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Tibial nerve stimulation

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https://www.readbyqxmd.com/read/28237919/the-relation-between-the-frequency-of-short-pulse-electrical-stimulation-of-afferent-nerve-fibers-and-evoked-muscle-force
#1
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
#2
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
#3
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
#4
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
#5
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
#6
Tyler R Clites, Matthew Carty, Shriya Srinivasan, Anthony Zorzos, Hugh Herr
<i>Objective:</i> 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 Myoplastic 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
#7
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-week follow-up). SETTING: Outpatient of local medical center settings. PARTICIPANTS: Thirty-six patients with recalcitrant PF were randomized and 36 participants were included in the final data analysis...
February 13, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28177994/bilateral-posterior-tibial-nerve-stimulation-in-the-treatment-of-rectal-evacuation-disorder-a-preliminary-report
#8
Khaled M Madbouly, Khaled S Abbas, Emad Emanuel
BACKGROUND: Posterior tibial nerve stimulation influences both motor and sensory pathways, as well as the central nervous system. Stimulation of posterior tibial nerve roots (L4 to S3) could improve stool evacuation through S3 and/or S2 stimulation. OBJECTIVE: This study aimed to assess the efficiency of bilateral posterior tibial nerve stimulation in the treatment of rectal evacuation disorder without anatomic obstruction. DESIGN: This was a prospective case series studying the treatment of patients with obstructed defecation by posterior tibial nerve stimulation...
March 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/28148646/microcircuit-formation-following-transplantation-of-mouse-embryonic-stem-cell-derived-neurons-into-peripheral-nerve
#9
Philippe Magown, Victor F Rafuse, Robert M Brownstone
Motoneurons derived from embryonic stem cells can be transplanted into the tibial nerve, where they extend axons to functionally innervate target muscle. Here, we studied spontaneous muscle contractions in these grafts three months following transplantation. One-half of the transplanted grafts generated rhythmic muscle contractions of variable patterns, either spontaneously or in response to brief electrical stimulation. Activity generated by transplanted embryonic stem cell-derived neurons was driven by glutamate and was modulated by muscarinic and GABAergic/glycinergic transmission...
February 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28124534/percutaneous-tibial-nerve-stimulation-versus-electrical-stimulation-with-pelvic-floor-muscle-training-for-overactive-bladder-syndrome-in-women-results-of-a-randomized-controlled-study
#10
Carlo Vecchioli Scaldazza, Carolina Morosetti, Rosita Giampieretti, Rossana Lorenzetti, Marinella Baroni
INTRODUCTION: This study compared percutaneous tibial nerve stimulation (PTNS) versus electrical stimulation with pelvic floor muscle training (ES + PFMT) in women with overactive bladder syndrome (OAB). MATERIALS AND METHODS: 60 women with OAB were enrolled. Patients were randomized into two groups. In group A, women underwent ES with PFMT, in group B women underwent PTNS. RESULTS: A statistically significant reduction in the number of daily micturitions, episodes of nocturia and urge incontinence was found in the two groups but the difference was more substantial in women treated with PTNS; voided volume increased in both groups...
January 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28068994/spatiotemporal-changes-of-optical-signals-in-the-somatosensory-cortex-of-neuropathic-rats-after-electroacupuncture-stimulation
#11
Myeounghoon Cha, Younbyoung Chae, Sun Joon Bai, Bae Hwan Lee
BACKGROUND: Peripheral nerve injury causes physiological changes in primary afferent neurons. Neuropathic pain associated with peripheral nerve injuries may reflect changes in the excitability of the nervous system, including the spinothalamic tract. Current alternative medical research indicates that acupuncture stimulation has analgesic effects in various pain symptoms. However, activation changes in the somatosensory cortex of the brain by acupuncture stimulation remain poorly understood...
January 10, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28060839/sensory-feedback-in-interlimb-coordination-contralateral-afferent-contribution-to-the-short-latency-crossed-response-during-human-walking
#12
Sabata Gervasio, Michael Voigt, Uwe G Kersting, Dario Farina, Thomas Sinkjær, Natalie Mrachacz-Kersting
A constant coordination between the left and right leg is required to maintain stability during human locomotion, especially in a variable environment. The neural mechanisms underlying this interlimb coordination are not yet known. In animals, interneurons located within the spinal cord allow direct communication between the two sides without the need for the involvement of higher centers. These may also exist in humans since sensory feedback elicited by tibial nerve stimulation on one side (ipsilateral) can affect the muscles activation in the opposite side (contralateral), provoking short-latency crossed responses (SLCRs)...
2017: PloS One
https://www.readbyqxmd.com/read/28000184/-to-improve-the-surgical-outcome-of-chronic-constipation-from-bed-to-the-bench
#13
Weidong Tong, Li Wang
The prevalence of chronic constipation is about 16% in adults, and increases with age, especially after 60 years old. Usually, surgical intervention is recommended to patients with long standing intractable constipation, who have undergone various conservative therapies. Lots of surgical procedures have been reported for different kinds of constipation, including slow transit, outlet obstruction, etc. For slow transit constipation, total or subtotal colectomy is commonly used. Merely for the internal rectal prolapse, at least 10 procedures are commonly adopted in clinic...
December 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27979539/re-tibial-nerve-stimulation-for-treating-neurogenic-lower-urinary-tract-dysfunction-a-systematic-review
#14
Alan J Wein
No abstract text is available yet for this article.
