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Surgery for movement disorders

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https://www.readbyqxmd.com/read/29625464/safety-studies-for-a-44-channel-suprachoroidal-retinal-prosthesis-a-chronic-passive-study
#1
Carla J Abbott, David A X Nayagam, Chi D Luu, Stephanie B Epp, Richard A Williams, Cesar M Salinas-LaRosa, Joel Villalobos, Ceara McGowan, Mohit N Shivdasani, Owen Burns, Jason Leavens, Jonathan Yeoh, Alice A Brandli, Patrick C Thien, Jenny Zhou, Helen Feng, Chris E Williams, Robert K Shepherd, Penelope J Allen
Purpose: Following successful clinical outcomes of the prototype suprachoroidal retinal prosthesis, Bionic Vision Australia has developed an upgraded 44-channel suprachoroidal retinal prosthesis to provide a wider field of view and more phosphenes. The aim was to evaluate the preclinical passive safety characteristics of the upgraded electrode array. Methods: Ten normal-sighted felines were unilaterally implanted with an array containing platinum electrodes (44 stimulating and 2 returns) on a silicone carrier near the area centralis...
March 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29503333/newer-advances-in-lesional-surgery-for-movement-disorders
#2
Milind Sankhe, Omkar Churi
An analysis of the existing literature on lesioning for movement disorders was undertaken to review lesion therapy and its advances. Advances in imaging technology and electrophysiological techniques used for localization of brain structures and its functions, such as microelectrode recordings and macrostimulation, have greatly improved the ability to accurately identify the target nuclei such as the ventrointermediate nucleus (Vim), globus pallidus interna (GPi) and subthalamic nucleus (STN). Many important changes are happening in the understanding of lesion making...
March 2018: Neurology India
https://www.readbyqxmd.com/read/29503327/dystonia-a-review
#3
REVIEW
Amit Batla
Dystonia is a hyperkinetic movement disorder characterized by sustained or intermittent muscle contractions that cause abnormal repetitive movements, abnormal postures, or both. The new consensus classifies dystonia into two axes to characterize clinical characteristics, and etiology. This system allows correct identification of isolated and combined forms of dystonia and retains the description of generalized and focal dystonia which is very useful in planning investigations and management. The characterization of dystonia for its better identification and a brief overview of its management are discussed in this article...
March 2018: Neurology India
https://www.readbyqxmd.com/read/29492131/chronic-subdural-hematoma-associated-with-fahr-syndrome-a-clinical-association-or-just-a-simple-coincidence
#4
Oktay Gurcan, Ahmet Gurhan Gurcay, Atilla Kazanci, Tuncer Goker, Oguzhan Eylen, Omer Faruk Turkoglu
The Fahr syndrome (FS) is a rare degenerative neurological disorder (its prevalence is <0.5%). FS is distinguished by the presence of abnormal bilateral intracranial calcifications with a predilection for the basal ganglia, also presented by movement disorders such as parkinsonism, paresis, and speech disorders. Chronic subdural hematoma (CSH), which is typically the result of mild head trauma, is a regularly encountered condition in elderly. A 63-year-old man has referred to our clinic from another hospital with a history of mild head trauma approximately a month ago...
January 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29487645/bilateral-coronoid-hyperplasia-causing-painless-limitation-of-mandibular-movement
#5
Maryam Ghazizadeh, Mahnaz Sheikhi, Mohammad Mahdi Salehi, Amin Khaleghi
The coronoid process is a beaklike process in the ramus of the mandible. Coronoid process hyperplasia (CPH) is a rare possible cause of reduced mouth opening. An overgrown process interferes with mandibular rotation and lateral excursion and hence leads to restricted mouth opening (RMO). Although some factors are suggested, etiology of CPH is not completely known. Prescription of suitable radiography is necessary for an accurate diagnosis. This article reports a 30-year-old man with bilateral CPH and progressive RMO since childhood...
