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Writers cramp

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https://www.readbyqxmd.com/read/27773588/differences-in-active-range-of-motion-measurements-in-the-upper-extremity-of-patients-with-writer-s-cramp-compared-with-healthy-controls
#1
Prachaya Srivanitchapoom, Ejaz A Shamim, Pierre Diomi, Takaaki Hattori, Sanjay Pandey, Sherry Vorbach, Jung E Park, Tianxia Wu, Sungyoung Auh, Mark Hallett
STUDY DESIGN: Exploratory case-control study. INTRODUCTION: Writer's cramp (WC) is a type of focal hand dystonia. The central nervous system plays a role in its pathophysiology, but abnormalities in the affected musculoskeletal components may also be relevant. PURPOSE OF THE STUDY: We compared the active range of motion (ROM) in patients with WC and healthy volunteers (HVs) and correlated the findings with disease duration and severity. METHODS: Affected limb joints were measured with goniometers...
February 18, 2016: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/27761228/hereditary-neuropathy-with-liability-to-pressure-palsies-a-single-center-experience-in-southern-brazil
#2
Paulo José Lorenzoni, Cláudia Suemi Kamoi Kay, Cristiane Cavalet, Raquel C Arndt, Lineu Cesar Werneck, Rosana Herminia Scola
The spectrum of clinical and electrophysiological features in hereditary neuropathy with liability to pressure palsies (HNPP) is broad. We analyze a series of Brazilian patients with HNPP. Correlations between clinical manifestations, laboratory features, electrophysiological analyze, histological and molecular findings were done. In five cases, more than one episode occurred before diagnosis. Median nerve in the carpal tunnel at the wrist, ulnar nerve in its groove at the elbow, fibular nerve in the head of the fibula at the knee, radial nerve in its groove of the humerus and suprascapular nerve in its notch at the supraspinous fossa were found as focal neuropathies...
September 30, 2016: Neurology International
https://www.readbyqxmd.com/read/27696930/dopamine-drd2-polymorphism-drd2-annk1-taq1a-is-not-a-significant-risk-factor-in-writer-s-cramp
#3
Kirsten E Zeuner, Albert Acewicz, Arne Knutzen, Dirk Dressler, Katja Lohmann, Karsten Witt
Writers' cramp is a movement disorder with dystonic co-contraction of fingers and hand during writing and is part of the clinical spectrum of focal dystonias. Previous studies showed reduced striatal dopamine receptor D2 (DRD2) availability in dystonia. The expression of D2 receptors is modulated by a DRD2/ANKK1-Taq1A polymorphism (rs1800497). This study addresses the question of whether the DRD2/ANKK1-Taq1A polymorphism is a risk factor for writer's cramp. We determined the DRD2/ANKK1-Taq1A polymorphism 34 patients with writer's cramp compared to 67 age matched controls...
October 4, 2016: Journal of Neurogenetics
https://www.readbyqxmd.com/read/27695243/writer-s-cramp-in-spinocerebellar-ataxia-type-1
#4
Geeta Anjum Khwaja, Abhilekh Srivastava, Vijay Vishwanath Ghuge, Neera Chaudhry
Dystonia can be encountered in a small subset of patients with spinocerebellar ataxia (SCA), but task specific dystonia is extremely rare. We report a case of a 48-year-old male with confirmed SCA Type 1 (SCA1) with mild progressive cerebellar ataxia and a prominent and disabling Writer's cramp. This case highlights the ever-expanding phenotypic heterogeneity of the SCA's in general and SCA1 in particular.
October 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/27693997/mental-rotation-and-working-memory-in-musicians-dystonia
#5
Roberto Erro, Stephanie T Hirschbichler, Lucia Ricciardi, Agata Ryterska, Elena Antelmi, Christos Ganos, Carla Cordivari, Michele Tinazzi, Mark J Edwards, Kailash P Bhatia
BACKGROUND: Mental rotation of body parts engages cortical-subcortical areas that are actually involved in the execution of a movement. Musicians' dystonia is a type of focal hand dystonia that is grouped together with writer's cramp under the rubric of "occupational dystonia", but it is unclear to which extent these two disorders share common pathophysiological mechanisms. Previous research has demonstrated patients with writer's cramp to have deficits in mental rotation of body parts...
