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Tibial nerve stimulation

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https://www.readbyqxmd.com/read/28439675/a-pilot-study-assessing-the-efficacy-of-posterior-tibial-nerve-stimulation-in-the-treatment-of-low-anterior-resection-syndrome
#1
V Vigorita, S Rausei, P Troncoso Pereira, I Trostchansky, A Ruano Poblador, E Moncada Iribarren, C Facal Alvarez, A de San Ildefonso Pereira, E Casal Núñez
BACKGROUND: Low anterior resection for rectal cancer often results in severe bowel dysfunction, specifically low anterior resection syndrome (LARS), with symptoms such as incontinence, urgency, and frequent bowel movements. Percutaneous tibial nerve stimulation (PTNS) resulted in a high rate of success in patients with fecal incontinence. The aim of this study was to evaluate the effectiveness of treatment with PTNS in LARS and to identify predictors of the outcome of the technique. METHODS: The study was conducted from May 2012 to April 2015 at the Alvaro Cunqueiro Hospital, University Hospital Complex of Vigo, Spain...
April 24, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28421392/combination-of-sacral-nerve-and-tibial-nerve-stimulation-for-treatment-of-bladder-overactivity-in-pigs
#2
Xing Li, Limin Liao, Guoqing Chen, Zhaoxia Wang, Han Deng
PURPOSE: Sacral nerve and tibial nerve stimulation have been singly used to treat overactive bladder (OAB). This study evaluated the effects of both combined stimulation on treating bladder overactivity in pigs and explored a novel treatment modality for OAB. METHODS: An implant-driven stimulator of the S3 spinal nerve was implanted in 5 pigs. The contralateral tibial nerve was stimulated by an external stimulator. Multiple cystometrograms were performed to determine the effects of single nerve stimulation and combination sacral nerve stimulation (SNS) and tibial nerve stimulation (TNS) on the micturition reflex by infusing normal saline (NS) or acetic acid (AA)...
April 18, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28391449/percutaneous-tibial-nerve-stimulation-ptns-success-rate-and-the-role-of-rectal-capacity
#3
Lukas Marti, Christian Galata, Ulrich Beutner, Franc Hetzer, Nicoletta Pipitone, Katja Wolff, Jan Borovicka, Walter Brunner, Michael Christian Sulz, Christine Maurus
PURPOSE: Percutaneous tibial nerve stimulation (pTNS) was originally developed to treat urinary incontinence. Recently, some case series have also documented its success in the treatment of fecal incontinence. Nevertheless, the mechanism underlying this effect remains unknown but may be related to changes in rectal capacity. The aim of this study was to investigate the success of pTNS for the treatment of fecal urge incontinence and assess the influence of rectal capacity on treatment efficacy...
April 8, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28371160/short-term-outcome-of-percutaneous-tibial-nerve-stimulation-for-low-anterior-resection-syndrome-results-of-a-pilot-study
#4
D F Altomare, A Picciariello, C Ferrara, R Digennaro, Y Ribas, M De Fazio
AIM: Percutaneous tibial nerve stimulation (PTNS) is a minimally invasive procedure, which has been demonstrated to be effective in faecal/urinary incontinence, but has never been tested in Low Anterior Resection Syndrome (LARS). The severity of LARS may be evaluated by the LARS-score, but rectal cancer treatments may also affect urinary and sexual function, which are not explored by the LARS-score. The TAPE-score is a new validated index addressing the overall pelvic-floor functions...