February 2018: Radiology Case Reports
https://www.readbyqxmd.com/read/29473781/prediction-of-depression-and-anxiety-via-patient-assessed-tremor-severity-not-physician-reported-motor-symptom-severity-in-patients-with-parkinson-s-disease-or-essential-tremor-who-have-undergone-deep-brain-stimulation
#6
Rebecca L Achey, Erin Yamamoto, Daniel Sexton, Christine Hammer, Bryan S Lee, Robert S Butler, Nicolas R Thompson, Sean J Nagel, Andre G Machado, Darlene A Lobel
OBJECTIVE Deep brain stimulation (DBS) is an effective therapy for movement disorders such as idiopathic Parkinson's disease (PD) and essential tremor (ET). However, some patients who demonstrate benefit on objective motor function tests do not experience postoperative improvement in depression or anxiety, 2 important components of quality of life (QOL). Thus, to examine other possible explanations for the lack of a post-DBS correlation between improved objective motor function and decreased depression or anxiety, the authors investigated whether patient perceptions of motor symptom severity might contribute to disease-associated depression and anxiety...
February 23, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29473778/assessment-of-the-praxis-circuit-in-glioma-surgery-to-reduce-the-incidence-of-postoperative-and-long-term-apraxia-a-new-intraoperative-test
#7
Marco Rossi, Luca Fornia, Guglielmo Puglisi, Antonella Leonetti, Gianmarco Zuccon, Enrica Fava, Daniela Milani, Alessandra Casarotti, Marco Riva, Federico Pessina, Gabriella Cerri, Lorenzo Bello
OBJECTIVE Apraxia is a cognitive-motor deficit affecting the execution of skilled movements, termed praxis gestures, in the absence of primary sensory or motor disorders. In patients affected by stroke, apraxia is associated with lesions of the lateral parietofrontal stream, connecting the posterior parietal areas with the ventrolateral premotor area and subserving sensory-motor integration for the hand movements. In the neurosurgical literature to date, there are few reports regarding the incidence of apraxia after glioma surgery...
February 23, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29442369/spinal-cord-stimulation-therapy-for-gait-dysfunction-in-advanced-parkinson-s-disease-patients
#8
Olivia Samotus, Andrew Parrent, Mandar Jog
BACKGROUND: Benefits of dopaminergic therapy and deep brain stimulation are limited and unpredictable for axial symptoms in Parkinson's disease. Dorsal spinal cord stimulation may be a new therapeutic approach. The objective of this study was to investigate the therapeutic effect of spinal cord stimulation on gait including freezing of gait in advanced PD patients. METHODS: Five male PD participants with significant gait disturbances and freezing of gait underwent midthoracic spinal cord stimulation...
February 14, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29427344/directional-communication-during-movement-execution-interferes-with-tremor-in-parkinson-s-disease
#9
Georgios Naros, Florian Grimm, Daniel Weiss, Alireza Gharabaghi
BACKGROUND: Both the cerebello-thalamo-cortical circuit and the basal ganglia/cortical motor loop have been postulated to be generators of tremor in PD. The recent suggestion that the basal ganglia trigger tremor episodes and the cerebello-thalamo-cortical circuitry modulates tremor amplitude combines both competing hypotheses. However, the role of the STN in tremor generation and the impact of proprioceptive feedback on tremor suppression during voluntary movements have not been considered in this model yet...
February 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29423886/paraplegic-patients-how-to-measure-balance-and-what-is-normal-or-functional
#10
REVIEW
Kaku Barkoh, Joshua W Lucas, Larry Lee, Patrick C Hsieh, Jeffrey C Wang, Kevin Rolfe
PURPOSE: To review the current understanding and data of sagittal balance and alignment considerations in paraplegic patients. METHODS: A PubMed literature search was conducted to identify all relevant articles relating to sagittal alignment and sagittal balance considerations in paraplegic and spinal cord injury patients. RESULTS: While there are numerous studies and publications on sagittal balance in the ambulatory patient with spinal deformity or complex spine disorders, there is paucity of the literature on "normal" sagittal balance in the paraplegic patients...
