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ACKNOWLEDGEMENTS The information in this report draws from the specimens and collection label information resources of the Rocky is a botanist with the Colorado Natural Heritage Program (CNHP). Mr. Anderson's work at CNHP includes inventory and mapping of rare plants throughout Colorado, mapping weeds, maintaining and updating CNHP's database, and writing(More)
Their interest in the project and time spent answering questions were extremely valuable, and their insights into the distribution, habitat, taxonomy, and ecology of Ipomopsis polyantha were crucial to this project. Thanks also to for assisting with questions and project management. Jane Nusbaum and Barbara Brayfield provided crucial financial oversight.(More)
Ipomopsis globularis (Globe gilia), and Saussurea weberi (Weber's saussurea) are globally imperiled plant species known only from geographically restricted areas in alpine habitats of the Rocky Mountains. These species were observed in the Mosquito Range of Colorado to determine the diversity of insect visitors (potential pollinators) and approximate insect(More)
Significant advances have been made in the contemporary management of thoracolumbar spinal deformities, including improved segmental bony fixation, techniques for osteotomy, and mechanically powerful reduction maneuvers, which now allow the spinal surgeon to correct severe, complex, and rigid spinal deformities. However, one of the major limitations of(More)
Minimally invasive spine surgery is a rapidly developing field that has the potential to decrease surgical morbidity and improve recovery compared to traditional spinal approaches. Minimally invasive approaches have been developed for all regions of the spine, but have been best documented for degenerative conditions of the lumbar spine. Lumbar(More)
OBJECT The overall incidence of complications or adverse events in spinal surgery is unknown. Both prospective and retrospective analyses have been performed, but the results have not been critically assessed. Procedures for different regions of the spine (cervical and thoracolumbar) and the incidence of complications for each have been reported but not(More)
Percutaneous pedicle screw fixation for lumbar posterolateral instrumented fusion is an attractive alternative to standard open techniques. The technical aspects of this procedure can be challenging and even frustrating when first learning the technique. However, once these techniques have been mastered, they offer a safe, less invasive, less traumatic,(More)
Minimally invasive spinal instrumentation techniques have evolved tremendously over the past decade. Although there have been numerous reports of lumbar instrumentation performed via a percutaneous or minimal incisional route, to date there have been no reports of minimally invasive iliac screw placement. A method was developed for accurate placement of(More)
STUDY DESIGN A new proposed classification system for thoracolumbar (TL) spine injuries, including injury severity assessment, designed to assist in clinical management. OBJECTIVE To devise a practical, yet comprehensive, classification system for TL injuries that assists in clinical decision-making in terms of the need for operative versus nonoperative(More)