2,072 results match your criteria tibial electromyogram

POEMS syndrome: an uncommon cause of peritoneal effusion.

Rev Esp Enferm Dig 2021 May 5. Epub 2021 May 5.

Gastroenterology, Suzhou Ninth People's Hospital, China.

A 46-year-old female patient was admitted to our hospital with abdominal distension and fatigue for 1 months. Physical examination revealed several lymph nodes were palpable in bilateral axilla and groin, ranging from 0.5cm to 2. Read More

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Assessment of biomechanical deficits in individuals with a trans-tibial amputation during level gait using one-dimensional statistical parametric mapping.

Gait Posture 2021 Apr 24;87:130-135. Epub 2021 Apr 24.

Laval University, Faculty of Medicine, Department of Kinesiology, 2325 Rue de l'Université, Québec, G1V 0A6, Canada; Centre for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), 25 boulevard Wilfrid-Hamel, Québec, G1M 2S8, Canada. Electronic address:

Background: Most previous studies reported biomechanical deficits in individuals with a trans-tibial amputation (TTA) during gait using zero-dimensional analyses. However, these analyses do not allow to precisely determine during which part of the gait cycle these deficits occur. There is a need to use more appropriate methods to map the differences, such as one-dimensional statistical parametric mapping. Read More

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Am J Phys Med Rehabil 2021 Apr 14. Epub 2021 Apr 14.

EMG Service, Local Health Unit Toscana Sud Est, Siena, Italy Department of Medical, Surgical and Neurological Sciences, University of Siena, Italy.

Objective: To demonstrate abnormalities of motor conduction of the tibial nerve across the tarsal tunnel (TT) in type 2 diabetes.

Design: 124 consecutive patients (mean age 66.6 years, 62. Read More

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A Rare Case of Tibial Intraneural Ganglion Cyst Arising From the Tibiofibular Joint.

Cureus 2021 Feb 26;13(2):e13570. Epub 2021 Feb 26.

Family Medicine, Des Moines University, Des Moines, USA.

Intraneural ganglion cysts are a rare occurrence. They are most commonly found originating from the common peroneal nerve but are also frequently reported on the radial, ulnar, median, sciatic, tibial, and posterior interosseous nerves. A typical clinical presentation is posterior knee and calf pain resulting from tibial neuropathy with preferential degeneration of the popliteus muscle. Read More

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February 2021

Alteration of H-reflex amplitude modulation is a marker of impaired postural responses in individuals with incomplete spinal cord injury.

Exp Brain Res 2021 Mar 31. Epub 2021 Mar 31.

École de Réadaptation, Faculté de Médecine, Université de Montréal, Pavillon du Parc, C.P.6128 Succ. Centre-ville, Montreal, Qc, H3C 3J7, Canada.

Individuals with incomplete spinal cord injury (iSCI) show altered postural reactions leading to increased risk of falls. To investigate neural correlates underlying this deficit, we assessed the modulation pattern of the Soleus H-reflex in iSCI individuals following unexpected perturbations of a base of support. Ten men with iSCI (AIS D) and 8 age-matched controls (CTRL) stood on a force-platform randomly tilted forward or backward. Read More

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Anterior shin muscles CMAP measurements: Normal limits of symmetry and intra- and interobserver reliability.

Clin Neurophysiol Pract 2021 15;6:93-96. Epub 2021 Feb 15.

Department of Physical Medicine and Rehabilitation, ZNA Middelheim, Antwerp, Belgium.

Objective: The normal limits of symmetry for the compound muscle action potential of the shin muscles (CMAPshin) have not been determined yet. The goal of this study is to provide extensive data on the limits of symmetry and the reliability of CMAPshin.

Methods: The study was conducted in normal healthy males and females. Read More

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February 2021

Variable Branching Pattern of Tibial Nerve in the Tarsal Tunnel: A Gross Anatomical Study With Clinical Implications.

Cureus 2021 Mar 6;13(3):e13729. Epub 2021 Mar 6.

Anatomy, Regional Institute of Medical Sciences, Imphal, IND.