March 29, 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28352201/tibial-nerve-stimulation-with-a-miniature-wireless-stimulator-in-chronic-peripheral-neuropathic-pain
#5
Paweł Sokal, Marek Harat, Piotr Zieliński, Sara Kierońska
Peripheral neuropathic pain (PNP) and complex regional pain syndrome (CRPS) can be effectively treated with peripheral nerve stimulation. In this clinical trial report, effectiveness of novel, miniature, wirelessly controlled microstimulator of tibial nerve in PNP and CRPS was evaluated. In this pilot study the average preoperative visual analog scale (VAS) score in six patients was 7.5, with 1, 3 and 6 months: 2.6 (p=0.03), 1.6 (p=0.03), and 1.3 (p=0.02), respectively. The mean average score in the six patients a week preceding the baseline visit was 7...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28346718/modulation-of-the-rat-micturition-reflex-with-transcutaneous-ultrasound
#6
Daniel P Casella, Anne G Dudley, Douglass B Clayton, John C Pope, Stacy T Tanaka, John Thomas, Mark C Adams, John W Brock, Charles F Caskey
INTRODUCTION: Low intensity focused ultrasound has recently been identified as a novel method of stimulating targeted neurons. We hypothesized that ultrasound stimulation of the posterior tibial nerve would inhibit bladder contractions in an established rat model of rhythmic bladder contractions. METHODS: Cyclical detrusor contractions were initiated by placing a transurethral catheter in female rats and infusing saline into the bladder. Transcutaneous ultrasound pulses were then delivered to the lower extremity of a rat (overlying the posterior tibial nerve) using a single element spherically focused 250 kHz transducer...
March 27, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28325529/transcutaneous-stimulation-of-the-posterior-tibial-nerve-for-treating-refractory-urge-incontinence-of-idiopathic-and-neurogenic-origin
#7
C Valles-Antuña, M L Pérez-Haro, C González-Ruiz de L, A Quintás-Blanco, E M Tamargo-Diaz, J García-Rodríguez, A San Martín-Blanco, J M Fernandez-Gomez
OBJECTIVE: To assess the efficacy of treatment with transcutaneous posterior tibial nerve stimulation (TPTNS) in patients with urge urinary incontinence, of neurogenic or nonneurogenic origin, refractory to first-line therapeutic options. MATERIAL AND METHODS: We included 65 patients with urge urinary incontinence refractory to medical treatment. A case history review, a urodynamic study and a somatosensory evoked potentials (SEP) study were conducted before the TPTNS, studying the functional urological condition by means of a voiding diary...
March 18, 2017: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/28290507/inhibitory-interneuron-circuits-at-cortical-and-spinal-levels-are-associated-with-individual-differences-in-corticomuscular-coherence-during-isometric-voluntary-contraction
#8
Ryosuke Matsuya, Junichi Ushiyama, Junichi Ushiba
Corticomuscular coherence (CMC) is an oscillatory synchronization of 15-35 Hz (β-band) between electroencephalogram (EEG) of the sensorimotor cortex and electromyogram of contracting muscles. Although we reported that the magnitude of CMC varies among individuals, the physiological mechanisms underlying this variation are still unclear. Here, we aimed to investigate the associations between CMC and intracortical inhibition (ICI) in the primary motor cortex (M1)/recurrent inhibition (RI) in the spinal cord, which probably affect oscillatory neural activities...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28269268/posterior-tibial-nerve-stimulation-using-a-wirelessly-powered-system-in-anesthetized-cats
#9
Zainab Moazzam, Austin R Duke, Paul B Yoo
Posterior Tibial Nerve Stimulation (PTNS) is an effective overactive bladder (OAB) therapy where electrical pulses are typically delivered once per week in a 12-week stimulation regime. While the mechanism of action remains unknown, effective long-term delivery of PTNS has recently become a subject of concern. To this end, a multi-contact electrode was surgically placed in the hind limb region of anesthetized cats to (1) investigate the feasibility of using a wirelessly powered system to stimulate PTN afferents and (2) characterize implant-driven effects of stimulation frequency on modulating bladder activity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268972/co-activation-of-saphenous-nerve-fibers-a-potential-therapeutic-mechanism-of-percutaneous-tibial-nerve-stimulation
#10
Christopher W Elder, Paul B Yoo
