Study Design. An anatomic study conducted on cadaveric specimens. Objectives. The
objectives of the study were (1) to determine course of S2 lumbopelvic screws with reference to …

Southern Africa produces almost a third of the Earth’s biomass burning (BB) aerosol particles,
yet the fate of these particles and their influence on regional and global climate is poorly …

Pseudarthrosis is the result of failed attempted spinal fusion. This condition typically manifests
with axial or radicular pain months to years after the index operation. Diagnosis is based …

… Address correspondence and reprint requests to Joseph R. O'Brien, MD MPH, The George
Washington Medical Faculty Associates, 2150 Pennsylvania Ave, NW, 7th Floor, Washington, …

Injuries of the nervous system occur commonly among people of many different ages and
backgrounds. Currently, there are no effective strategies to improve neural regeneration; …

Background context Vertebral compression fractures at the proximal junction are common
complications of long spinal fusion surgeries that can contribute to the development of …

Study Design. A cadaveric study with postoperative computed tomography scan to evaluate
instrumentation placement. Objective. To successfully place percutaneous sacropelvic …

The southeastern Atlantic (SEA) and its associated cloud deck, off the west coast of central
Africa, is an area where aerosol–cloud interactions can have a strong radiative impact. …

Materials and Methods After obtaining institutional review board approval, we reviewed all
1485 cases of spine surgery performed at our tertiary-care center between 2002 and 2009. …

Background Utilization of static and expandable interbody spacers for minimally invasive
lateral lumbar interbody fusion (LLIF) offers favorable clinical results. However, complications …