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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)
BACKGROUND CONTEXT Vertebral osteomyelitis can be successfully treated with spinal immobilization and parenteral antibiotics. Failure of medical therapy may necessitate surgical treatment consisting of anterior debridement and structural anterior column reconstruction. Autologous structural bone graft has traditionally been the gold standard in anterior(More)
STUDY DESIGN Three noncontiguous spinal implant sites in 1 rabbit were challenged with Staphylococcus aureus and local antibiotic prophylaxis was given with gentamicin in controlled-release microspheres (poly(lactic-coglycolic-acid) [PLGA]). Postoperative biomaterial-centered infection on and around the titanium rods was assessed using standard bacterial(More)
In a reliable signalling system, individual quality is expected to mediate the costs associated with ornamental displays, with relatively lower costs being paid by individuals of higher quality. These relative costs should depend not only on individual quality, but also on levels of intra-sexual competition. We explored the current and delayed effects that(More)
STUDY DESIGN Cadaveric specimens were measured to determine appropriate placement for C1 lateral mass screws. Instrumentation guidelines were developed and used to instrument a series of cadaveric specimens. Clinical experience with C1 lateral mass fixation was reviewed to evaluate results. Postoperative computed tomographic (CT) scans were reviewed to(More)
STUDY DESIGN A retrospective review. OBJECTIVE The purpose of this study is to document a series of cases of neurologic deficit following percutaneous vertebral stabilization, to identify patterns of neurologic injury, and to describe potential methods for avoiding these injuries. SUMMARY OF BACKGROUND DATA Percutaneous vertebral stabilization(More)
STUDY DESIGN Literature review. OBJECTIVES It was the purpose of the Spine Trauma Study Group to compile a collection of clinically useful imaging methods used in lower cervical spine trauma and to describe in detail how these measurements should be made. SUMMARY OF BACKGROUND DATA Injury detection, description, and treatment decision-making rely on(More)
BACKGROUND Lateral mass screw fixation with plates or rods has become the standard method of posterior cervical spine fixation and stabilization for a variety of surgical indications. Despite ubiquitous usage, the safety and efficacy of this technique have not yet been established sufficiently to permit "on-label" U.S. Food and Drug Administration approval(More)
STUDY DESIGN Retrospective radiographic review. OBJECTIVE To determine whether clinical factors or common classification systems can predict the radiologic outcome of short-segment thoracolumbar fracture fixation. SUMMARY OF BACKGROUND DATA Previous reports have indicated that short-segment thoracolumbar fracture fixation might not be appropriate for(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)