September 28, 2016: Brain and Cognition
https://www.readbyqxmd.com/read/27625900/predicting-improvement-in-writer-s-cramp-symptoms-following-botulinum-neurotoxin-injection-therapy
#6
Mallory Jackman, Mehdi Delrobaei, Fariborz Rahimi, S Farokh Atashzar, Mahya Shahbazi, Rajni Patel, Mandar Jog
INTRODUCTION: Writer's cramp is a specific focal hand dystonia causing abnormal posturing and tremor in the upper limb. The most popular medical intervention, botulinum neurotoxin type A (BoNT-A) therapy, is variably effective for 50-70% of patients. BoNT-A non-responders undergo ineffective treatment and may experience significant side effects. Various assessments have been used to determine response prediction to BoNT-A, but not in the same population of patients. METHODS: A comprehensive assessment was employed to measure various symptom aspects...
2016: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/27552765/haptic-feedback-manipulation-during-botulinum-toxin-injection-therapy-for-focal-hand-dystonia-patients-a-possible-new-assistive-strategy
#7
S Farokh Atashzar, Mahya Shahbazi, Christopher Ward, Olivia Samotus, Mehdi Delrobaei, Fariborz Rahimi, Jack Lee, Mallory Jackman, Mandar Jog, Rajni Patel
Abnormality of sensorimotor integration in the basal ganglia and cortex has been reported in the literature for patients with task-specific focal hand dystonia (FHD). In this study, we investigate the effect of manipulation of kinesthetic input in people living with writer's cramp disorder (a major form of FHD). For this purpose, severity of dystonia is studied for 11 participants while the symptoms of 7 participants have been tracked during 5 sessions of assessment and Botulinum toxin injection (BoNT-A) therapy (one of the current suggested therapies for dystonia)...
August 19, 2016: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/27466043/impairment-of-a-parieto-premotor-network-specialized-for-handwriting-in-writer-s-cramp
#8
Cecile Gallea, Silvina G Horovitz, Muslimah 'Ali Najee-Ullah, Mark Hallett
Handwriting with the dominant hand is a highly skilled task singularly acquired in humans. This skill is the isolated deficit in patients with writer's cramp (WC), a form of dystonia with maladaptive plasticity, acquired through intensive and repetitive motor practice. When a skill is highly trained, a motor program is created in the brain to execute the same movement kinematics regardless of the effector used for the task. The task- and effector-specific symptoms in WC suggest that a problem particularly occurs in the brain when the writing motor program is carried out by the dominant hand...
December 2016: Human Brain Mapping
https://www.readbyqxmd.com/read/27172923/pallidotomy-for-writer-s-cramp-after-failed-thalamotomy
#9
Shiro Horisawa, Shinichi Goto, Nobuhiko Takeda, Yuki Takano, Takakazu Kawamata, Takaomi Taira
BACKGROUND/AIMS: Although many reports have confirmed the effects of stereotactic thalamotomy for writer's cramp, pallidotomy for writer's cramp is yet to be investigated. METHODS: After a 22-year-old woman with writer's cramp had undergone stereotactic thalamotomy twice, symptomatic relief was only temporary. Because her dystonic symptoms spread around the proximal part of the upper limb, she underwent unilateral pallidotomy 21 months after the second thalamotomy...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27114174/the-cortical-processing-of-sensorimotor-sequences-is-disrupted-in-writer-s-cramp
#10
N Langbour, V Michel, B Dilharreguy, D Guehl, M Allard, P Burbaud
Evidence for pre-existing abnormalities in the sensory and motor systems has been previously reported in writer's cramp (WC). However, the processing of somatosensory information during motor planning has received little attention. We hypothesized that sensorimotor integration processes might be impaired partly due to a disruption in the parieto-premotor network. To test this assumption, we designed 2 nonwriting motor tasks in which subjects had to perform a 4-finger motor sequence either on the basis of sensory stimuli previously memorized (SM task) or freely generated (SG task)...
