Posterior lumbar interbody fusion (PLIF) implants are increasingly being used for 360 degrees fusion after decompression of lumbar spinal stenosis combined with degenerative instability. Both titanium and PEEK (PolyEtherEtherKetone) implants are commonly used. Assessing the clinical and radiological results as well as typical complications, such as migration of the cages, is important. In addit...

STUDY DESIGN Electronic survey. OBJECTIVE To identify the surgical treatment patterns for low back pain (LBP), among U.S. spine surgeons. Specifically determine (1) differences in surgical treatment responses based on various demographic variables; (2) probability of disagreement based on surgeon subgroups. SUMMARY OF BACKGROUND DATA Multiple surgical and nonsurgical treatments exist for LB...

OBJECTIVE For multi-level spondylolysis patients, surgeons commonly choose to fix all the segments with pars interarticularis defect even those without slippage and not responsible for clinical symptoms. In this study, we tried to study the necessity of the preventative long-segment surgery for the defected segment without slippage in treatment of multi-level spondylolysis patients from a biome...

OBJECTIVE Although trunk muscles in the lumbar spine preserve spinal stability and motility, little is known about the relationship between trunk muscles and spinal fusion rate. The aim of the present study is to evaluate the correlation between trunk muscles cross sectional area (MCSA) and fusion rate after posterior lumbar interbody fusion (PLIF) using stand-alone cages. METHODS A total of ...

STUDY DESIGN A retrospective study. OBJECTIVE The purpose of this study was to investigate: (1) patient-based surgical outcomes of posterior lumbar interbody fusion (PLIF); (2) correlations between patient-based surgical outcomes and surgeon-based surgical outcomes; (3) factors associated with patient satisfaction. SUMMARY OF BACKGROUND DATA There have been no reports of patient-based surgi...

Abstract In recent years, conditioned particle image velocimetry (CPIV) has attracted much attention for flame front extraction. It is an economical and straightforward technique because the can be obtained simply from Mie-scattering images. current work, hydroxyl planar laser-induced fluorescence (OH-PLIF) measurements were taken simultaneously to study applicability of CPIV under conditions w...

Planar laser-induced fluorescence (PLIF) of nitric oxide is used to measure a component of the velocity field for the Mach 7 flow around a cone. Velocities are measured in the freestream, shock layer, and the separated region behind the cone. The measurements are compared with computational fluid dynamics (CFD) codes. The comparison indicates that the CFD correctly predicts the flow over the fo...

In situ planar laser-induced fluorescence (PLIF) shows the effects of pyrolysis peak temperature and holding time on formation 3–5 rings polyaromatic hydrocarbons (PAHs) in vapour phase during biomass samples.