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https://www.readbyqxmd.com/read/27725721/time-course-of-coherence-in-the-human-basal-ganglia-during-voluntary-movements
#1
Omid Talakoub, Bogdan Neagu, Kaviraja Udupa, Eric Tsang, Robert Chen, Milos R Popovic, Willy Wong
We are interested in characterizing how brain networks interact and communicate with each other during voluntary movements. We recorded electrical activities from the globus pallidus pars interna (GPi), subthalamic nucleus (STN) and the motor cortex during voluntary wrist movements. Seven patients with dystonia and six patients with Parkinson's disease underwent bilateral deep brain stimulation (DBS) electrode placement. Local field potentials from the DBS electrodes and scalp EEG from the electrodes placed over the motor cortices were recorded while the patients performed externally triggered and self-initiated movements...
October 11, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27663053/incidence-and-risk-factors-for-volar-wrist-ganglia-in%C3%A2-the-u-s-military-and-civilian-populations
#2
George C Balazs, Theodora C Dworak, Jordan Tropf, George P Nanos, Scott M Tintle
PURPOSE: To identify the incidence and demographic factors associated with volar wrist ganglia in both military and civilian beneficiary populations. METHODS: The U.S. Department of Defense Management Analysis and Reporting Tool (M2) accesses a comprehensive database of all health care visits by military personnel and their dependents. Because there is no specific code for ganglions of the wrist, the database was searched for all military personnel and civilian beneficiaries with an International Classification of Diseases, 9th Revision, diagnosis of 727...
September 20, 2016: Journal of Hand Surgery
https://www.readbyqxmd.com/read/27588074/therapeutic-effect-of-bone-cement-injection-in-the-treatment-of-intraosseous-ganglion-of-the-carpal-bones
#3
Kunlun Yu, Xinzhong Shao, Dehu Tian, Jiangbo Bai, Bing Zhang, Yingze Zhang
The aim of the present study was to treat intraosseous ganglia of the carpal bones with injectable bone cement grafting. Between January 2012 and December 2013, 4 patients (3 men and 1 woman) presenting with wrist pain and activity limitation were diagnosed with intraosseous ganglion of the carpal bones by radiography. The patients were treated with minimal invasive curettage and bone cement injection surgery. All patients were followed up for a mean time of 17 months (range, 12-22 months). The wrist pain was significantly reduced in all patients following surgery...
September 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27535671/arthroscopic-resection-of-occult-dorsal-wrist-ganglia
#4
Nicola Borisch
INTRODUCTION: Arthroscopic resection of dorsal wrist ganglia has become a well-accepted practice. However, there is a paucity of results on occult ganglia in the literature. The purpose of this study is to evaluate the subjective outcomes of occult dorsal wrist ganglion cysts resected arthroscopically, and to identify and examine intraarticular findings and relate them to pre-operative MRI findings and histologies. MATERIALS AND METHODS: In 39 patients, 40 wrists were treated with arthroscopic resection of an occult dorsal wrist ganglion...
October 2016: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/27464871/omitting-histopathology-in-wrist-ganglions-a-risky-proposition
#5
Akbar J Zubairi, Santosh Kumar, Yasir Mohib, Rizwan H Rashid, Shahryar Noordin
OBJECTIVES: To identify incidence and utility of histopathology in wrist ganglions.  METHODS: A retrospective study of 112  patients operated for wrist swellings between January 2009 and March 2014 at Aga Khan University Hospital, Karachi, Pakistan, was conducted. Medical records were reviewed for demographics, history, location and associated symptoms, provisional diagnosis and operative details. Histopathology reports were reviewed to confirm the final diagnosis...
August 2016: Saudi Medical Journal
https://www.readbyqxmd.com/read/27355280/ultrasonography-for-hand-and-wrist-conditions
#6
Harlan M Starr, Matthew D Sedgley, Kenneth R Means, Michael S Murphy
Ultrasonography facilitates dynamic, real-time evaluation of bones, joints, tendons, nerves, and vessels, making it an ideal imaging modality for hand and wrist conditions. Ultrasonography can depict masses and fluid collections, help locate radiolucent foreign bodies, characterize traumatic or overuse tendon or ligament pathology, and help evaluate compressive peripheral neuropathy and microvascular blood flow. Additionally, this modality improves the accuracy of therapeutic intra-articular or peritendinous injections and facilitates aspiration of fluid collections, such as ganglia...
August 2016: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27138607/considerations-in-performing-open-surgical-excision-of-dorsal-wrist-ganglion-cysts
#7
Jin Young Kim, Jangyun Lee
PURPOSE: To investigate which conditions should be considered to make a successful resection of the entire ganglion complex during open excision. METHODS: We reviewed 52 patients who underwent open surgical excision of dorsal wrist ganglions. The inclusion criterion was a symptomatic ganglion causing pain, weakness and limitation of range of motion. The mean follow-up was 26 (range 12-45) months. We recorded operative details including whether or not the stalk was identified, how the ganglia were resected, and where the stalk originated...
