Electrodiagnostic Evaluation of Compressive Nerve Injuries of the Upper Extremities

Freedman, Mitchell K.; Helber, Garett J.; Pothast, Jason; Shahwan, T.G.; Simon, Jeremy I.; Sher, Liane

doi:10.1016/j.ocl.2012.07.010

Cited by 12 publications

(10 citation statements)

References 17 publications

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“…Symptoms may be provoked with resisted elbow flexion, resisted forearm pronation, and resisted finger flexion (20). Neurodiagnostic studies are often helpful with EMG showing irregularities in pronator quadratus, FPL, or median branch of FDP (11). MRI is usually not necessary but may show signal intensity changes related to muscle denervation (10).…”

Section: Anterior Interosseous Nerve Syndromementioning

confidence: 99%

“…Traditionally Phalen sign (symptom reproduction with bilateral wrist flexion) and Tinel sign at the wrist have been used as physical examination findings for diagnosing CTS, with Phalen's being the most reliable clinical test. Electrodiagnostic studies have a reported 85% to 90% accuracy for CTS and can be useful for diagnosis (11). MRI can be useful in detecting a space-occupying lesion, but otherwise, it has fairly low sensitivity and specificity for CTS (10).…”

Section: Ctsmentioning

confidence: 99%

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Upper Extremity Nerve Entrapment Syndromes in Sports

Cass

2014

Current Sports Medicine Reports

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Peripheral nerve entrapment syndromes are difficult diagnoses to make. Symptoms are often vague and mimic other musculoskeletal pathology. Clinicians' best diagnostic tools for entrapment neuropathies are a good history, physical examination, and anatomical knowledge. Neurodiagnostic testing and advanced imaging have some role to play in entrapment neuropathies, but these are not always necessary or helpful. Most entrapment neuropathies resolve with nonoperative treatment. This article will look at upper extremity entrapment neuropathies and review updated literature from the last decade.

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Section: Anterior Interosseous Nerve Syndromementioning

confidence: 99%

Section: Ctsmentioning

confidence: 99%

Upper Extremity Nerve Entrapment Syndromes in Sports

Cass

2014

Current Sports Medicine Reports

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“…Given her presentation, supramaximal stimulation of the AN was performed. 4 The electrical stimulation was executed at the Erb's point and the compound motor action potential (CMAP) was recorded with non-invasive surface electrodes over the deltoid muscle. The stimulation of the right AN (healthy side) evoked a biphasic response of the deltoid muscle with a 3.6 ms latency and 10 mV amplitude.…”

Section: Case Reportmentioning

confidence: 99%

Axillary nerve palsy consequent to a guided manual stretch of the upper extremities: a case report

Heckmann

2013

Journal of Manual & Manipulative Therapy

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“…Segundo Freedman (2012) nos casos crônicos de lesão do nervo periférico, quando não houver uma reinervação satisfatória da musculatura esquelética,a demanda por aumento de força é obtida principalmente pelo mecanismo de tetania, aumentando a taxa de disparo para promover aumento de força muscular. A contração tetânica continua até que os estímulos sejam interrompidos ou a musculatura entre em fadiga (FREEDMAN et al, 2012;POWERS et al, 2000).…”

Section: Músculounclassified

“…Este achado pode ser esclarecido pelas afirmações Freedman et al (2012), em que, nos casos de lesão dos nervos periféricos, o aumento da taxa de disparo pode aumentar substancialmente para atenuar a pouca capacidade de aumento do recrutamento, devido as falhas da reinervação, gerando aumento nos valores de RMS. Shimose, et al (2011), fez um estudo experimental aplicando um protocolo de fortalecimento para os músculos extensores durante oito semanas, para analisar a atividade de As características no domínio da frequência extraídas do sinal de EMG de superfície, em especial a frequência média e a frequência mediana, são bem estabelecidos na literatura e correlacionados, por exemplo, com avaliações de fadiga muscular que pode ocorrer durante uma contração sustentada à força máxima ou submáxima, resultando em um decaimento de FM e FMD (KAPLANIS et al, 2009;MARINA et al, 2013;MING et al, 2014).…”

Section: Comparação Entre Os Gruposunclassified

Avaliação da lesão nervosa periférica por meio da eletromiografia de superfície

Luiz¹

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Peripheral Nerve lesions (LNP) interfere and impair the capacity of the patient. The break in the continuity of the structure of peripheral nerves results in blocking the propagation of nerve impulses, affecting motor skills, sensory and causing a disruption of activities functional.A posttraumatic regeneration is complex and the individual can stay with sequelae (Rosén and Lundborg 2007). The objective is to point out possible differences in muscle characteristics after the LNP. Participated effectively this research 24 volunteers, divided into two groups, one group of volunteers With Injury (GCL) (n = 4) and a group of volunteers No Injury (GSL), divided into two GSL groups of men (n = 10) and the GSL Women (n = 10).Volunteers with injury underwent an assessment of physical therapy clinical trials. The 24 volunteers spent the EMG evaluation surface, which consisted of wrist extension task, analysing the activite of muscles Extension Radial Carpal and Extension Ulnar Carpal, pulling a load cell. It was extracted three characteristics from EMG signal: RMS, Medium Frequency (FM) and Median Frequency (FMD). By comparing the qualitative clinical evaluations strength, the quantitative analysis with the load cell was considerably effective for presenting difference in comparison of the injured limb having lower resultant force. In the evaluation of the volunteers with injury variables extracted from the EMG signal was not possible to observe a characterization according to the time of injury. In the statistical analysis the No Injury group, the comparison between the dominant member versus non-dominant limb there has been no difference. According to the comparison of the GCL and GSL volunteers with lesions showed a trend towards higher frequency values, but the statistical analysis there was no significant difference between groups. Biggest FM and FMD values may indicate a predominance of type II fibers, caused by cross post reinnervation, genetic factors, functional demands and individual variations can also change muscle recruitment (Fugl-Meyer, ERIKSSON et al. 1982). However these findings that show no difference in comparisons of myoelectric activity which may indicate that these post LNP volunteers have acquired good recovery due to successful treatment.

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Electrodiagnostic Evaluation of Compressive Nerve Injuries of the Upper Extremities

Cited by 12 publications

References 17 publications

Upper Extremity Nerve Entrapment Syndromes in Sports

Upper Extremity Nerve Entrapment Syndromes in Sports

Axillary nerve palsy consequent to a guided manual stretch of the upper extremities: a case report

Avaliação da lesão nervosa periférica por meio da eletromiografia de superfície

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