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Objective: Recently we have introduced the concept of the “hibernating brain” in patients suffering from chronic hemodynamic ischemia. In the state of misery perfusion an adaptive reorganization of the cortical motor network consisting of a reduced cortico-cortical excitability, elevated[for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Objective: We have recently shown an adaptive reorganization of the corticospinal network in patients with degenerative cervical myelopathy (DCM) which led to the concept of the “corticospinal reserve capacity”. In patients suffering from mild symptoms (JOA>12) and preserved reserve[for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Objective: Meralgia paresthetica (MP), a mononeuropathy of the lateral cutaneous femoral nerve (LCFN), was shown to occur in 32.6 per 100.000 patient years in a population based study between 1990 and 1999 in the United States of America. Since it is associated with diabetes mellitus (DM) and obesity,[for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Objective: In patients suffering from degenerative cervical myelopathy (DCM), conventional radiology with additional electrophysiology often fails to reliable quantify stage of disease and dynamics of disease progression. We have recently introduced the concept of “corticospinal reserve”[for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Objective: Degenerative cervical myelopathy (DCM) shows growing prevalence in industrial nations due to the demographic development. However, the surgical decision-making is still challenging due to the lack of sufficiently reliable predictors of disease progression and surgical outcome. Recently, the[for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Objective: Neurosurgical interventions in the brainstem have a high risk for new postoperative deficits due to the close spatial relation and density of vital neuronal structures. Reliable preoperative methods to evaluate factors that correlate with these risks are necessary for informed therapeutic[for full text, please go to the a.m. URL], 72. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgie

Objective: One of the challenges of tumor resection in motor eloquent areas is the individual risk assessment for a postoperative motor disorder. Previously, a predictive model was developed that permits objective evaluation of the risk prior to surgery based on topographical and neurophysiological [for full text, please go to the a.m. URL], 71. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 9. Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie

Objective: The concept of "Cortico-spinal Reserve in patients suffering from degenerative cervical Myelopathy" (CReMe) has been recently introduced. In patients suffering from mild symptoms (JOA>12) and thus preserved reserve an enlarged motor area due to a higher recruitment of supplementary[for full text, please go to the a.m. URL], 71. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 9. Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie

Objective: Patients with brain tumors in motor eloquent areas are differently affected by motor deficits due to the lesion and surgical intervention. One reason for different dynamics of disease progression and surgical outcome could be an individual potential to compensate impairments of the motor [for full text, please go to the a.m. URL], 71. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 9. Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie

Objective: We have recently shown a compensatory reorganization of the corticospinal network in patients with degenerative cervical myelopathy which led to the concept of the “corticospinal reserve capacity”. In patients suffering from mild symptoms (JOA>12) and preserved reserve [for full text, please go to the a.m. URL], 70. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Skandinavischen Gesellschaft für Neurochirurgie

Objective: Surgical resection of brainstem cavernomas is associated with a high risk of postoperative motor deficit due to immediate vicinity of lesion and essential corticospinal tract fibers (CST) and possible affection of these by the tumor. The current study aims at establishing a reliable and objective[for full text, please go to the a.m. URL], 70. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Skandinavischen Gesellschaft für Neurochirurgie

Objective: Spreading depolarization (SD) occurs in high frequency in patients with malignant hemispheric stroke (MHS) and is coupled to different hyperaemic or hypoaemic blood flow responses. Body temperature is a major trigger for SDs and influences the accompanied flow coupling. Here, we investigated[for full text, please go to the a.m. URL], 69. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Mexikanischen und Kolumbianischen Gesellschaft für Neurochirurgie

Objective: This study aims to improve the prognostic power of the previously described nTMS-based risk-stratification model for surgery of motor area related brain tumors. The current input variables of the model are: presence of infiltration of the primary motor cortex by the tumor, the minimal[for full text, please go to the a.m. URL], 69. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Mexikanischen und Kolumbianischen Gesellschaft für Neurochirurgie