September 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27074739/-arthroscopic-resection-of-dorsal-wrist-ganglion-cysts
#8
N Borisch
OBJECTIVE: Pain relief and improvement of hand function by ganglion cyst resection and/or creation of a dorsal capsular window with partial synovectomy. In the case of visible ganglion cysts consideration of aesthetic aspects. INDICATIONS: Visible and occult persisting dorsal wrist ganglion cysts, recurrent ganglion cyst after open or arthroscopic resection and intraosseous ganglion cyst with an extraosseous portion. CONTRAINDICATIONS: Recent skin lesion of the wrist...
August 2016: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/26968144/targeted-brain-activation-using-an-mr-compatible-wrist-torque-measurement-device-and-isometric-motor-tasks-during-functional-magnetic-resonance-imaging
#9
Martijn P Vlaar, Winfred Mugge, Paul F C Groot, Sarvi Sharifi, Lo J Bour, Frans C T van der Helm, Anne-Fleur van Rootselaar, Alfred C Schouten
Dedicated pairs of isometric wrist flexion tasks, with and without visual feedback of the exerted torque, were designed to target activation of the CBL and BG in healthy subjects during functional magnetic resonance imaging (fMRI). Selective activation of the cerebellum (CBL) and basal ganglia (BG), often implicated in movement disorders such as tremor and dystonia, may help identify pathological changes and expedite diagnosis. A prototyped MR-compatible wrist torque measurement device, free of magnetic and conductive materials, allowed safe execution of tasks during fMRI without causing artifacts...
July 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/26894048/ganglion-cysts-in-the-lateral-portal-region-of-the-knee-after-arthroscopy-report-of-two-cases
#10
Cem Sever, Melih Malkoc, Turker Acar, Faik Turkmen, Ozgur Korkmaz, Onur Oto
A ganglion cyst (GC) is a mucinous or gelatinous-filled benign tumor overlying a joint or tendon sheath, which commonly arises in the dorsal and volar wrist side but may occur anywhere in the body. Although cystic lesions around the knee are common, the occurrence of GCs are rare. Ganglia may arise from intra or extra-articular, soft tissue, intraosseous, or periosteal location. Symptoms may vary according to the size and location. After the more frequent performance of magnetic resonance imaging for the assessment of a knee joint, the number of incidental, asymptomatic lesions have been increasingly diagnosed...
October 2015: Autopsy & case reports
https://www.readbyqxmd.com/read/26737028/wrist-rigidity-assessment-during-deep-brain-stimulation-surgery
#11
Pedro Costa, Maria José Rosas, Rui Vaz, João Paulo Cunha
Parkinson's Disease (PD) patients often need Deep Brain Stimulation (DBS) surgery when they become intolerant to drugs or these lose efficiency. A stimulation electrode is implanted in the basal ganglia to promote the functional control of the deregulated dopaminergic motor pathways. The stimulation target is defined by medical imaging, followed by electrophysiological inspection for fine electrode position trimming and electrical stimulation tuning. Intra-operative stimulation of the target and the evaluation of wrist rigidity allows to choose the stimulation parameters which best alleviate PD symptoms without side effects...
2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/26071901/pre-movement-gating-of-somatosensory-evoked-potentials-in-segawa-disease
#12
Kazue Kimura, Yuri Nagao, Kei Hachimori, Masaharu Hayashi, Yoshiko Nomura, Masaya Segawa
INTRODUCTION: Segawa disease (SD), an autosomal dominant dopa-responsive dystonia with marked diurnal fluctuation, can be clinically classified into the postural dystonia type (SD-P) and action dystonia type (SD-A). Compared to SD-A, SD-P has an earlier onset and is characterized by postural dystonia. In SD-A, along with postural dystonia, dystonic movements appear in late childhood. To evaluate the differences between these two types of SD, we studied the gating of SEPs, which is useful to investigate sensory-motor integration and might be one of the methods to detect the thalamo-cortical involvement...
January 2016: Brain & Development
https://www.readbyqxmd.com/read/26018034/work-related-etiology-of-de-quervain-s-tenosynovitis-a-case-control-study-with-prospectively-collected-data
#13
Stéphane Stahl, Daniel Vida, Christoph Meisner, Adelana Santos Stahl, Hans-Eberhard Schaller, Manuel Held
BACKGROUND: The etiology of de Quervain's tenosynovitis (dQ) has been based on conflicting small case series and cohort studies lacking methodological rigor. A prospective case-control study was conducted to analyze the most common risk factors for dQ. METHODS: Between January 2003 and May 2011, 189 patients surgically treated for dQ vs. 198 patients with wrist ganglia (WG) (controls) were identified in our clinic's electronic database. Sample characteristics, exertional, anatomical, and medical risk factors were compared between groups...
