The Inlet and Outlet Ratio: Retrospective and Prospective Study on an Improved Diagnostic Ultrasound Tool for Carpal Tunnel Syndrome

Hirsiger, Stefanie; Schlimme, Nora; Rossel, Jean‐Benoît; Christen, Samuel; Grobbelaar, A.O.; Vögelin, Esther

doi:10.1016/j.jhsg.2023.01.018

Cited by 1 publication

(1 citation statement)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…18 In a recent study, the diagnostic threshold value was found to be optimal at 11.75 mm². 19 Similarly, in another study, MN-CSA was found to be higher than 9.44±2.68 mm² in the control group, although not confirmed with EDx. 20 In a meta-analysis focusing on this topic, 2292 wrists were examined, with MN-CSA being 11.64 mm² for mild CTS, 13.74 mm² for moderate CTS, and 16.80 mm² for severe CTS (20).…”

Section: Discussionmentioning

confidence: 80%

Comparison of ultrasonographic parameters in the diagnosis of carpal tunnel syndrome in pregnancy

Bayraktarlı,

Şahin,

Işın

2024

Journal of Health Sciences and Medicine

View full text Add to dashboard Cite

Aims: The aim is to evaluate sonographic parameters in pregnant women diagnosed with carpal tunnel syndrome compared to electrodiagnostic tests, to determine whether these parameters have sufficient accuracy to allow their use in clinical practice. Methods: This retrospective study examines pregnant women aged 18-40 in the 3rd trimester who received a final diagnosis of carpal tunnel syndrome between 2021-2023 at Prof. Dr. Cemil Taşçıoğlu City Hospital. Pregnant women with symptomatic complaints were divided into two groups: those with positive electrodiagnostic test results indicating carpal tunnel syndrome and those with negative electrodiagnostic test results, forming the control group. All pregnant women participating in the study had their median nerve cross-sectional area, flexor carpi radialis, cross-sectional area, wrist-to-forearm ratio, and MN-CSA/FCR ratio (expressed as a percentage called NTR) values examined. Results: In pregnant women with carpal tunnel syndrome, the median nerve cross-sectional area values were observed to surpass those in the control cohort (10.06±3.24 vs. 7.84±2.52)(p0.84%. The best cut-off for wrist-to-forearm ratio values was calculated as >1.4 mm². A receiver operating characteristic curve was generated, and the wrist-to-forearm ratio cut-off point of 1.4 showed a sensitivity of 97.1% and a specificity of 69.2%. Conclusion: Ultrasonography is useful in the diagnosis of pregnancy-related CTS. It has provided comparable results to electrodiagnostic tests and is additionally practical, cost-effective, and swift.

show abstract