Reconstructing habitat types available to hominins and inferring how the paleo-landscape changed through time are critical steps in testing hypotheses about the selective pressures that drove the emergence of bipedalism, tool use, a change in diet, and progressive encephalization. Change in the amount and distribution of woody vegetation has been suggested as one of the important factors that shaped early hominin evolution. Previous models for reconstructing woody cover at eastern African hominin fossil sites used global-scale modern soil comparative datasets.
View Article and Find Full Text PDFJ Am Acad Orthop Surg Glob Res Rev
August 2024
Introduction: Geriatric hip fractures are associated with high rates of disability and mortality. Many of these patients require perioperative and postoperative allogeneic blood transfusions, which carry several noteworthy risks. A growing body of literature supports the efficacy of tranexamic acid (TXA) in geriatric hip fractures, without sufficient data examining which subgroups are likely to benefit the most.
View Article and Find Full Text PDFPurpose: To describe modes of failure of cervical TDR, their related treatment strategies, and to describe a management strategy for the treatment of failed cervical TDR.
Methods: This retrospective study was based on a consecutive series of 53 cervical TDR patients who underwent removal or revision surgery. Chart review was conducted to collect general descriptive data, reasons for TDR removal/revision, duration from index implantation to re-operation, and the subsequent procedure performed.
Study Design: This was a retrospective study combined with attempted prospective patient contact to collect current data.
Objective: The purpose of this study was to investigate the long-term clinical outcomes of patients undergoing lumbar hybrid surgery (total disk replacement (TDR) at one level and fusion at an adjacent level.
Summary Of Background Data: Many patients with symptomatic lumbar disk degeneration are affected at more than one level.