Now showing 1 - 10 of 25
  • 2020Journal Article
    [["dc.bibliographiccitation.firstpage","E16"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Neurosurgical Focus"],["dc.bibliographiccitation.volume","49"],["dc.contributor.author","Bettag, Christoph"],["dc.contributor.author","Abboud, Tammam"],["dc.contributor.author","von der Brelie, Christian"],["dc.contributor.author","Melich, Patrick"],["dc.contributor.author","Rohde, Veit"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.date.accessioned","2021-04-14T08:23:53Z"],["dc.date.available","2021-04-14T08:23:53Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.3171/2020.5.FOCUS20267"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81082"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1092-0684"],["dc.title","Do we underdiagnose osteoporosis in patients with pyogenic spondylodiscitis?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2019Journal Article
    [["dc.bibliographiccitation.firstpage","e74"],["dc.bibliographiccitation.journal","World Neurosurgery"],["dc.bibliographiccitation.lastpage","e80"],["dc.bibliographiccitation.volume","131"],["dc.contributor.author","Müller, Sebastian J."],["dc.contributor.author","Freimann, Florian B."],["dc.contributor.author","von der Brelie, Christian"],["dc.contributor.author","Rohde, Veit"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.date.accessioned","2020-12-10T15:21:43Z"],["dc.date.available","2020-12-10T15:21:43Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1016/j.wneu.2019.07.014"],["dc.identifier.issn","1878-8750"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73130"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Test-Retest Reliability of Outpatient Telemetric Intracranial Pressure Measurements in Shunt-Dependent Patients with Hydrocephalus and Idiopathic Intracranial Hypertension"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2015Journal Article
    [["dc.bibliographiccitation.firstpage","1819"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Acta Neurochirurgica"],["dc.bibliographiccitation.lastpage","1823"],["dc.bibliographiccitation.volume","157"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.contributor.author","Martinez, Ramon"],["dc.contributor.author","Alaid, Awad"],["dc.contributor.author","von Eckardstein, Kajetan L."],["dc.contributor.author","Akhavan-Sigari, Reza"],["dc.contributor.author","Hahn, Anselm W."],["dc.contributor.author","Stockhammer, Florian"],["dc.contributor.author","Rohde, Veit"],["dc.date.accessioned","2018-11-07T09:51:13Z"],["dc.date.available","2018-11-07T09:51:13Z"],["dc.date.issued","2015"],["dc.description.abstract","Robotic assistance for the placement of pedicle screws has been established as a safe technique. Nonetheless rare instances of screw misplacement have been reported.The aim of the present retrospective study is to assess whether experience and time affect the accuracy of screws placed with the help of the SpineAssist (TM) robot system. Postoperative computed tomography (CT) scans of 258 patients requiring thoracolumbar pedicle screw instrumentation from 2008 to 2013 were reviewed. Overall, 13 surgeons performed the surgeries. A pedicle breach of > 3 mm was graded as a misplacement. Surgeons were dichotomised into an early and experienced period in increments of five surgeries. In 258 surgeries, 1,265 pedicle screws were placed with the aid of the robot system. Overall, 1,217 screws (96.2 %) were graded as acceptable. When displayed by surgeon, the development of percent misplacement rates peaked between 5 and 25 surgeries in 12 of 13 surgeons. The overall misplacement rate in the first five surgeries was 2.4 % (6/245). The misplacement rate rose to 6.3 % between 11 and 15 surgeries (10/158; p = 0.20), and reached a significant peak between 16 and 20 surgeries with a rate of 7.1 % (8/112; p = 0.03). Afterwards, misplacement rates declined. A major peak in screw inaccuracies occurred between cases 10 and 20, and a second, smaller one at about 40 surgeries. One potential explanation could be a transition from decreased supervision (unskilled but aware) to increased confidence of a surgeon (unskilled but unaware) who adopts this new technique prior to mastering it (skilled). We therefore advocate ensuring competent supervision for new surgeons at least during the first 25 procedures of robotic spine surgery to optimise the accuracy of robot-assisted pedicle screws."],["dc.identifier.doi","10.1007/s00701-015-2535-0"],["dc.identifier.isi","000361389600031"],["dc.identifier.pmid","26287268"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35872"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Wien"],["dc.relation.issn","0942-0940"],["dc.relation.issn","0001-6268"],["dc.title","Unskilled unawareness and the learning curve in robotic spine surgery"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2017Journal Article
