Foundations in Neurological Surgery

Continuously searching for ways to improve resident education, Dr. Ashwini Sharan has begun a series of classes for residents. Each class is a one-day session focused on a specific set of techniques that the resident will need competency in. Using a traditional class format means that each resident is not only drilled on specific skills, but also gets to learn from his fellow students - and future colleagues- by observing them perform the same tasks. The Congress of Neurological Surgeons conference has similar workshops where practicing neurosurgeons can get familiarity with new tools. These classes are intended to ensure that residents enter the OR with a solid foundation of basic skills. The first class was conducted with support from Stryker, a medical technology firm which is interested in staging similar courses at universities around the countr

Evaluating the Migration Rates in Percutaneous Spinal Cord Stimulation Trials

Introduction: Spinal cord stimulation (SCS) provides symptom reduction in patients with chronic low back pain. The most common complication in SCS is percutaneous lead migration from initial placement site. It is our goal to determine whether using skin anchors during trial implantation reduces SCS trial lead migration rates compared to historical controls. Methods: 197 patients who underwent SCS trial placement at Thomas Jefferson University Hospital between 2015 and 2018 were considered for this study. Complete data including device impedance measurements and pre and post trial x-rays was collected on 12 historical control patients and 19 patients with leads secured using an anchor. Results: The mean degree of lead migration was not statistically significantly different between the anchor group and control group in the right lead (0.71 mm (95% CI -6.24, 7.66, p=0.84) and the left lead (-0.85 mm (95% CI -7.70, 6.00, p=0.80). Additionally, there was no statistical difference in device impedance from the first day of the trial to the trial removal date between the anchor group and control group (-47.35 Ohms (95% CI -181.48, 86.78, p=0.47). Discussion: There was no significant reduction in lead migration or device impedance measurement in patients who underwent trial SCS with leads secured with an anchor compared to historical controls. This raises the question of whether the anchoring technique successfully reduces lead migration and emphasizes the importance of obtaining pre and post trial x-rays to evaluate lead migration

Cervical Intramedullary Ganglioma

A 48 year male presented to the ER with severe headaches which were episodic in nature and which had been present for several weeks. Patient had a history of traumatic head injury (TBI) several years prior. Otherwise, he was in good health with no significant past medical or surgical history. On physical exam, patient was oriented x 3 with an intact cranial nerve exam. He had significant upper and lower extremity spasticity with mild hand intrinsic weakness. His motor exam was otherwise unremarkable. His gait was very spastic. He had sustained lower extremity clonus, upgoing toes, and increased tone in the upper and lower extremities. His sensation was intact to light touch, pinprick, proprioception and temperature

Case Report: Intramedullary Cervical Spinal Cord Hemangioblastoma with an Evaluation of von Hippel-Lindau Disease

History of Present Illness MO is a 49 year old male with a history of multiple sclerosis who presents with a one year history of progressive numbness in his shoulders bilateral and upper back. The patient describes occasional sharp pains that radiate to his first three fingers on his right hand. He denies weakness, clumsiness, difficulty walking, or bladder/bowel dysfunction. He describes no problems with handwriting, or fine motor skills

Driving Quality Improvement through the Morbidity and Mortality Conference Portal

Historically, morbidity and mortality conferences in surgical disciplines have been used for blaming, shaming, and explaining. Transparency was not a feature. The Department of Neurosurgery at Thomas Jefferson University Hospital decided to reconfigure their M&M conferences so that they could be used as an opportunity to focus on reporting and evidence-based medicine, and lead to quality improvement projects in the department and the neuroscience hospital. Join Dr. Ashwini Sharon to hear how that was accomplished

A Metastatic Middle Cerebral Artery Aneurysm Caused by an Intraluminal Bronchogenic Tumor Embolus

Objective and Importance: To describe the clinical presentation and neuropathological findings of metastatic cerebral aneurysms of bronchogenic origin. Metastatic bronchogenic cerebral aneurysms are exceptionally rare and have only been reported in association with high grade hemorrhage. Clinical Presentation: One patient presenting with a history of headache, speech difficulty, left-sided “numbness”, left seventh nerve palsy and left hemiparesis was found to have intraparenchymal and subarachnoid hemorrhage with an aneurysm of the right distal Sylvian middle cerebral artery. Intervention: Pterional craniotomy with excision of mycotic segment. Surgical specimen sent to pathology for routine histology and immunohistochemistry. Conclusion: Patients with metastatic cerebral aneuryms of bronchogenic origin usually present with subarachnoid hemorrhage, contrary to prior observations that “hemorrhage from neoplasia-induced aneurysms is paradoxically rare.” A tumor embolus should be considered in the differential diagnosis of a mycotic aneurysm

Variability of patient spine education by Internet search engine.

