Spine
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A retrospective comparative study with radiographic measurements. ⋯ PSAs played an important role in FASV. MIS allowed greater PSAs and resulted in fewer incidences of FASV. To avoid FASV in 90% of patients, the PSAs might be at least 11.9° and 15.9° at L4 level, and 15.9° and 21.8° at L5 level for OS and MIS techniques, respectively.Level of Evidence: 3.
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A retrospective study. ⋯ Through our study, the risk factors of Post sagittal imbalance were the Post value of PI-LL and that of PTr, and target value of PI-LL was <1.33 and that of PTr was <25.95%. These target values can be effective guidelines for spine surgeons who perform spine reconstruction surgeries for elderly patients with a pure sagittal imbalance based on Schwab's formula.Level of Evidence: 4.
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Retrospective cross-sectional analysis. ⋯ Pre-treatment PROMIS scores do not adequately capture the disease-specific impact of spinal stenosis, but postoperative PROMIS scores better reflect outcomes after surgery for LSS. PROMIS scores should not be used in isolation to assess outcomes in patients with LSS.Level of Evidence: 4.
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Observational Study
What is the Return on Investment of Spine Society Research Grants?
Retrospective, observational -study. ⋯ CSRS grants appear to have the highest ROI of all spine society grants when evaluating subsequent NIH and DOD funding. However, the overall conversion rate to NIH and DOD grants remains low.Level of Evidence: 3.