January 2017: Journal of Urology
https://www.readbyqxmd.com/read/27974317/sex-difference-in-the-contribution-of-gabab-receptors-to-tibial-neuromodulation-of-bladder-overactivity-in-cats
#15
Thomas W Fuller, Xuewen Jiang, Utsav Bansal, Vladimir Lamm, Bing Shen, Jicheng Wang, James R Roppolo, William C de Groat, Changfeng Tai
This study investigated the role of γ-aminobutyric acid subtype B (GABAB) receptors in tibial and pudendal neuromodulation of bladder overactivity induced by intravesical administration of dilute (0.5%) acetic acid (AA) in α-chloralose anesthetized cats. To inhibit bladder overactivity, tibial or pudendal nerve stimulation (TNS or PNS) was applied at 5 Hz and 2 or 4 times threshold (T) intensity for inducing toe or anal sphincter twitch. TNS at 2T or 4T intensity significantly (p<0.05) increased the bladder capacity to 173...
December 14, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27927655/role-of-cannabinoid-receptor-type-1-in-tibial-and-pudendal-neuromodulation-of-bladder-overactivity-in-cats
#16
Xuewen Jiang, Michelle Yu, Jamie Uy, Thomas Fuller, Cameron Jones, Bing Shen, Jicheng Wang, James R Roppolo, William de Groat, Changfeng Tai
The role of cannabinoid type 1 (CB1) receptors in tibial and pudendal neuromodulation of bladder overactivity induced by intravesical infusion of 0.5% acetic acid (AA) was determined in α-chloralose anesthetized cats. AA irritation significantly (p<0.01) reduced bladder capacity to 36.6±4.8% of saline control capacity. Tibial nerve stimulation (TNS) at 2 or 4 times threshold (T) intensity for inducing toe movement inhibited bladder overactivity and significantly (p<0.01) increased bladder capacity to 69...
December 7, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27926561/percutaneous-posterior-tibial-nerve-stimulation-vs-perianal-application-of-glyceryl-trinitrate-ointment-in-the-treatment-of-chronic-anal-fissure-a-randomized-clinical-trial
#17
Jaime Ruiz-Tovar, Carolina Llavero
BACKGROUND: Current therapeutic guidelines for the treatment of chronic anal fissure establish a medical approach as the first step. Glyceryl trinitrate ointment is the most popular of the available topical treatments in Spain but it is associated with the appearance of headache. OBJECTIVE: The purpose of this study was to compare the compliance rate among patients receiving glyceryl trinitrate treatment for chronic anal fissure with that among patients receiving percutaneous posterior tibial nerve stimulation...
January 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/27902645/effect-of-nerve-stimulation-use-on-the-success-rate-of-ultrasound-guided-subsartorial-saphenous-nerve-block-a-randomized-controlled-trial
#18
Shaylyn H Montgomery, Colleen M Shamji, Grace S Yi, Cynthia H Yarnold, Stephen J Head, Scott C Bell, Stephan K W Schwarz
BACKGROUND AND OBJECTIVES: Ultrasound-guided subsartorial saphenous nerve block is commonly used to provide complete surgical anesthesia of the foot and ankle in combination with a popliteal sciatic nerve block. However, in part owing to its small caliber and absence of a prominent vascular landmark in the subsartorial plane distal to the adductor canal, the saphenous nerve is more difficult to reliably block than the sciatic nerve in the popliteal fossa. Although the saphenous nerve is a sensory nerve only, neurostimulation can be used to elicit a "tapping" sensation on the anteromedial aspect of the lower leg extending toward the medial malleolus...
January 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/27895925/somatic-neural-alterations-in-non-diabetic-obesity-a-cross-sectional-study
#19
Ram Lochan Yadav, Deepak Sharma, Prakash Kumar Yadav, Dev Kumar Shah, Kopila Agrawal, Rita Khadka, Md Nazrul Islam
BACKGROUND: Reports on alterations in somatic neural functions due to non-diabetic obesity, a major risk factor for diabetes, are few and still a matter of debate. Nevertheless, to our knowledge, reports lack any comments on the type of somatic nerve fibers affected in non-diabetic obesity. Therefore, this study aimed to find out the alteration in somatic neural functions in non-diabetic obese persons if any. METHODS: The study was conducted on 30 adult non-diabetic obese persons (mean age 32...
2016: BMC Obesity
https://www.readbyqxmd.com/read/27879521/tibial-nerve-stimulation-to-inhibit-the-micturition-reflex-by-an-implantable-wireless-driver-microstimulator-in-cats-retracted
#20
Xing Li, Li-Min Liao, Guo-Qing Chen, Zhao-Xia Wang, Tian-Ji Lu, Han Deng, Gerald-E Loeb
BACKGROUND: Traditional tibial nerve stimulation (TNS) has been used to treat overactive bladder syndrome (OAB), but there are some shortcomings. Thus, a novel alternative is needed for the treatment of OAB. The study investigated the effects of a new type of tibial nerve microstimulator on the micturition reflex in cats. METHODS: An implantable wireless driver microstimulator was implanted around the tibial nerve in 9 α-chloralose anesthetized cats. Cystometry was performed by infusing 0...
August 2016: Medicine (Baltimore)
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