    [["dc.bibliographiccitation.artnumber","E13"],["dc.bibliographiccitation.firstpage","E13"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Neurosurgical Focus"],["dc.bibliographiccitation.volume","42"],["dc.contributor.author","Solomiichuk, Volodymyr"],["dc.contributor.author","Fleischhammer, Julius"],["dc.contributor.author","Molliqaj, Granit"],["dc.contributor.author","Warda, Jwad"],["dc.contributor.author","Alaid, Awad"],["dc.contributor.author","von Eckardstein, Kajetan"],["dc.contributor.author","Schaller, Karl"],["dc.contributor.author","Tessitore, Enrico"],["dc.contributor.author","Rohde, Veit"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.date.accessioned","2020-12-10T18:44:04Z"],["dc.date.available","2020-12-10T18:44:04Z"],["dc.date.issued","2017"],["dc.description.abstract","OBJECTIVE Robot-guided pedicle screw placement is an established technique for the placement of pedicle screws. However, most studies have focused on degenerative disease. In this paper, the authors focus on metastatic spinal disease, which is associated with osteolysis. The associated lack of dense bone may potentially affect the automatic recognition accuracy of radiography-based surgical assistance systems. The aim of the present study is to compare the accuracy of the SpineAssist robot system with conventional fluoroscopy-guided pedicle screw placement for thoracolumbar metastatic spinal disease. METHODS Seventy patients with metastatic spinal disease who required instrumentation were included in this retrospective matched-cohort study. All 70 patients underwent surgery performed by the same team of experienced surgeons. The decision to use robot-assisted or fluoroscopy-guided pedicle screw placement was based the availability of the robot system. In patients who underwent surgery with robot guidance, pedicle screws were inserted after preoperative planning and intraoperative fluoroscopic matching. In the \"conventional\" group, anatomical landmarks and anteroposterior and lateral fluoroscopy guided placement of the pedicle screws. The primary outcome measure was the accuracy of screw placement on the Gertzbein-Robbins scale. Grades A and B (<2-mm pedicle breach) were considered clinically acceptable, and all other grades indicated misplacement. Secondary outcome measures included an intergroup comparison of direction of screw misplacement, surgical site infection, and radiation exposure. RESULTS A total of 406 screws were placed at 206 levels. Sixty-one (29.6%) surgically treated levels were in the upper thoracic spine (T1-6), 74 (35.9%) were in the lower thoracic spine, and the remaining 71 (34.4%) were in the lumbosacral region. In the robot-assisted group (Group I; n = 35, 192 screws), trajectories were Grade A or B in 162 (84.4%) of screws. The misplacement rate was 15.6% (30 of 192 screws). In the conventional group (Group II; n = 35, 214 screws), 83.6% (179 of 214) of screw trajectories were acceptable, with a misplacement rate of 16.4% (35 of 214). There was no difference in screw accuracy between the groups (chi-square, 2-tailed Fisher's exact, p = 0.89). One screw misplacement in the fluoroscopy group required a second surgery (0.5%), but no revisions were required in the robot group. There was no difference in surgical site infections between the 2 groups (Group I, 5 patients [14.3%]; Group II, 8 patients [22.9%]) or in the duration of surgery between the 2 groups (Group I, 226.1 +/- 78.8 minutes; Group II, 264.1 +/- 124.3 minutes; p = 0.13). There was also no difference in radiation time between the groups (Group I, 138.2 +/- 73.0 seconds; Group II, 126.5 +/- 95.6 seconds; p = 0.61), but the radiation intensity was higher in the robot group (Group I, 2.8 +/- 0.2 mAs; Group II, 2.0 +/- 0.6 mAs; p < 0.01). CONCLUSIONS Pedicle screw placement for metastatic disease in the thoracolumbar spine can be performed effectively and safely using robot-guided assistance. Based on this retrospective analysis, accuracy, radiation time, and post-operative infection rates are comparable to those of the conventional technique."],["dc.identifier.doi","10.3171/2017.3.FOCUS1710"],["dc.identifier.eissn","1092-0684"],["dc.identifier.isi","000400609800017"],["dc.identifier.pmid","28463620"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78315"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Amer Assoc Neurological Surgeons"],["dc.relation.issn","1092-0684"],["dc.title","Robotic versus fluoroscopy-guided pedicle screw insertion for metastatic spinal disease: a matched-cohort comparison"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2018Journal Article
    [["dc.bibliographiccitation.firstpage","523"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Clinical Neuroradiology"],["dc.bibliographiccitation.lastpage","532"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.contributor.author","Remonda, Luca"],["dc.contributor.author","Gruber, Philipp"],["dc.contributor.author","Fandino, Javier"],["dc.contributor.author","Rohde, Veit"],["dc.contributor.author","Fathi, Ali-Reza"],["dc.contributor.author","Berberat, Jatta"],["dc.date.accessioned","2020-12-10T14:07:56Z"],["dc.date.available","2020-12-10T14:07:56Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1007/s00062-018-0686-0"],["dc.identifier.eissn","1869-1447"],["dc.identifier.issn","1869-1439"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70335"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Cervical Spine Prospective Feasibility Study"],["dc.title.alternative","Dynamic Flexion-Extension Diffusion-Tensor Weighted Magnetic Resonance Imaging"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2022Journal Article