Introduction Tibial nerve is a larger component of the sciatic nerve. It arises from ventral branches (Anterior Division) - L4, L5, S1-S3. Then it travels along the distal border of the popliteus muscle, deep to gastrocnemius and soleus. Read More

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Electromechanical delay of the hamstrings following semitendinosus tendon autografts in return to competition athletes.

Eur J Appl Physiol 2021 Mar 12. Epub 2021 Mar 12.

Faculty of Kinesiology, The University of Calgary, Calgary, AB, Canada.

Purpose: Knee flexor electromechanical delay (EMD) has been proposed as a contributing factor to non-contact anterior cruciate ligament (ACL) injury risk and the semitendinosus (ST) autograft technique has been shown to impair knee flexor torque at large angles of knee flexion. The purpose of this study was to analyse the effects of ACL reconstruction (ACLR) using the ST tendon autograft technique on knee flexor EMD across the knee flexion range of motion, in athletes who had returned to competition.

Methods: Athletes with ACLR (n = 8 females, n = 3 males, 1. Read More

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Superimposing hip extension on knee flexion evokes higher activation in biceps femoris than knee flexion alone.

J Electromyogr Kinesiol 2021 Mar 6;58:102541. Epub 2021 Mar 6.

Neuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyvaskyla, Finland; School of Sport and Exercise, University of Gloucestershire, UK.

Hamstring muscle function during knee flexion has been linked to hamstring injury and performance. However, it is unclear whether knee flexion alone (KF) requires similar hamstring electromyography (EMG) activity pattern to simultaneous hip extension and knee flexion (HE-KF), a combination that occurs in the late swing phase of sprinting. This study examined whether HE-KF maximal voluntary isometric contraction (MVIC) evokes higher (EMG) activity in biceps femoris long head (BFlh) and semitendinosus (ST) than KF alone. Read More

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Early detection of evolving critical illness myopathy with muscle velocity recovery cycles.

Clin Neurophysiol 2021 Feb 20. Epub 2021 Feb 20.

Department of Clinical Neurophysiology, Aarhus University Hospital, Aarhus, Denmark; Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark. Electronic address:

Objective: To investigate the sensitivity of muscle velocity recovery cycles (MVRCs) for detecting altered membrane properties in critically ill patients, and to compare this to conventional nerve conduction studies (NCS) and quantitative electromyography (qEMG).

Methods: Twenty-four patients with intensive care unit acquired weakness (ICUAW) and 34 healthy subjects were prospectively recruited. In addition to NCS (median, ulnar, peroneal, tibial and sural nerves) and qEMG (biceps brachii, vastus medialis and anterior tibial muscles), MVRCs with frequency ramp were recorded from anterior tibial muscle. Read More

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February 2021

Optimized Tibial Nerve Stimulation Partially Reduces Visceral Hypersensitivity in Rats Mediated via Autonomic and Opioid Mechanisms.

Neuromodulation 2021 Feb 22. Epub 2021 Feb 22.

Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Objectives: The aim of this study was to investigate the therapeutic effect and possible mechanisms of tibial nerve stimulation (TNS) on visceral hypersensitivity in rats.

Materials And Methods: 1) The effects of TNS with five sets of parameters on visceral sensitivity in normal rats were evaluated by the assessment of abdominal electromyogram (EMG) and abdominal withdrawal reflex (AWR). 2) The effects and mechanisms of TNS with a special set of parameters (14 Hz, 330 μsec, and 40% motor threshold) were evaluated in acute visceral hypersensitivity rats induced by restraint stress and colonic hypersensitized rats induced by acetic acid during the neonatal stage assessed by the EMG, AWR, and the spectral analysis of heart rate variability derived from the electrocardiogram. Read More

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February 2021

Interrelated hypoalgesia, creep, and muscle fatigue following a repetitive trunk flexion exposure.

J Electromyogr Kinesiol 2021 Apr 10;57:102531. Epub 2021 Feb 10.