February 8, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29414403/postoperative-rehabilitation-after-deep-brain-stimulation-surgery-for-movement-disorders
#11
REVIEW
Niels Allert, Binith Cheeran, Günther Deuschl, Michael T Barbe, Ilona Csoti, Markus Ebke, Martin Glaser, Jun-Suk Kang, Stefan Kelm, Paul Krack, Julia Kroth, Ulrich Jobst, Markus Leisse, Antonio Oliviero, Peter Nikolaus Nolte, Johanna Quick-Weller, Martin Strothjohann, Gertrúd Tamás, Michael Werner, Muthuraman Muthuraman, Jens Volkmann, Alfonso Fasano, Sergiu Groppa
Deep brain stimulation (DBS) is a highly efficient, evidence-based therapy for a set of neurological and psychiatric conditions and especially movement disorders such as Parkinson's disease, essential tremor and dystonia. Recent developments have improved the DBS technology. However, no unequivocal algorithms for an optimized postoperative care exist so far. The aim of this review is to provide a synopsis of the current clinical practice and to propose guidelines for postoperative and rehabilitative care of patients who undergo DBS...
March 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29396058/stuttering-in-parkinson-s-disease-after-deep-brain-stimulation-a-note-on-dystonia-and-low-frequency-stimulation
#12
Marcelo D Mendonça, Raquel Barbosa, Alexandra Seromenho-Santos, Carla Reizinho, Paulo Bugalho
Stuttering, a speech fluency disorder, is a rare complication of Deep Brain Stimulation (DBS) in Parkinson's Disease (PD). We report a 61 years-old patient with PD, afflicted by severe On and Off dystonia, treated with Subthalamic Nucleus DBS that developed post-DBS stuttering while on 130 Hz stimulation. Stuttering reduction was noted when frequency was changed to 80 Hz, but the previously observed dystonia improvement was lost. There are no reports in literature on patients developing stuttering with low-frequency stimulation...
January 26, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29385927/preliminary-experience-with-a-transcranial-magnetic-resonance-guided-focused-ultrasound-surgery-system-integrated-with-a-1-5-t-mri-unit-in-a-series-of-patients-with-essential-tremor-and-parkinson-s-disease
#13
Domenico Gerardo Iacopino, Cesare Gagliardo, Antonella Giugno, Giuseppe Roberto Giammalva, Alessandro Napoli, Rosario Maugeri, Francesca Graziano, Francesca Valentino, Giuseppe Cosentino, Marco D'Amelio, Tommaso Vincenzo Bartolotta, Carlo Catalano, Brigida Fierro, Massimo Midiri, Roberto Lagalla
OBJECTIVE Transcranial magnetic resonance-guided focused ultrasound surgery (tcMRgFUS) is one of the emerging noninvasive technologies for the treatment of neurological disorders such as essential tremor (ET), idiopathic asymmetrical tremor-dominant Parkinson's disease (PD), and neuropathic pain. In this clinical series the authors present the preliminary results achieved with the world's first tcMRgFUS system integrated with a 1.5-T MRI unit. METHODS The authors describe the results of tcMRgFUS in a sample of patients with ET and with PD who underwent the procedure during the period from January 2015 to September 2017...
February 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29362998/cancer-associated-retinopathy-after-surgery-for-breast-cancer-a-case-report-and-review-of-the-literature
#14
Mirei Kamei, Yutaka Fujitomi, Yoshiyuki Kondo, Toru Adachi, Kohei Shibata, Yohei Takumi, Miyuki Abe, Kenji Sugio
We herein report a 50-year-old Japanese woman with breast cancer who complained of blurred vision and central scotoma in her left eye on the 12th day after surgery. Subsequently, the sudden-onset binocular visual disorder progressed, and she was diagnosed with cancer-associated retinopathy (CAR) based on the clinical findings. Although her visual acuity temporarily improved following the start of adjuvant chemotherapy, reductions in her visual acuity progressed once again. After two courses of steroid pulse therapy initiated from the 59th day following the onset of CAR, although her visual field was still constricted, her binocular visual acuity improved from finger movement to 0...