Percutaneous tibial nerve stimulation (PTNS) is a minimally invasive and effective treatment for overactive bladder (OAB). However, clinical trials show that positive therapeutic outcomes among patients are difficult to predict (failure rate = 35% to 50%). Inconsistencies in the stimulation amplitudes used clinically and those used in preclinical animal studies led us to hypothesize that OAB therapy involves a secondary bladder-inhibitory pathway. In this paper, we implemented and tested a computer model of the human lower leg that investigated the differential activation of the saphenous nerve (SAFN) and tibial nerve (TN) during percutaneous electrical stimulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268971/electrical-stimulation-of-the-saphenous-nerve-in-anesthetized-rats-a-novel-therapeutic-approach-to-treating-overactive-bladder
#11
Zainab Moazzam, Paul B Yoo
Posterior Tibial Nerve Stimulation (PTNS) is a minimally invasive yet effective therapy for treating overactive bladder (OAB) symptoms with electrical stimulations applied at 20 Hz coupled with amplitudes approximating the foot-twitch threshold (T). However, pre-clinical studies indicate that PTNS-evoked bladder reflexes require stimulation amplitudes exceeding 2T. The objective of this work was to evaluate the presence of secondary low-threshold sensory pathways in the hind-limb region that can be a potential target of activation during clinical PTNS set-up...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267009/perspectives-from-patients-and-care-providers-on-the-management-of-fecal-incontinence-a-needs-assessment
#12
Ramzi M Helewa, Husein Moloo, Lara Williams, Kristine M Foss, Waheeda Baksh-Thomas, Isabelle Raiche
BACKGROUND: A large proportion of Canadians experience fecal incontinence, with no avenue for effective treatments. The Ottawa Hospital has recently started a percutaneous tibial nerve stimulation program for patients who have not improved with conservative efforts. OBJECTIVE: As part of this program implementation, a qualitative needs assessment was undertaken to better define successful outcomes and to identify barriers for program sustainability. DESIGN: This was a cross-sectional, qualitative study involving standardized, semistructured interviews...
April 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/28258435/convergence-of-ipsi-and-contralateral-muscle-afferents-on-common-interneurons-mediating-reciprocal-inhibition-of-ankle-plantarflexors-in-humans
#13
Natalie Mrachacz-Kersting, S S Geertsen, A J T Stevenson, J B Nielsen
Recent studies have shown that afferents arising from muscle receptors located on one side can affect the activity of muscles on the contralateral side. In animal preparations, evidence supports that afferent pathways originating from one limb converge onto interneurons mediating disynaptic reciprocal Ia inhibition of the opposite limb. This study was designed to investigate whether this pathway is similar in humans to that described in animals. Thirteen healthy volunteers participated in one of two experiments...
March 3, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28237919/the-relation-between-the-frequency-of-short-pulse-electrical-stimulation-of-afferent-nerve-fibers-and-evoked-muscle-force
#14
Jakob L Dideriksen, Kasper Leerskov, Magdalena Czyzewska, Rune Rasmussen
OBJECTIVE: Functional electrical stimulation (FES) is conventionally performed by the stimulation of motor axons causing the muscle fibers innervated by these axons to contract. An alternative strategy that may evoke contractions with more natural motor unit behavior is to stimulate afferent fibers (primarily type Ia) to excite the motor neurons at the spinal level. The aim of the study was to investigate the range of forces that can be evoked in this way and the degree to which the torque can be controlled...
February 20, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28237684/effects-of-dexmedetomidine-combined-with-ropivacaine-on-sciatic-and-femoral-nerve-blockade-in-dogs
#15
Thomas A Trein, Beatriz P Floriano, Juliana T Wagatsuma, Joana Z Ferreira, Guilherme L da Silva, Paulo S P Dos Santos, Sílvia H V Perri, Valéria Nls Oliva
OBJECTIVE: To evaluate motor and sensory blockade of combining dexmedetomidine with ropivacaine, administered perineurally or systemically, for femoral and sciatic nerve blocks in conscious dogs. STUDY DESIGN: Randomized, controlled, experimental study. ANIMALS: Seven healthy Beagle dogs, aged 3.3 ± 0.1 years and weighing 11.0 ± 2.4 kg. METHODS: Dogs were anesthetized with isoflurane on three separate occasions for unilateral femoral and sciatic nerve blocks and were administered the following treatments in random order: perineural ropivacaine 0...