    [["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.journal","Journal of Neurosurgery"],["dc.bibliographiccitation.lastpage","6"],["dc.contributor.author","Bettag, Christoph"],["dc.contributor.author","Hussein, Abdelhalim"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.contributor.author","Barrantes-Freer, Alonso"],["dc.contributor.author","Abboud, Tammam"],["dc.contributor.author","Rohde, Veit"],["dc.contributor.author","Mielke, Dorothee"],["dc.date.accessioned","2022-06-01T09:39:47Z"],["dc.date.available","2022-06-01T09:39:47Z"],["dc.date.issued","2022"],["dc.description.abstract","OBJECTIVE Fluorescence-guided resection of cerebral metastases has been proposed as an approach to visualize residual tumor tissue and maximize the extent of resection. Critics have argued that tumor cells at the resection margins might be overlooked under microscopic visualization because of technical limitations. Therefore, an endoscope, which is capable of inducing fluorescence, has been applied with the aim of improving exposure of fluorescent tumor tissue. In this retrospective analysis, authors assessed the utility of endoscope assistance in 5-aminolevulinic acid (5-ALA) fluorescence–guided resection of brain metastases. METHODS Between June 2013 and December 2016, a standard 20-mg/kg dose of 5-ALA was administered 4 hours prior to surgery in 26 patients with suspected single brain metastases. After standard neuronavigated microsurgical tumor resection, a microscope capable of inducing fluorescence was used to examine tumor margins. The authors classified the remaining fluorescence into 3 grades (0 = none, 1 = weak, and 2 = strong). Endoscopic assistance was employed if no or only weak fluorescence was visualized at the resection margins under the microscope. Endoscopically identified fluorescent tissue at the margins was resected and evaluated separately via histological examination to prove or disprove tumor infiltration. RESULTS Under the microscope, weakly fluorescent tissue was seen at the margins of the resection cavity in 15/26 (57.7%) patients. In contrast, endoscopic inspection revealed strongly fluorescent tissue in 22/26 (84.6%) metastases. In 11/26 (42.3%) metastases no fluorescence at the tumor margins was detected by the microscope; however, strong fluorescence was visualized under the endoscope in 7 (63.6%) of these 11 metastases. In the 15 metastases with microscopically weak fluorescence, strong fluorescence was seen when using the endoscope. Neither microscopic nor endoscopic fluorescence was found in 4/26 (15.4%) cases. In the 26 patients, 96 histological specimens were obtained from the margins of the resection cavity. Findings from these specimens were in conjunction with the histopathological findings, allowing identification of metastatic infiltration with a sensitivity of 95.5% and a specificity of 75% using endoscope assistance. CONCLUSIONS Fluorescence-guided endoscope assistance may overcome the technical limitations of the conventional microscopic exposure of 5-ALA–fluorescent metastases and thereby increase visualization of fluorescent tumor tissue at the margins of the resection cavity with high sensitivity and acceptable specificity."],["dc.identifier.doi","10.3171/2022.3.JNS212301"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/108564"],["dc.notes.intern","DOI-Import GROB-572"],["dc.relation.eissn","1933-0693"],["dc.relation.issn","0022-3085"],["dc.title","Endoscope-assisted visualization of 5-aminolevulinic acid fluorescence in surgery for brain metastases"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2018Journal Article
    [["dc.bibliographiccitation.firstpage","84"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Neurosurgery"],["dc.bibliographiccitation.lastpage","90"],["dc.bibliographiccitation.volume","129"],["dc.contributor.author","Malinova, Vesna"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.contributor.author","Voit, Martin"],["dc.contributor.author","Suntheim, Patricia"],["dc.contributor.author","Rohde, Veit"],["dc.contributor.author","Mielke, Dorothee"],["dc.date.accessioned","2020-12-10T18:44:04Z"],["dc.date.available","2020-12-10T18:44:04Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.3171/2017.3.JNS162505"],["dc.identifier.eissn","1933-0693"],["dc.identifier.issn","0022-3085"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78317"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","The impact of temporary clipping during aneurysm surgery on the incidence of delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2022Journal Article
