Sonographic diagnosis of carpal tunnel syndrome: a study in 200 hospital workers

Castro, Adham do Amaral e; Skare, Thelma Larocca; Nassif, Paulo Afonso Nunes; Sakuma, Alexandre Kaue; Barros, Wagner Haese

doi:10.1590/0100-3984.2014.0069

Cited by 14 publications

(15 citation statements)

References 17 publications

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“…Ultrasound examination of the median nerve is a sensitive and efficient means of diagnosing carpal tunnel syndrome (CTS) . One of three methods is generally used clinically to help diagnose CTS with US.…”

Section: Introductionmentioning

confidence: 99%

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Cross‐sectional area of the median nerve at the wrist: Comparison of sonographic, MRI, and cadaveric measurements

Lee

Griffith

et al. 2018

J of Clinical Ultrasound

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Background: This study compares median nerve cross-sectional area (CSA) measurements at the wrist obtained with ultrasound (US) and magnetic resonance imaging (MRI) using cadaveric measurements as the gold standard.Methods: Median nerve CSA was measured using US and MRI in 9 cadaveric wrists obtained from 5 subjects at 5 locations: distal forearm, proximal to tunnel inlet, at tunnel inlet, at tunnel outlet, and distal to tunnel outlet and then on identical cadaveric transverse sections obtained with a bandsaw. All US, MRI, and cadaveric measurements were repeated to determine reliability. Median nerves of 10 patients with clinical carpal tunnel syndrome (CTS) were measured with US and MRI using an identical method US.Results: Median nerve CSA MRI measurements correlated better (Pearson correlation: 0.80-0.95, P < .05) with cadaveric measurements than with US measurements (Pearson correlation: 0.61-0.79, P < .05). Median nerve CSA US measurements (8.6-12.5 mm 2 , P < .05) were smaller at all levels than MRI (11.3-14.7 mm 2 ) or cadaveric (11.0-14.9 mm 2 ) measurements while MRI and cadaver measurements were similar at all levels. Median nerve CSA MRI measurements in CTS patients were larger than US measurements at all levels. Conclusion: Median nerve CSA measurements by MRI are larger than US measurements and correlated better with cadaveric measurements. Median nerve CSA criteria used for diagnosing CTS on US are not likely to be applicable to MRI. K E Y W O R D S cross sectional, measurement, median nerve, MRI, ultrasound

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Section: Introductionmentioning

confidence: 99%

“…One of three methods is generally used clinically to help diagnose CTS with US. These are the absolute measurement method, the comparative measurement method, and the ratio method . All 3 methods rely primarily on tracing the cross‐sectional area (CSA) of the median nerve at designated areas using in‐build electronic calipers.…”

Section: Introductionmentioning

confidence: 99%

Cross‐sectional area of the median nerve at the wrist: Comparison of sonographic, MRI, and cadaveric measurements

Lee

Griffith

et al. 2018

J of Clinical Ultrasound

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“…This number of patients in our study is considered relatively low as compared with other studies like El Miedany and his colleagues who included 233 patients with carpel tunnel syndrome in their study [5]. Also another study performed in the year 2015 that included 200 patients with carpel tunnel syndrome [13].…”

Section: Discussionmentioning

confidence: 62%

Ultrasound Role in Diagnosis of Carpal Tunnel Syndrome and Postoperative Evaluation in Endoscopic Carpal Tunnel Release

Elsobky¹,

Kassem²,

Youssif³

et al. 2019

OJMN

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Carpal tunnel syndrome (CTS) represents about 90% of all entrapment neuropathies and is caused by entrapment of the median nerve while passing in the carpal tunnel. US has revealed equal effectiveness as magnetic resonance imaging (MRI) in diagnosis of CTS; however further attention should be given in case of equivocal results from nerve conduction studies (NCS) and/or before endoscopic surgical intervention. This study was conducted to evaluate the role of US in diagnosis and treatment of CTS which was done by endoscopic release. This is a prospective study including patients having CTS who were treated by endoscopic release between December 2017 and December 2018. All cases were evaluated by electrophysiological studies and US at the preoperative period. US was used to measure the cross sectional area (CSA) of the median nerve. Patients underwent endoscopic carpal tunnel release and were called for follow up after 1, 3, and 6 months for clinical and US assessment of the median nerve. Forty cases were included with mean age of 27.85 years. Numbness was the predominant symptom (92.5%) followed by wrist pain (85%). The mean diameter of median nerve showed a significant decrease at different time points (P < 0.001). The sensitivity of US in diagnosis of CTS was 87.5% in the preoperative assessment as compared to electrophysiological study. The sensitivity of US in detecting the improvement of CTS as compared to clinical examination increased from 28% at 1 month postoperative, 53.4% at 3 months to 92.1% at 6 months. Ultrasonography is a sensitive non-invasive diagnostic tool in diagnosis of CTS preoperative and diagnosis of improvement of the patients postoperatively especially at 6 months.

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“…Ultrasound imaging of the peripheral nerves can be used in order to assess their morphology, identify thickening, estimate the thickness of the epineurium, and calculate their cross-sectional area, as well as to determine their echogenicity and (on Doppler ultrasound) vascularity ( 1 - 3 ) . The ulnar nerve is most often affected, followed by the median and fibular nerves ( 4 ) .…”

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confidence: 99%

Thickening of the greater auricular nerve in leprosy: clinical correlation by ultrasound

et al. 2018

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Sonographic diagnosis of carpal tunnel syndrome: a study in 200 hospital workers

Cited by 14 publications

References 17 publications

Cross‐sectional area of the median nerve at the wrist: Comparison of sonographic, MRI, and cadaveric measurements

Cross‐sectional area of the median nerve at the wrist: Comparison of sonographic, MRI, and cadaveric measurements

Ultrasound Role in Diagnosis of Carpal Tunnel Syndrome and Postoperative Evaluation in Endoscopic Carpal Tunnel Release

Thickening of the greater auricular nerve in leprosy: clinical correlation by ultrasound

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