI in the Evaluation of Patients With Lumbar Spondylolisthesis...
SpondylolisthesisThis study investigates the possible differences in images obtained in patients with lumbar spondylolisthesis when positioned in an upright weight bearing position compared with traditional supine positioning for lumbar MRI.
MLX/XLX ACR Expandable Lumbar Interbody Implants
Degenerative Disc DiseaseSpondylolisthesis1 moreThe objective of this study is to evaluate the safety and performance of thoracic and/or lumbar spine surgery using the MLX and XLX ACR interbody implants as measured by reported complications, radiographic outcomes, and clinical patient outcomes. This study is being undertaken to identify possible residual risks and to clarify mid- to long-term clinical performance that may affect the benefit/risk ratios of the MLX and XLX ACR interbody implants.
Spinal Fusion and Rehabilitation Study
SpondylolisthesisDegenerative2 moreThe aim of the present study is to analyse the significance of postoperative combined strength and aerobic training for outcome of the lumbar fusion patients compared to usual care (patients with isthmic or degenerative spondylolisthesis).