January 23, 2018: Surgical Case Reports
https://www.readbyqxmd.com/read/29354738/inpatient-morbidity-after-spinal-deformity-surgery-in-patients-with-movement-disorders
#15
Rafael De la Garza Ramos, C Rory Goodwin, Amit Jain, Daniel Martinez-Ramirez, Isaac O Karikari, Daniel M Sciubba
Background: To investigate the inpatient perioperative morbidity rate of patients with movement disorders (MD) after spinal deformity surgery. Methods: The Nationwide Inpatient Sample database from 2002 to 2011 was queried to identify adult patients with MD who underwent spinal deformity surgery. Complication rates were compared between patients with MD and controls. A multiple logistic regression analysis was conducted to assess the effect of MD on outcome. Results: A total of 365 patients with MD (3...
December 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29332078/magnetic-resonance-guided-high-intensity-focused-ultrasound-for-treating-movement-disorders
#16
Young Goo Kim, Eun Jung Kweon, Won Seok Chang, Hyun Ho Jung, Jin Woo Chang
Transcranial magnetic resonance-guided focused ultrasound (MRgFUS) surgery has recently gained favor as a novel, noninvasive alternative to conventional neurosurgery. In contrast to traditional ablative interventions, transcranial MRgFUS surgery is entirely imaging-guided and uses continuous temperature measurements at the target and surrounding tissue taken in real-time. Unlike Gamma Knife radiosurgery, MRgFUS surgery can make a lesion immediately and does not use ionizing radiation. Moreover, since no metallic device is implanted, MR imaging-based diagnosis is not restricted throughout life...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29332075/patient-evaluation-and-selection-for-movement-disorders-surgery-the-changing-spectrum-of-indications
#17
Steffen Paschen, Günther Deuschl
This report summarizes the state-of-the-art and controversies around patient selection for deep brain stimulation (DBS) for various conditions. Parkinson's disease (PD): several class I studies have shown superiority of DBS over best medical treatment for advanced PD with fluctuations and further inclusion criteria. One class I study suggests that PD patients with early motor complications might gain more quality of life if operated within 3 years after the onset of fluctuations. The subthalamic nucleus (STN) is still the standard target...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29332072/medical-management-of-movement-disorders
#18
Marina Picillo, Renato P Munhoz
Pharmacological treatment is the cornerstone in the management of movement disorders. Although most available treatment options have no impact on the underlying process of each movement disorder, symptomatic therapies can significantly improve patient's quality of life and level of disability. Here, we review the current knowledge on clinical symptomatic management of Parkinson's disease (both early and advanced stages), essential tremor, dystonia, and chorea. Ideally, treatment should be carried out by specialists with reasonable experience in movement disorders, as it needs to be tailored for each patient depending on several appraisals, including but not limited to patients' needs, compliance issues, potential side effects, caregiver support, and presence of comorbidities...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29332069/the-history-of-movement-disorder-brain-surgery
#19
L Dade Lunsford, Ajay Niranjan
The first surgical procedures for abnormal movement disorders began in the 1930s, when surgeons first proposed ablative techniques of the caudate nucleus or transection of motor (pyramidal) pathways to reduce involuntary movements in patients with Parkinson's related tremor. During the 50-year interval between 1945 and 1995, the development of precise intracranial guiding devices, brain maps, and advanced imaging led to the refinement of appropriate deep brain targets affecting extrapyramidal pathways. Lesional surgery and subsequent neuroaugmentation using deep brain stimulation extended the role of deep brain surgery for a wider group of patients with tremor, rigidity, dyskinesia, and other involuntary movement disorders...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29316056/rechargeable-internal-pulse-generators-as-initial-neurostimulators-for-deep-brain-stimulation-in-patients-with-movement-disorders
#20
Martin Jakobs, Manja Kloß, Andreas Unterberg, Karl Kiening
INTRODUCTION: Rechargeable internal pulse generators (r-IPGs) for deep brain stimulation (DBS) promise a longer battery life and cost effectiveness compared to non-rechargeable IPGs. However, patients need to learn to check the battery capacity and perform the recharging process to ensure continuous therapy. METHODS: n = 35 consecutive adult patients with movement disorders that underwent DBS electrode placement with implantation of a r-IPG were assessed with a questionnaire...
January 8, 2018: Neuromodulation: Journal of the International Neuromodulation Society
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