Objective: Navigated transcranial magnetic stimulation (nTMS) is an established non-invasive diagnostic tool to map the primary motor cortex (M1) before brain tumor surgery. The objective of this study is to examine whether nTMS can elicit motor-evoked potentials (MEPs) over non-primary motor areas [for full text, please go to the a.m. URL], 69. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Mexikanischen und Kolumbianischen Gesellschaft für Neurochirurgie

Objective: Spreading depolarization (SD) occurs in high frequency in patients with malignant hemispheric stroke (MHS) and is coupled either to hyperaemic or hypoaemic blood flow responses. After experimental focal ischaemia SD is a significant cause for secondary stroke progression during the initial[for full text, please go to the a.m. URL], 68. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 7. Joint Meeting mit der Society of British Neurological Surgeons (SBNS)

Objective: We have recently shown a compensatory reorganization of the corticospinal network in patients with cervical spondylotic myelopathy which led to the concept of the ‘corticospinal reserve capacity’. In patients with mild symptoms (JOA>12) and preserved reserve an increased[for full text, please go to the a.m. URL], 68. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 7. Joint Meeting mit der Society of British Neurological Surgeons (SBNS)

Objective: In patients with cervical stenosis, functional impairment of the motor pathways is traditionally measured by determination of motor and sensory evoked potentials. The current study aims at establishing a reliable and objective way to measure corticospinal excitability and plastic changes [for full text, please go to the a.m. URL], 67. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 1. Joint Meeting mit der Koreanischen Gesellschaft für Neurochirurgie (KNS)

Objective: Patients with stenoocclusive cerebrovascular disease “Moyamoya Angiopathy” (MMA) often suffer from strokes. Extracranial-intracranial (EC-IC) bypass surgery is the therapy of choice to remedy hemodynamic compromise. As patients clinically improve after cerebral revascularization[for full text, please go to the a.m. URL], 67. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 1. Joint Meeting mit der Koreanischen Gesellschaft für Neurochirurgie (KNS)

Objective: Navigated transcranial magnetic stimulation (nTMS) is a non-invasive examination method used in the preoperative diagnostics for patients with tumors in presumed motor eloquent areas to exactly localize functional areas. The aim of our study is to examine whether the spatial data provided[for full text, please go to the a.m. URL], 66. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: Surgical resection of brainstem tumors is still associated with a high risk of postoperative motor deficit due to complex anatomy and possible impingement of the corticospinal tracts by the tumor. The current study aims at establishing a reliable and objective way to visualize descending [for full text, please go to the a.m. URL], 66. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: Navigated transcranial magnetic stimulation (nTMS) enables delineation of resectable versus non-resectable cortical tissue in motor areas. This study examines the treatment of centrally located tumours during two consecutive periods in the same department –the first without and the[for full text, please go to the a.m. URL], 65. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: Plastic changes of cortical functional anatomy are a frequent phenomenon not only in pathological conditions but also in healthy subjects. The current study aims at establishing a reliable and objective way to measure cortical plastic changes of the motor areas using navigated TMS. Method:[for full text, please go to the a.m. URL], 65. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: Patients with chronic hemodynamic ischemia have a submaximally reduced cerebral bloodflow and an impaired cerebrovascular reserve capacity (CVRC) accompanied by transitory ischemic attacks and/or fixed minor neurological deficits. Extracranial-intracranial (EC-IC) bypass surgery may [for full text, please go to the a.m. URL], 64. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: Navigated transcranial magnetic stimulation (nTMS) is an emerging method used routinely for presurgical motor mapping. Its excellent correlation with direct cortical stimulation has been demonstrated before. In order to further evaluate the reliability of the method we set out to analyze [for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: Patients with chronic ischemia are characterized by a >80% of normal baseline perfusion and loss of reserve capacity resulting in an increased annual stroke risk, i.e. by hemodynamic criteria. In contrast, only little is known about the metabolic state of the chronic ischemic brain.[for full text, please go to the a.m. URL], 61. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC) im Rahmen der Neurowoche 2010