    [["dc.bibliographiccitation.journal","Journal of Neurological Surgery Part A: Central European Neurosurgery"],["dc.contributor.author","Abboud, Tammam"],["dc.contributor.author","Melich, Patrick"],["dc.contributor.author","Scheithauer, S"],["dc.contributor.author","Rohde, Veit"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.date.accessioned","2022-04-01T10:01:47Z"],["dc.date.available","2022-04-01T10:01:47Z"],["dc.date.issued","2022"],["dc.description.abstract","Objective: Infectious spondylodiscitis is a heterogeneous disease usually affecting a fragile patient population with multiple comorbidities. Therefore, surgical and medical complications are important considerations before initiating treatment. Methods: This retrospective analysis included data of 218 patients who underwent surgical treatment for pyogenic spondylodiscitis between 2008 and 2016. Groups were divided into length of hospital stay (LOS) of >21 days (Group I =<21 days, Group II > 21days). Analysis included patient age, gender, Charlson Comorbidity Index, smoking, obesity, osteoporosis, colonization with multidrug-resistant bacteria, preoperative neurological deficit, pre- und postoperative inflammation markers (CRP and WBC), duration of surgery, number of operated segments, vertebrectomy, postoperative medical and surgical complications. The case value for each patient expressed in Euro was retrieved from hospital records and included in the analysis. Results: Duration of stay after surgical treatment of spondylodiscitis was =<21 days (4 to 21, mean 16 days) in 41% and > 21 days (22 to 162, mean 41 days) in 59% of the patients. Multivariate analysis showed that both medical complications (OR 2.62, 95% CI 1.24-5.56, p=0.012) and surgical site infection (OR 6.04, 95% CI 2.35-15.51, p<0.001) were independently associated with a long hospital stay. Case values averaged at 21,667 ± 1,579 Euro (min: 2,888 and max: 203,802 Euro) and correlated significantly with the length of hospital stay (Pearson correlation coefficient 0.681, p<0.05). The occurrence of a postoperative complication increased the cost of care significantly from 17,790 to 24,527 Euro on average (p=0.025). Conclusions: This study provides benchmark data for patients treated surgically for spondylodiscitis. Surgical site infection and medical complications are the main drivers of prolonged hospital stays and cost of care."],["dc.identifier.doi","10.1055/a-1811-7633"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/105749"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","2193-6323"],["dc.relation.issn","2193-6315"],["dc.title","Complications, length of hospital stay and cost of care after surgery for pyogenic spondylodiscitis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2017Journal Article
    [["dc.bibliographiccitation.firstpage","489"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Neurosurgical Review"],["dc.bibliographiccitation.lastpage","496"],["dc.bibliographiccitation.volume","41"],["dc.contributor.author","Alaid, Awad"],["dc.contributor.author","von Eckardstein, Kajetan"],["dc.contributor.author","Smoll, Nicolas Roydon"],["dc.contributor.author","Solomiichuk, Volodymyr"],["dc.contributor.author","Rohde, Veit"],["dc.contributor.author","Martinez, Ramon"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.date.accessioned","2020-12-10T14:11:12Z"],["dc.date.available","2020-12-10T14:11:12Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1007/s10143-017-0877-1"],["dc.identifier.eissn","1437-2320"],["dc.identifier.issn","0344-5607"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70997"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Robot guidance for percutaneous minimally invasive placement of pedicle screws for pyogenic spondylodiscitis is associated with lower rates of wound breakdown compared to conventional fluoroscopy-guided instrumentation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2019Journal Article
    [["dc.bibliographiccitation.firstpage","1037"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Acta Neurochirurgica"],["dc.bibliographiccitation.lastpage","1045"],["dc.bibliographiccitation.volume","161"],["dc.contributor.author","Fiss, Ingo"],["dc.contributor.author","Hussein, Abdelhalim"],["dc.contributor.author","Barrantes-Freer, Alonso"],["dc.contributor.author","Sperling, Swetlana"],["dc.contributor.author","Hernandez-Duran, Silvia"],["dc.contributor.author","Wolfert, Christina"],["dc.contributor.author","Pukrop, Tobias"],["dc.contributor.author","Ninkovic, Milena"],["dc.contributor.author","Bleckmann, Annalen"],["dc.contributor.author","Rohde, Veit"],["dc.contributor.author","Mielke, Dorothee"],["dc.contributor.author","Schatlo, Bawarjan"],["dc.date.accessioned","2020-12-10T14:10:53Z"],["dc.date.available","2020-12-10T14:10:53Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1007/s00701-019-03842-3"],["dc.identifier.eissn","0942-0940"],["dc.identifier.issn","0001-6268"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70910"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Cerebral metastases: do size, peritumoral edema, or multiplicity predict infiltration into brain parenchyma?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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