April 24, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/27029444/-efficacy-and-safety-of-transcranial-magnetic-stimulation-in-the-treatment-of-rare-forms-of-muscular-dystonia
#11
S A Likhachev, T N Chernukha, G V Zabrodets, O V Gleb
OBJECTIVE: To evaluate the efficacy and safety of repetitive transcranial magnetic stimulation (rTMS) for the treatment of patients with dystonia. MATERIAL AND METHODS: Authors treated 66 patients with segmental and generalized forms of dystonia, writer's cramp and oromandibular dystonia. The degree of dystonia severity was assessed using the Burke--Fahn--Marsden scale. RESULTS AND CONCLUSION: rTMS treatment of the motor cortex region decreased dystonic hyperkinesis severity...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/27000094/behavioural-interventions-for-people-living-with-adult-onset-primary-dystonia-a-systematic-review
#12
REVIEW
C J Bernstein, D R Ellard, G Davies, E Hertenstein, N K Y Tang, M Underwood, H Sandhu
BACKGROUND: Primary dystonia is a chronic neurological movement disorder that causes abnormal muscle movements. Pain and emotional distress may accompany these physical symptoms. Behavioural interventions are used to help people with long term conditions improve their quality of life. Little is known about behavioural interventions applied to Dystonia. We report a systematic review of studies reporting current evidence of behavioural interventions for people with primary dystonia. METHODS: We did systematic searches of Medline, PsycINFO, AHMED and CINAHL...
2016: BMC Neurology
https://www.readbyqxmd.com/read/26923523/abnormal-interhemispheric-inhibition-in-musician-s-dystonia-trait-or-state
#13
Tobias Bäumer, Alexander Schmidt, Marcus Heldmann, Moritz Landwehr, Anna Simmer, Diana Tönniges, Thomas Münte, Katja Lohmann, Eckart Altenmüller, Christine Klein, Alexander Münchau
INTRODUCTION: A clustering of relatives with dystonia has been reported in families with musician's dystonia suggesting a genetic contribution to this disease. The aim of the present study was to determine whether interhemispheric inhibition (IHI) measured with transcranial magnetic stimulation is impaired in healthy family members rendering it a suitable endophenotypic marker for musician's dystonia. METHODS: Patients with musician's hand dystonia (n = 21), patients with sporadic writer's cramp (n = 15), their healthy family members (n = 27), healthy musicians (n = 12) and healthy non-musicians (n = 12) were included...
April 2016: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/26891751/kinematic-and-kinetic-assessment-of-upper-limb-movements-in-patients-with-writer-s-cramp
#14
Mehdi Delrobaei, Fariborz Rahimi, Mallory E Jackman, S Farokh Atashzar, Mahya Shahbazi, Rajni Patel, Mandar Jog
BACKGROUND: The assessment and treatment of writer's cramp is complicated due to the variations in the forces and angles of involved joints. Additionally, in some cases compensatory movements for cramp relief further complicates assessment. Currently these variables are subjectively measured with clinical scales and visual assessments. This subjectivity makes it difficult to successfully administer interventions such as Botulinum toxin injection or orthotics resulting in poor efficacy and significant side effects...
2016: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/26839735/reduced-functional-connectivity-of-somatosensory-network-in-writer-s-cramp-patients
#15
Chia-Hsiung Cheng, Yi-Jhan Tseng, Rou-Shayn Chen, Yung-Yang Lin
BACKGROUND: The involvement of motor cortex and sensorimotor integration in patients with writer's cramp (WC) has been well documented. However, the exact neurophysiological profile within the somatosensory system, including primary somatosensory cortex (SI), contralateral (SIIc), and ipsilateral (SIIi) secondary somatosensory areas remains less understood. METHODS: This study investigated the neuromagnetic cortical activities of median nerve stimulation in 10 patients with WC and 10 healthy controls (HC)...
