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BACKGROUND CONTEXT The CHARITE artificial disc, a lumbar spinal arthroplasty device, was approved by the United States Food and Drug Administration in 2004 based on two-year safety and effectiveness data from a multicenter, prospective, randomized investigational device exemption (IDE) study. No long-term, randomized, prospective study on the CHARITE disc(More)
Thirty-eight patients with unstable thoracolumbar and lumbar (T12-L5) spine fractures were treated with Cotrel-Dubousset pedicle screw instrumentation. They were followed for an average of 22.73 months (range 12-39). Measurements of canal compromise, wedge index, and kyphosis correction at follow-up examination were made. Thirty-three (86%) patients(More)
BACKGROUND CONTEXT Morbidity associated with autologous bone graft harvest is an important factor in determining the utility of expensive alternatives such as recombinant bone morphogenic protein. The most frequently reported complication associated with graft harvest is chronic pain. PURPOSE To prospectively determine the degree of pain and morbidity(More)
STUDY DESIGN Retrospective study. OBJECTIVES To determine the frequency of pedicle screw violation of superior nonfused facet joints adjacent to the most cephalad pedicle screws after a midline approach for lumbar fusion. SUMMARY OF BACKGROUND DATA Facet-joint violations have been evaluated in patients undergoing lumbar pedicle screw instrumentation and(More)
BACKGROUND CONTEXT Surgical treatment for lumbar degenerative disc disease (DDD) has been associated with highly variable results in terms of postoperative pain relief and functional improvement. Many experts believe that DDD should be considered a chronic pain disorder as opposed to a degenerative disease. Genetic variation of the(More)
STUDY DESIGN Prospective observational study. OBJECTIVE To determine whether polymorphic variations of the guanosine triphosphate (GTP) cyclohydrolase 1 gene (GCH1) are associated with different outcomes in patients undergoing surgical treatment for lumbar degenerative disc disease (DDD). SUMMARY OF BACKGROUND DATA GCH1, the gene encoding the(More)
BACKGROUND CONTEXT Degenerative disc disease (DDD) is a cause of low back pain commonly requiring surgical intervention. The option of lumbar total disc replacement (TDR) represents an advance in the surgical treatment of DDD. However, new treatments, particularly those that include the use of new implants, may lead to increased costs to both hospitals and(More)
STUDY DESIGN Literature review and expert opinion on the delivery of spine care. OBJECTIVE Our objective was to describe the goals of a spine service line and encourage the implementation of a systems-based approach to spine care. The benefits to patients and institutions are discussed. SUMMARY OF BACKGROUND DATA Spine care delivery and its associated(More)
BACKGROUND CONTEXT Anterior cervical plates are commonly used to provide immediate stabilization after a variety of cervical spine procedures. It has been assumed that the ideal position for anterior cervical spine plates is centered in the horizontal plane without significant angulation and without overlap of adjacent unfused levels. Nevertheless,(More)
This article discusses the roles of the treating physician and attorney regarding work-related disorders. The authors have emphasized the need for commitment to returning the injured worker back to gainful employment as soon as medically safe. The need for communication between physician and attorney is discussed. The authors have also called for greater(More)