Spine
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Retrospective cohort study. ⋯ Our series demonstrate a two-fold reduction of SSI with implementation of PPSA regimen. This benefit was demonstrated separately for both cervical and lumbar regions. Randomized trials and increase in sample size are warranted to elucidate the significance of PPSA in posterior spinal surgery.Level of Evidence: 3.
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Micro-computed tomography- (micro-CT-) based finite element analysis of cadaveric human lumbar vertebrae virtually implanted with total disc arthroplasty (TDA) implants. ⋯ Typically-sized TDA implants disproportionately increase the bone-tissue stress in more porous vertebrae; this affect is accentuated when the implant impinges in sagittal bending.Level of Evidence: N/A.