Department of Kinesiology, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada. Electronic address:

Repetitive trunk flexion can damage spinal tissues, however its association with low back pain in the workplace may be confounded by factors related to pain sensitivity. Muscle fatigue, exercise-induced hypoalgesia, and creep-induced neuromuscular changes following repetitive trunk flexion may all affect this assumed exposure-pain relationship. This study's purpose was to determine how mechanical pain sensitivity in the low back is affected by a repetitive trunk flexion exposure and identify factors associated with changes in low back pain sensitivity. Read More

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Findings of Electrodiagnostic Studies in Moderate to Severe Lumbar Central Spinal Stenosis-Electrodiagnostic Studies in Lumbar Central Spinal Stenosis.

Healthcare (Basel) 2021 Feb 3;9(2). Epub 2021 Feb 3.

Department of Physical Medicine and Rehabilitation, Ulsan University Hospital, University of Ulsan College of Medicine, 877, Bangeojinsunghwando-ro, Dong-gu, Ulsan 44033, Korea.

: The purpose of this study was to investigate the findings of electrodiagnostic studies (nerve conduction study (NCS) and electromyography (EMG)) in patients with moderate and severe lumbar central spinal stenosis (LCSS). : We retrospectively reviewed the medical records of Ulsan University Hospital and identified 32 consecutive patients (mean age = 66.9 ± 7. Read More

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February 2021

Investigation of EMG parameter for transtibial prosthetic user with flexion and extension of the knee and normal walking gait: A preliminary study.

Proc Inst Mech Eng H 2021 Apr 30;235(4):419-427. Epub 2021 Jan 30.

Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia.

Electromyography signal has been used widely as input for prosthetic's leg movements. C-Leg, for example, is among the prosthetics devices that use electromyography as the main input. The main challenge facing the industrial party is the position of the electromyography sensor as it is fixed inside the socket. Read More

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Stem cells in end-to-side neurorrhaphy. Experimental study in rats.

Acta Cir Bras 2021 20;35(12):e351207. Epub 2021 Jan 20.

PhD, Assistant Professor, Departament of Pathology, Botucatu Medical School, Universidade Estadual Paulista "Júlio de Mesquita Filho", Botucatu-SP, Brazil.

Purpose: To evaluate the influence of mesenchymal stem cells from adipose tissue in the end-to-side neurorrhaphy, focusing in the nerve regeneration and the muscle reinnervation in acute trauma.

Methods: 140 animals were randomly divided in seven groups: control, denervated, end-to-side neurorrhaphy between distal stump of common peroneal nerve and tibial nerve (ESN), ESN wrapped in fascia, ESN wrapped in fascia and platelet gel, ESN wrapped in platelet gel, ESN wrapped in fascia and platelet gel within stem cells (without culture) removed from the adipose tissue. Mass measurements of the animal and of cranial tibial muscles, electromyography, walking track analysis tests and histological examinations of the nerves and muscles after 180 days was performed. Read More

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January 2021

Closed-loop plantar cutaneous augmentation by electrical nerve stimulation could increase ankle plantarflexion at treadmill walking.

IEEE Trans Biomed Eng 2021 Jan 26;PP. Epub 2021 Jan 26.

Ankle plantarflexion plays an important role in forward propulsion and anterior-posterior balance during locomotion. This component of gait is often critically impacted by neurotraumas and neurological diseases. We hypothesized that augmenting plantar cutaneous feedback, via closed-loop distal-tibial nerve stimulation, could increase ankle plantarflexion during walking. Read More

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January 2021

Muscle-Specific Tyrosine Kinase Antibody Positive Myasthenia Gravis With Peripheral Nerve Hyperexcitability: Case Report and Literature Review.

Li Yang

Clin Neuropharmacol 2021 Mar-Apr 01;44(2):57-61

Electromyogram Room, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.

Objectives: Administration of acetylcholinesterase inhibitors can bring about peripheral nerve hyperexcitability symptom in muscle-specific tyrosine kinase antibody positive myasthenia gravis, but the changes in electromyography before and after drug withdrawal have not been described in detail.

Methods: Electromyography was performed on a case of muscle-specific tyrosine kinase antibody positive myasthenia gravis with peripheral nerve hyperexcitability correlated with the administration of pyridostigmine bromide before and after drug withdrawal, respectively.

