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Increasing interest in the responsible management of technology in the industrial and agricultural sectors of the economy has been met thorough the development of broadly applicable tools to assess the "sustainability" of new technologies. An arena ripe for application of such analysis is the deployment of transgenic crops. The new transgenic pesticidal or(More)
BACKGROUND Sacroiliac joint (SIJ) dysfunction is a prevalent cause of chronic, unremitting lower back pain. OBJECTIVE To concurrently compare outcomes after surgical and nonsurgical treatment for chronic SIJ dysfunction. METHODS A total of 148 subjects with SIJ dysfunction were randomly assigned to minimally invasive SIJ fusion with triangular titanium(More)
The cases of all patients treated with halo-vests for cervical trauma at the University of Virginia since 1977 were analyzed retrospectively. A standardized chart and radiographic review protocol were used to identify complications associated with the use of the orthosis. Two hundred and forty-five patients satisfied the criteria for inclusion in the study.(More)
STUDY DESIGN The opinions of orthopedic surgeons and neurosurgeons were compared regarding appropriate management of selected cervical injuries and the timing of stabilization. OBJECTIVE To determine whether there is consistency of opinion regarding the management of cervical trauma. SUMMARY OF BACKGROUND DATA Numerous forms of management for cervical(More)
A case of lumbar facet joint infection associated with abscesses of the paraspinal muscles and the epidural space is presented. The infection did not respond to intravenous antibiotic therapy and resolved only after incision and drainage of the epidural space, involved facet joint, and paraspinal musculature. Magnetic resonance imaging, which showed a(More)
OBJECT In this clinical review of ankylosing spondylitis, the authors emphasize the fragility of the spine and the degree of neurological deficit that can result from minor injury. The management of thoracolumbar fractures complicating ankylosing spondylitis is discussed. METHODS Six thoracic and five lumbar fractures were identified in a review of(More)
STUDY DESIGN Survey-based descriptive study. OBJECTIVE To study relationships between surgeon-specific factors and surgical approach to degenerative diseases of the cervical spine. SUMMARY OF BACKGROUND DATA Geographic variations in the rates of cervical spine surgery are significant within the United States. Although surgeon density correlates with the(More)
Case report of a complete arcuate foramen in a human atlas vertebra inhibiting the placement of lateral mass screw instrumentation at C1. Our objective is to report the presentation of the case, the operative considerations, and the management for this anatomic variation. The groove for the vertebral artery on the posterolateral surface of the atlas (C1)(More)
STUDY DESIGN Survey-based descriptive study. OBJECTIVE To study relationships between surgeon-specific factors and surgical approach to degenerative diseases of the lumbar spine. SUMMARY OF BACKGROUND DATA Geographic variations in the rates of lumbar spine surgery are significant within the United States. Although surgeon density correlates with the(More)
The halo vest is considered by us, as well as by the majority of orthopaedic surgeons, to be the best commercially available orthosis for control of the cervical spine. However, we have seen five patients with posterior ligament injury of the neck who sustained a recurrence of facet dislocation or subluxation while in a halo vest.