2015: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/25831646/treatment-of-ganglions-a-five-year-experience
#14
RANDOMIZED CONTROLLED TRIAL
Ansar Latif, Anila Ansar, Muhammad Qasim Butt
OBJECTIVE: To evaluate and determine the effectiveness of surgical excision, aspiration and injection in the treatment of symptomatic ganglions. METHODS: The prospective randomized control trial based on non-probability convenience sampling was conducted at the Department of Surgery, Combined Military Hospital, Sialkot, from June 2007 to August 2010, and at the Department of Surgery, Islam Teaching Hospital, Sialkot, from September 2010 to December 2012. The last patient was included in June 2012...
November 2014: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/25746454/somatosensory-input-to-non-primary-motor-areas-is-enhanced-during-preparation-of-cued-contraterlateral-finger-sequence-movements
#15
Matt J N Brown, W Richard Staines
Frontal N30 somatosensory evoked potentials (SEPs) represent early somatosensory input into non-primary motor areas. Importantly, modulations of frontal N30 SEPs can provide insight into the mechanisms involved in sensory processing for movement control. Enhancements of frontal N30 SEPs have been revealed during repetitive but not during the preparation of movements that are contralateral to median nerve (MN) stimulation (i.e. contralateral movements). Importantly, these enhancements during contralateral movements may be dependent on increased activity in several neural areas such as the primary motor cortex (M1), supplementary motor area (SMA) and basal ganglia (BG)...
June 1, 2015: Behavioural Brain Research
https://www.readbyqxmd.com/read/25452089/-standard-wrist-arthroscopy-technique-and-documentation
#16
S Löw, A Herold, C Eingartner
OBJECTIVE: Minimally invasive approach to the wrist in order to diagnose and treat different wrist pathologies. INDICATIONS: Diagnosis of unclear chronic pain syndromes, cartilage status, intra-articular ligament structures as well as post-traumatic and inflammatory conditions of the wrist. Treatment of ulnar impaction syndrome, dorsal ganglia and also in fracture treatment and various different wrist interventions. CONTRAINDICATIONS: Soft tissue infections around the wrist, severe scarring may impede access to the joint...
December 2014: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/25418940/-effects-of-spinal-cord-decompression-in-patients-with-cervical-spondylotic-myelopathy-oncortical-brain-activations
#17
L Hrabálek, P Hluštík, P Hok, T Wanek, P Otruba, E Cecháková, M Vaverka, P Kaňovský
INTRODUCTION: The aim of this project was to compare and evaluate cortical sensorimotor adaptations as measured by brain fMRI (functional magnetic resonance imaging) in patients before and after surgery for cervical spondylotic myelopathy (CSM), i.e., after spinal cord decompression. MATERIAL AND METHODS: Study inclusion required evidence of CSM on MRI of the cervical spine, anterior compression of the spinal cord by osteophytes, or disc herniation. We measured the antero-posterior diameter of the spinal canal stenosis before and 3 months after surgery...
November 2014: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/25359001/modulatory-effects-of-movement-sequence-preparation-and-covert-spatial-attention-on-early-somatosensory-input-to-non-primary-motor-areas
#18
Matt J N Brown, W Richard Staines
Early frontal somatosensory evoked potentials (SEPs) (i.e., N30) are known to be modulated by movement. Furthermore, individuals with prefrontal lesions have enhanced early frontal SEPs. However, it is currently unclear through what mechanism the prefrontal cortex may modulate early frontal SEPs. The current study investigated whether prefrontal modulatory effects on frontal SEPs may depend on the relevancy of somatosensory input for movement (i.e., interaction with motor areas). Two experiments were conducted to determine whether selective spatial attention alone (Experiment 1-Attend and Mentally Count) or when using attended somatosensory input in the preparation of finger sequences with the limb contralateral to somatosensory stimulation (Experiment 2-Attend for Movement Preparation) could modulate SEPs...
February 2015: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/25309407/moving-to-music-effects-of-heard-and-imagined-musical-cues-on-movement-related-brain-activity
#19
Rebecca S Schaefer, Alexa M Morcom, Neil Roberts, Katie Overy
Music is commonly used to facilitate or support movement, and increasingly used in movement rehabilitation. Additionally, there is some evidence to suggest that music imagery, which is reported to lead to brain signatures similar to music perception, may also assist movement. However, it is not yet known whether either imagined or musical cueing changes the way in which the motor system of the human brain is activated during simple movements. Here, functional magnetic resonance imaging was used to compare neural activity during wrist flexions performed to either heard or imagined music with self-pacing of the same movement without any cueing...
2014: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/25290273/-arthroscopic-resection-of-dorsal-wrist-ganglia
#20
N Borisch
In arthroscopic wrist surgery, the resection of dorsal wrist ganglia has become a well accepted practice. As advantages for the minimally invasive procedure the low complication rate and low postoperative morbidity, less postoperative pain and faster recovery over open techniques are discussed. The possibility to assess accompanying joint pathology is considered as another advantage. The importance of identifying a so-called ganglion cyst stalk seems to have been overstated. Regarding the technique, the main discussion points are the size and localisation of the capsular window and the necessity of additional midcarpal arthroscopy...
October 2014: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
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