February 22, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28227502/posterior-tibial-nerve-stimulation-using-a-wirelessly-powered-system-in-anesthetized-cats
#16
Zainab Moazzam, Austin R Duke, Paul B Yoo, Zainab Moazzam, Austin R Duke, Paul B Yoo, Paul B Yoo, Zainab Moazzam, Austin R Duke
Posterior Tibial Nerve Stimulation (PTNS) is an effective overactive bladder (OAB) therapy where electrical pulses are typically delivered once per week in a 12-week stimulation regime. While the mechanism of action remains unknown, effective long-term delivery of PTNS has recently become a subject of concern. To this end, a multi-contact electrode was surgically placed in the hind limb region of anesthetized cats to (1) investigate the feasibility of using a wirelessly powered system to stimulate PTN afferents and (2) characterize implant-driven effects of stimulation frequency on modulating bladder activity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227181/co-activation-of-saphenous-nerve-fibers-a-potential-therapeutic-mechanism-of-percutaneous-tibial-nerve-stimulation
#17
Christopher W Elder, Paul B Yoo, Christopher W Elder, Paul B Yoo, Paul B Yoo, Christopher W Elder
Percutaneous tibial nerve stimulation (PTNS) is a minimally invasive and effective treatment for overactive bladder (OAB). However, clinical trials show that positive therapeutic outcomes among patients are difficult to predict (failure rate = 35% to 50%). Inconsistencies in the stimulation amplitudes used clinically and those used in preclinical animal studies led us to hypothesize that OAB therapy involves a secondary bladder-inhibitory pathway. In this paper, we implemented and tested a computer model of the human lower leg that investigated the differential activation of the saphenous nerve (SAFN) and tibial nerve (TN) during percutaneous electrical stimulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227180/electrical-stimulation-of-the-saphenous-nerve-in-anesthetized-rats-a-novel-therapeutic-approach-to-treating-overactive-bladder
#18
Zainab Moazzam, Paul B Yoo, Zainab Moazzam, Paul B Yoo, Paul B Yoo, Zainab Moazzam
Posterior Tibial Nerve Stimulation (PTNS) is a minimally invasive yet effective therapy for treating overactive bladder (OAB) symptoms with electrical stimulations applied at 20 Hz coupled with amplitudes approximating the foot-twitch threshold (T). However, pre-clinical studies indicate that PTNS-evoked bladder reflexes require stimulation amplitudes exceeding 2T. The objective of this work was to evaluate the presence of secondary low-threshold sensory pathways in the hind-limb region that can be a potential target of activation during clinical PTNS set-up...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28211795/a-murine-model-of-a-novel-surgical-architecture-for-proprioceptive-muscle-feedback-and-its-potential-application-to-control-of-advanced-limb-prostheses
#19
Tyler R Clites, Matthew J Carty, Shriya Srinivasan, Anthony N Zorzos, Hugh M Herr
OBJECTIVE: Proprioceptive mechanisms play a critical role in both reflexive and volitional lower extremity control. Significant strides have been made in the development of bionic limbs that are capable of bi-directional communication with the peripheral nervous system, but none of these systems have been capable of providing physiologically-relevant muscle-based proprioceptive feedback through natural neural pathways. In this study, we present the agonist-antagonist myoneural interface (AMI), a surgical approach with the capacity to provide graded kinesthetic feedback from a prosthesis through mechanical activation of native mechanoreceptors within residual agonist-antagonist muscle pairs...
February 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28209507/ultrasound-guided-pulsed-radiofrequency-stimulation-of-posterior-tibial-nerve-a-potential-novel-intervention-for-recalcitrant-plantar-fasciitis
#20
Yung-Tsan Wu, Chih-Ya Chang, Yu-Ching Chou, Chun-Chang Yeh, Tsung-Ying Li, Heng-Yi Chu, Liang-Cheng Chen
OBJECTIVE: To evaluate the therapeutic benefit of ultrasound-guided pulsed radiofrequency (PRF) stimulation at the posterior tibial nerve (PTN) in patients with recalcitrant plantar fasciitis (PF). DESIGN: A prospective, randomized, double-blinded, placebo-controlled trial (12-wk follow-up). SETTING: Outpatient local medical center settings. PARTICIPANTS: Patients (N=36) with recalcitrant PF underwent randomization, and all were included in the final data analysis...
May 2017: Archives of Physical Medicine and Rehabilitation
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