Journal of orthopaedic surgery and research
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To evaluate the short-term in vivo dynamic motion characteristics of the lower lumbar spine (L3-S1) after unilateral pedicle screw fixation (UPSF) or bilateral pedicle screw fixation (BPSF) combined with TLIF for treatment of L4-5 lumbar degenerative disc diseases (DDD). ⋯ The ROM in left-right twisting of UPSF group was significantly larger compared with BPSF group at the index level in the short term. The UPSF has less impact on the cranial adjacent level (L3-4) in left-right twisting and bending activities compared to the BPSF. The data implied that the UPSE and BPSF combined with TLIF would result in different biomechanics in the index and cranial adjacent segment biomechanics. Long-term follow-up studies are necessary to compare the clinical outcomes of the two surgeries.
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Observational Study
The impact of warfarin on operative delay and 1-year mortality in elderly patients with hip fracture: a retrospective observational study.
Guidelines underline the importance of early surgery in elderly patients with proximal femoral fractures. However, most of these patients present a high number of comorbidities, some of which require the use of warfarin. Waiting for INR decrease is a cause of surgical delay, and this influences negatively their outcome. ⋯ Warfarin therapy at the time of proximal femoral fractures is associated with increased time to surgery, blood loss, and mortality.