March 2016: Brain and Behavior
https://www.readbyqxmd.com/read/26788335/writer-s-cramp-as-a-presentation-of-l-2-hydroxyglutaric-aciduria
#16
Pichet Termsarasab, Steven J Frucht
L-2-hydroxyglutaric aciduria (L2HGA) is a neurometabolic disorder characterized by macrocephaly, seizures, progressive mental retardation, pyramidal signs, ataxia and tremor. Dystonia is an under-recognized feature of this entity in the literature. We report two siblings with L2HGA, one of whom presented with writer's cramp followed by dystonia of the other hand. An elevated plasma lysine, highly elevated urine 2-hydroxyglutaric acid, and MRI with characteristic findings (leukoencephalopathy of bilateral subcortical white matter sparing central white matter) suggested the diagnosis, which was confirmed by genetic testing...
2014: Journal of Clinical Movement Disorders
https://www.readbyqxmd.com/read/26702397/altered-brain-activation-in-a-reversal-learning-task-unmasks-adaptive-changes-in-cognitive-control-in-writer-s-cramp
#17
Kirsten E Zeuner, Arne Knutzen, Oliver Granert, Simone Sablowsky, Julia Götz, Stephan Wolff, Olav Jansen, Dirk Dressler, Susanne A Schneider, Christine Klein, Günther Deuschl, Thilo van Eimeren, Karsten Witt
Previous receptor binding studies suggest dopamine function is altered in the basal ganglia circuitry in task-specific dystonia, a condition characterized by contraction of agonist and antagonist muscles while performing specific tasks. Dopamine plays a role in reward-based learning. Using fMRI, this study compared 31 right-handed writer's cramp patients to 35 controls in reward-based learning of a probabilistic reversal-learning task. All subjects chose between two stimuli and indicated their response with their left or right index finger...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/26687111/the-clinical-phenotype-of-early-onset-isolated-dystonia-caused-by-recessive-col6a3-mutations-dyt27
#18
Angela Jochim, Michael Zech, Gina Gora-Stahlberg, Juliane Winkelmann, Bernhard Haslinger
BACKGROUND AND PURPOSE: We recently identified mutations in the a3 (VI) collagen gene COL6A3 that cause autosomal-recessive isolated dystonia (DYT27). This article gives a detailed description of the clinical phenotype associated with this new type of dystonia. METHODS: A total of 5 recessive COL6A3 mutation carriers underwent clinical examinations, and case histories were recorded on videotape. RESULTS: Biallelic COL6A3 mutations cause isolated dystonia with interindividual heterogeneity of distribution and severity...
May 2016: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/26391286/writer-s-cramp
#19
REVIEW
Jennifer G Goldman
Writer's cramp is the most common form of focal, task-specific dystonia. Symptoms frequently evolve in the setting of repetitive hand movements and increased writing demands, and clinical presentations demonstrate a variety of different dystonic patterns of the upper extremity such as while writing or holding a writing utensil. However, why writer's cramp develops still remains much of a mystery. Clinical evaluation of patients with writer's cramp and various theories regarding its pathophysiology are reviewed...
December 1, 2015: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/26132164/dysgraphia-as-a-mild-expression-of-dystonia-in-children-with-absence-epilepsy
#20
Renzo Guerrini, Federico Melani, Claudia Brancati, Anna Rita Ferrari, Paola Brovedani, Annibale Biggeri, Laura Grisotto, Simona Pellacani
BACKGROUND: Absence epilepsy (AE) is etiologically heterogeneous and has at times been associated with idiopathic dystonia. OBJECTIVES: Based on the clinical observation that children with AE often exhibit, interictally, a disorder resembling writer's cramp but fully definable as dysgraphia, we tested the hypothesis that in this particular population dysgraphia would represent a subtle expression of dystonia. METHODS: We ascertained the prevalence of dysgraphia in 82 children with AE (mean age 9...
2015: PloS One
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