Danielle D. Langeloo

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STUDY DESIGN A descriptive historic cohort study was conducted. OBJECTIVES To determine intraoperative response amplitude criteria for transcranial electrical motor-evoked potential monitoring that warn of neurologic damage, and to determine the additional value of monitoring six instead of two muscle sites. SUMMARY OF BACKGROUND DATA Transcranial(More)
Motor evoked potentials (MEPs) evoked by transcranial electrical stimulation (TES) have become an important technique for monitoring spinal cord function intra-operatively, but can fail in some patients. A new technique of double-train stimulation is described. A multipulse transcranial electrical stimulus is preceded by a preconditioning pulse train that(More)
Objectives: Cervical osteotomy can be performed on patients with cervical kyphosis due to ankylosing spondylitis. This study reviews the role of two new developments in cervical osteotomy surgery: internal fixation and transcranial electrical stimulated motor evoked potential monitoring (TES-MEP). Methods: From 1999 to 2004, 16 patients underwent a(More)
STUDY DESIGN A historic cohort study of the sagittal alignment in 33 consecutive patients with surgically corrected thoracic Scheuermann kyphosis. OBJECTIVES To determine if postsurgical imbalance, sagittal malalignment, and decreased lumbar-pelvic range of motion in patients with thoracic Scheuermann kyphosis is related to tight hamstrings. SUMMARY OF(More)
STUDY DESIGN A historic cohort study was conducted to investigate surgical correction and sagittal alignment in 33 patients with thoracic Scheuermann's disease. OBJECTIVE To evaluate kyphosis correction, correction loss, sagittal balance, and the effect of an anterior release. SUMMARY OF BACKGROUND DATA Currently, both posterior and anteroposterior(More)
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