BACKGROUND: Patients are increasingly reliant upon the Internet as a primary source of medical information. The educational experience varies by search engine, search term, and changes daily. There are no tools for critical evaluation of spinal surgery websites. PURPOSE: To highlight the variability between common search engines for the same search terms. To detect bias, by prevalence of specific kinds of websites for certain spinal disorders. Demonstrate a simple scoring system of spinal disorder website for patient use, to maximize the quality of information exposed to the patient. STUDY DESIGN: Ten common search terms were used to query three of the most common search engines. The top fifty results of each query were tabulated. A negative binomial regression was performed to highlight the variation across each search engine. RESULTS: Google was more likely than Bing and Yahoo search engines to return hospital ads (P=0.002) and more likely to return scholarly sites of peer-reviewed lite (P=0.003). Educational web sites, surgical group sites, and online web communities had a significantly higher likelihood of returning on any search, regardless of search engine, or search string (P=0.007). Likewise, professional websites, including hospital run, industry sponsored, legal, and peer-reviewed web pages were less likely to be found on a search overall, regardless of engine and search string (P=0.078). CONCLUSION: The Internet is a rapidly growing body of medical information which can serve as a useful tool for patient education. High quality information is readily available, provided that the patient uses a consistent, focused metric for evaluating online spine surgery information, as there is a clear variability in the way search engines present information to the patient

Spinal Cord Stimulation in the 21st Century — Reviewing Innovation in Neuromodulation

INTRODUCTION Low back pain (LBP) is a pervasive problem impacting health systems across the world. In the United States, chronic LBP impacts up to 40% of Americans and results in excessive financial strain on the healthcare budget, estimated at up to $100 billion annually.1 Furthermore, treatment results are often disappointing, with the traditional pathway of conservative measures, narcotic pain medication, and surgical decompression and/or fusion leading to both patient and provider frustration, complications, and diminished patient productivity and quality of life. This has naturally led to questions from policymakers regarding the utility of healthcare dollars spent on back pain. In this milieu, a variety of neuromodulation techniques have found a niche in the management of this patient population, with indications commonly quoted including failed back surgery syndrome (FBSS), chronic neuropathic pain, and complex regional pain syndrome (CRPS), among others.1,2 From its inception on the basis of Melzak and Wall’s gate theory³, to its first human trial in the 1960s,⁴ and to the modern era, spinal cord stimulation has undergone a series of innovations that have expanded indications and improved patient outcomes. The goal of this study is to summarize the most important clinical trials involving both traditional SCS and newer stimulation paradigms to provide an overview of the current state of affairs of this rapidly-growing field

Case Report: Hemorrhage into an Occult Spinal Ependymoma after Epidural Anesthesia

Epidural anesthesia is a procedure which is well tolerated and has a low incidence of adverse events. In performing caesarean sections, regional anesthesia (spinal or epidural) is the preferred modality for anesthetic delivery. Although rare with continuous epidural anesthesia, epidural hematomas have been reported to occur with an incidence between 1:150,000 and 1:190,00010. An underlying bleeding diathesis has been implicated as a causative factor. We present the sixth reported case of hemorrhage into an occult intradural neoplasm after spinal or epidural anesthesia. Similar lesions have not been reported in the recent spine literature

Neurosurgical Applications of Magnetic Resonance Diffusion Tensor Imaging

Magnetic Resonance (MR) Diffusion Tensor Imaging (DTI) is a rapidly evolving technology that enables the visualization of neural fiber bundles, or white matter (WM) tracts. There are numerous neurosurgical applications for MR DTI including: (1) Tumor grading and staging; (2) Pre-surgical planning (determination of resectability, determination of surgical approach, identification of WM tracts at risk); (3) Intraoperative navigation (tumor resection that spares WM damage, epilepsy resection that spares WM damage, accurate location of deep brain stimulation structures); (4) Post-operative assessment and monitoring (identification of WM damage, identification of tumor recurrence). Limitations of MR DTI include difficulty tracking small and crossing WM tracts, lack of standardized data acquisition and post-processing techniques, and practical equipment, software, and timing considerations. Overall, MR DTI is a useful tool for planning, performing, and following neurosurgical procedures, and has the potential to significantly improve patient care. Technological improvements and increased familiarity with DTI among clinicians are next steps