Results: Afterdischarges close after M waves appeared on the tibial nerve, common peroneal nerve, median nerve, and ulnar nerve, and these presented unique characteristics in repetitive nerve stimulation. Read More

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January 2021

The Effects of Stochastic Galvanic Vestibular Stimulation on Body Sway and Muscle Activity.

Front Hum Neurosci 2020 14;14:591671. Epub 2020 Dec 14.

Department of Neuromodulation and Neurosurgery, Graduate School of Medicine, Osaka University, Osaka, Japan.

This study aimed to investigate whether galvanic vestibular stimulation with stochastic noise (nGVS) modulates the body sway and muscle activity of the lower limbs, depending on visual and somatosensory information from the foot using rubber-foam. Seventeen healthy young adults participated in the study. Each subject maintained an upright standing position on a force plate with/without rubber-foam, with their eyes open/closed, to measure the position of their foot center of pressure. Read More

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December 2020

The relationship between nerve conduction studies and neuropathic pain in sciatic nerve injury due to intramuscular injection.

Korean J Pain 2021 Jan;34(1):124-131

Department of Neurology, Adana City Training and Research Hospital, Adana, Turkey.

Background: Sciatic nerve injury due to intramuscular injection (SNIII) is still a health problem. This study aimed to determine whether there is a correlation between neuropathic pain and electrodiagnostic findings in SNIII.

Methods: Patients whose clinical and electrodiagnostic findings were compatible with SNIII participated in this retrospective cohort study. Read More

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January 2021

A biomedical Engineering Laboratory module for exploring involuntary muscle reflexes using Electromyography.

J Biol Eng 2020 Nov 9;14(1):26. Epub 2020 Nov 9.

Institute of Biomedical Engineering, University of Toronto, 164 College St Room 407, Toronto, ON, M5S 3G9, Canada.

Background: Undergraduate biomedical engineering (BME) students interested in pursuing a career in research and development of medical or physiological monitoring devices require a strong foundation in biosignal analysis as well as physiological theory. Applied learning approaches are reported to be effective for reinforcing physiological coursework; therefore, we propose a new laboratory protocol for BME undergraduate physiology courses that integrates both neural engineering and physiological concepts to explore involuntary skeletal muscle reflexes. The protocol consists of two sections: the first focuses on recruiting soleus motor units through transcutaneous electrical nerve stimulation (TENS), while the second focuses on exploring the natural stretch reflex with and without the Jendrassik maneuver. Read More

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November 2020

A case presenting electrophysiological and immunological characteristics of Fisher syndrome and Lambert-Eaton myasthenic syndrome.

Muscle Nerve 2021 03 21;63(3):E16-E18. Epub 2020 Dec 21.

Disability Studies of Peripheral Nerve and Muscle, Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan.

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New Approaches to Critical Illness Polyneuromyopathy: High-Resolution Neuromuscular Ultrasound Characteristics and Cytokine Profiling.

Neurocrit Care 2020 Nov 24. Epub 2020 Nov 24.

Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstrasse 56, 44791, Bochum, Germany.

Background: Diagnosis of intensive care unit acquired weakness (ICUAW) is challenging. Pathogenesis of underlying critical illness polyneuromyopathy (CIPNM) remains incompletely understood. This exploratory study investigated whether longitudinal neuromuscular ultrasound examinations and cytokine analyses in correlation to classical clinical and electrophysiological assessment contribute to the understanding of CIPNM. Read More

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November 2020

The torque analysis of lower limbin basketball based on sEMG signal.

Limin Ren

J Pak Med Assoc 2020 Sep;70 [Special Issue](9):105-109

College of Physical Education and Health, Chongqing Three Gorges University, Wanzhou, China.

Objective: To assess the advantage of using the sEMG signal for establishing the mathematical model of lower limb movement and evaluating the improvement in the jumping ability of basketball players as the ultimate target strength. Also, to evaluate its use it in the training of lower limb strengthening of basketball players.

Methods: In this study conducted from March 1, 2019 to June 1, 2019, 30 professional male basketball players were selected as the subjects, gait analysis was carried out when they finished the three-step layup in 15 minutes. Read More

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September 2020

Comparison of nerve conduction parameters in canine studies using recording needle and surface electrodes.

Vet J 2020 Oct 31;264:105534. Epub 2020 Aug 31.

