Utility of the cutaneous silent period in the evaluation of carpal tunnel syndrome

Koo, Yong Seo; Park, Ha Rim; Joo, Byung Euk; Choi, Jeong Yoon; Jung, Ki Young; Park, Kun Woo; Cho, S. Charles; Kim, Byung Jo

doi:10.1016/j.clinph.2010.03.012

Cited by 20 publications

(19 citation statements)

References 25 publications

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“…The delay of L1 latency (27 ms longer) was observed in patient with the median nerve entrapment than in a healthy subject ( Figure 4 ). A prolonged L1 latency in patients with carpal tunnel syndrome was described ( 12 ).…”

Section: Resultsmentioning

confidence: 99%

Cutaneous Silent Period in the Evaluation of Small Nerve Fibres

Tirić–Čampara¹,

Denišlič²,

Djelilovic-Vranic³

et al. 2014

Med Arh

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Introduction:High intensity cutaneous stimulus transiently suppresses tonic voluntary muscle activity resulting in cutaneous silent period (CSP).Aim:The aim of our study was to evaluate the normal values of an onset latency L1, a late latency L2 and a duration of CSP after stimulating sensory fibres of the median nerve.Material and Methods:This prospective study was performed at the Neurology Department, Clinical Center of Sarajevo University in period from January 1st 2013 to December 1st 2013. In our study we examined 61 subjects. The group included our relatives, coworkers and friends. The informed consent from testing subjects was obtained.Results:The origin of silent period is stimulation of small A-delta nerve fibres. The pre-synaptic or post-synaptic interruption of the electrical volley to motor neurons is discussed. Median values of muscle activity suppression in healthy female is 55.0 ms (45.0-74.0) and 59.0 ms (52.0-67) male subjects. There is a correlation between the onset latency L1and the late L2 latency (p‹0.03). In the on-going study it seems that delay of L1 and shorter muscle activity suppression might provide a sign of small nerve fibres involvement.Conclusion:The use of CSP improves the value of neurophysiology examination.

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Section: Resultsmentioning

confidence: 99%

Cutaneous Silent Period in the Evaluation of Small Nerve Fibres

Tirić–Čampara¹,

Denišlič²,

Djelilovic-Vranic³

et al. 2014

Med Arh

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“…Different results have been reported in the literature. Koo et al [9] have found the median CSP latency significantly longer in the CTS group, but have not observed a significant difference in duration. Aurora et al [11] , and Yaman et al [12] reported that they did not detect a significant difference in silent period latencies compared to the control group.…”

Section: Discussionmentioning

confidence: 88%

“…Cutaneous silent period (CSP), which is one of the methods used to demonstrate fine fiber involvement, unlike other methods, is a method that is noninvasive, does not require any specific equipments and can be measured with an EMG device done for standard nerve conduction studies, and shows no additional cost to the patient. [9] While there are studies in the literature on changes in the median nerve CSP in CTS patients, no studies of CSP on the ulnar nerve in the same hand have been reported. The primary aim of this study was to determine the cooccurence of ulnar nerve-entrapment neuropathy in patients diagnosed clinically and electrophysiologically with idiopathic CTS, and to investigate the diagnostic value of the changes in CSP parameters of the median and ulnar nerve in CTS.…”

Section: Introductionmentioning

confidence: 98%

Investigation Of Coincidence of Idiopathic Carpal Tunnel Syndrome and Ulnar Nerve Entrapment Neuropathy: Role of Cutaneous Silent Period

Kaplan¹

2019

South Clin Ist Euras

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The aim of this study was to investigate the coincidence of ulnar nerve entrapment neuropathy in idiopathic carpal tunnel syndrome (CTS) patients and the role of the cutaneous silent period (CSP) technique in detecting this association. Methods: A total of 42 patients referred to the Dr. Lutfi Kirdar Kartal Education and Research Hospital electromyography (EMG) laboratory with the initial diagnosis of carpal tunnel syndrome and 42 healthy age-and sex-matched volunteers were included in this cross-sectional study. Nerve conduction studies, needle EMG, and CSP measurement were performed on both groups. Results: In the group of 42 patients, 10 were male and 32 were female, with a mean age of 42.68±7.25 years, and the control group comprised 10 men and 32 women with a mean age of 35.58±8.35 years. A total of 68 hands in the patient group and 78 hands in the control group were examined. In all, 16 hands had mild CTS, moderate CTS was present in 47 hands, and 5 hands demonstrated severe CTS. Ulnar nerve entrapment neuropathy was observed in 3 of the 42 patients. Prolonged median sensory and motor distal nerve latency, reduction of sensory and motor action potential amplitudes, and slowing of conduction velocity were observed in nerve conduction studies of the CTS group. Median CSP latency was prolonged in the CTS group (p=0.000). Changes in median CSP duration and ulnar CSP latency and duration did not reach the level of statistical significance (p>0.05). There was no correlation between the severity of CTS and ulnar nerve entrapment neuropathy coincidence with the latency and duration of CSP. Conclusion: To the best of our knowledge, no previous study investigating ulnar CSP changes in CTS patients has been reported in the literature. The results of this research indicated that while CSP changes were detected in the CTS patients, CSP changes were not associated with the severity of CTS. There was no significant change in CSP parameters in patients with CTS and ulnar nerve entrapment neuropathy in the wrist.

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“…The scores for SSS and FSS were calculated as the mean of all items for each subscale. The mean score of the first 5 items in the SSS was also used to evaluate pain (PAIN) . The BCTQ was administered on the same day as the angular velocity measurement of finger taps.…”

Section: Methodsmentioning

confidence: 99%

Quantitative evaluation of hand motor function using a gyrosensor in mild and moderate carpal tunnel syndrome

Seok

Kim

et al. 2019

Muscle and Nerve

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Introduction The objective of this study was to determine whether patients with carpal tunnel syndrome (CTS) manifest changes in early‐stage motor function and to investigate the utility of a gyrosensor for quantitative evaluation of motor function. Methods Angular velocity signal was measured during finger tapping in 52 patients with mild‐to‐moderate CTS and 45 controls. Four finger‐tapping performance (FTP) values—root‐mean‐squared (RMS) velocity, RMS angle, peak power, and total power—were derived from the signal. Results All FTP values were significantly lower in patients with CTS than in controls (P = 0.001 or P < 0.001). There were no significant differences between the mild and moderate CTS subgroups. Discussion FTP measurement with a gyrosensor represents a valuable tool for the evaluation of median nerve motor function in patients with CTS. It facilitates the detection of subclinical motor dysfunction in patients with early stage CTS. Muscle Nerve 59:465–469, 2019

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Utility of the cutaneous silent period in the evaluation of carpal tunnel syndrome

Cited by 20 publications

References 25 publications

Cutaneous Silent Period in the Evaluation of Small Nerve Fibres

Cutaneous Silent Period in the Evaluation of Small Nerve Fibres

Investigation Of Coincidence of Idiopathic Carpal Tunnel Syndrome and Ulnar Nerve Entrapment Neuropathy: Role of Cutaneous Silent Period

Quantitative evaluation of hand motor function using a gyrosensor in mild and moderate carpal tunnel syndrome

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