World Neurosurg
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Intraoperative functional cortical mapping using direct electrical stimulation may show a wider individual variability than suggested by noninvasive imaging data of healthy subjects. ⋯ Intraoperative functional cortical mapping using direct electrostimulation highlights that actual individual variability is wider than suggested by analyses of healthy subjects and results in atypical patterns of functional organization and structural and functional changes of the human cerebral cortex under pathologic conditions.
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Surgical treatment of retrochiasmatic craniopharyngiomas is associated with higher rates of complications, mortality, failure of complete removal, and recurrence compared with craniopharyngiomas located elsewhere. These tumors lie behind the optic chiasm and when large can extend upward into the third ventricle and downward along the brain stem, making their adequate exposure challenging. Most of the proposed techniques either use a translamina terminalis route or require wide bony exposures. In this study, we assessed the feasibility of a subtemporal approach for achieving gross total resection of retrochiasmatic craniopharyngiomas. ⋯ A subtemporal approach can be an attractive alternative approach to accessing retrochiasmatic craniopharyngiomas. Outcomes are comparable to those associated with other widely used and time-consuming exposures.
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Stereotactic radiosurgery (SRS) represents an expanding approach for neurosurgeons and radiation oncologists. We evaluate educational gaps of senior residents drawn from each specialty as part of a focused SRS course. We also evaluate the strengths and limitations of SRS training in current residency programs of the course residents and faculty. ⋯ Knowledge and training gaps in SRS appear evident to the senior residents and faculty of both specialties. We believe that other educational opportunities for SRS experience are necessary to optimize clinical competency, as well as meet future clinical staffing needs for this expanding, multidisciplinary approach. Further evaluation of gaps in SRS is necessary through a larger, nationwide survey of U.S. neurosurgeons, program directors, and residents.
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Injury to distal portion of posterior cord of brachial plexus leads to palsy of radial and axillary nerves. Symptoms are usually motor deficits of the deltoid muscle; triceps brachii muscle; and extensor muscles of the wrist, thumb, and fingers. Tendon transfers, nerve grafts, and nerve transfers are options for surgical treatment of proximal radial nerve palsy to restore some motor functions. Tendon transfer is painful, requires a long immobilization, and decreases donor muscle strength; nevertheless, nerve transfer produces promising outcomes. We present a patient with proximal radial nerve palsy following a blunt injury undergoing triple nerve transfer. ⋯ Our experience confirmed functional elbow, wrist, and finger extensions in the patient. Triple nerve transfer restores functions of the upper limb in patients with debilitating radial nerve palsy after blunt injuries.
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Preoperative embolization of highly vascular tumors of the posterior fossa can decrease morbidity and operative blood loss. No clear consensus exists for the embolization agent of choice for optimal devascularization of these tumors. The purpose of this study was to assess effectiveness of microsphere embolization in reducing tumor hypervascularity before surgical resection. ⋯ Preoperative embolization with microspheres can effectively reduce vascularity of the hypervascular posterior fossa tumor bed. This technique helped achieve complete resection, particularly for patients with recurrence after previous resection.