School of Veterinary Sciences, University of Bristol, Langford Small Animal Hospital, Langford, Bristol BS40 5DU, UK.

Surface electrodes have been used in electromyography and nerve conduction studies in human and veterinary medicine, but comparisons have not been made between surface and needle electrode recordings in dogs. Our aim in this method comparison study was to determine whether surface electrodes captured larger compound motor action potentials (CMAP) than needle electrodes. Tibial nerve CMAP from 25 dogs with normal limb function was acquired using both surface and needle recording electrodes; the stimulus was elicited with monopolar concentric needles. Read More

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October 2020

Sensory Neuropathy in Parkinson Disease: Electrodiagnostic Evaluation.

Neurodiagn J 2020 Sep;60(3):177-184

Neurophysiology Service, Clínica das Américas , Curitiba, Brasil.

The relationship between Parkinson Disease (PD) and peripheral neuropathy (PN) has gained attention in recent years. There is increasing evidence of a-synuclein deposition and pointing to a form of small fiber neuropathy intrinsic to PD, medium-large fiber PN is also a relatively frequent and potentially severe complication in advanced levodopa-treated PD, but degenerative factors and vitamin deficiency were related. To determine the neurophysiological characteristics of patients with PD and the clinical manifestations of suspected PN. Read More

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September 2020

Post-activation depression of primary afferents reevaluated in humans.

J Electromyogr Kinesiol 2020 Oct 29;54:102460. Epub 2020 Aug 29.

Koç University, School of Medicine, 34450 Sariyer, Istanbul, Turkey. Electronic address:

Amplitude variation of Hoffmann Reflex (H-reflex) was used as a tool to investigate many neuronal networks. However, H-reflex itself is a subject to intrinsic changes including post-activation depression (P-AD). We aimed to investigate P-AD and its implication on motor control in humans. Read More

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October 2020

An Unusual and Rare Presentation of Dermatomyositis Sine Dermatitis Complicated by Neuromyositis.

Cureus 2020 Aug 24;12(8):e10000. Epub 2020 Aug 24.

Pathology, Mount Sinai Hospital, New York, USA.

Dermatomyositis sine dermatitis (DMSD) is a rare autoimmune disease. It's distinguished from classical dermatomyositis (DM) by a lack of skin involvement. DM is known to have a variety of extramuscular manifestations, including interstitial lung disease, myocarditis, and dysphagia. Read More

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Electrophysiological Study in Acute Spinal Cord Injury Patients: Its Correlation to Neurological Deficit and Subsequent Recovery Assessment by ASIA Score.

Indian J Orthop 2020 Sep 27;54(5):678-686. Epub 2020 Apr 27.

Baba Saheb Ambedkar Medical College, Rohini, New Delhi, India.

Background: To investigate the relationship between neurological deficit and subsequent recovery as assessed by ASIA score and findings of electrodiagnostic study in acute spinal cord injury (SCI) patients.

Methods: Thirty-five patients with acute SCI presenting within 48 h of injury were clinically evaluated for the level, extent, and severity of SCI according to the ASIA standards in a tertiary-level care center. Electrodiagnostic studies of bilateral two motor (tibial and peroneal), one sensory (sural) nerves, and five muscles [iliopsoas, vastus medialis, tibialis anterior, gastrocnemius, and extensor hallucis longus (EHL)] were conducted and repeated at 3 months and 6 months. Read More

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September 2020

[Effectiveness of lower extremity Dellon triple nerve decompression in treatment of early-stage diabetic Charcot foot].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2020 Aug;34(8):1005-1011

Department of Microreconstructive Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi Xinjiang, 830011, P.R.China.

Objective: To study the effectivenss of lower extremity Dellon triple nerve decompression in the treatment of early-stage diabetic Charcot foot.

Methods: The clinical data of 24 patients with Eichenholtz stage 0-1 diabetic Charcot foot who were admitted between September 2017 and February 2019 were retrospectively analyzed. Among them, 14 cases were treated with lower extremity Dellon triple nerve decompression (treatment group), and 10 cases were treated with conservative treatment such as immobilization the affected limbs and nutritional nerve drugs (control group). Read More

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