The usefulness of latency difference test of fourth digit median- ulnar in carpal tunnel syndrome

2014 ◽  
pp. 188-191
Author(s):  
Zahide Mail Gürkan ◽  
Hülya Ertaşoğlu Toydemir ◽  
Lale Gündoğdu Çelebi ◽  
Münevver Gökyiğit
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Latency Difference ◽  
Fourth Digit ◽  
Tunnel Syndrome ◽  
Difference Test

Median to radial latency difference test in mild carpal tunnel syndrome

1989 ◽  
Vol 12 (11) ◽  
pp. 905-909 ◽  
Author(s):  
William S. Pease ◽  
Christopher D. Cannell ◽  
Ernest W. Johnson
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Latency Difference ◽  
Tunnel Syndrome ◽  
Difference Test

Lumbrical-interossei latency difference test in carpal tunnel syndrome

1995 ◽  
Vol 95 (4) ◽  
pp. P92-P93
Author(s):  
N. Tanaka ◽  
K. Kondo ◽  
Y. Noda ◽  
Y. Masakao ◽  
N. Chino
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Latency Difference ◽  
Tunnel Syndrome ◽  
Difference Test

scholarly journals Cooling modifies mixed median and ulnar palmar studies in carpal tunnel syndrome

2007 ◽  
Vol 65 (3b) ◽  
pp. 779-782 ◽  
Author(s):  
Rogério Gayer Machado de Araújo ◽  
João Aris Kouyoumdjian
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Ulnar Nerve ◽  
Carpal Tunnel ◽  
Nerve Conduction Study ◽  
Ulnar Nerve Compression ◽  
Latency Difference ◽  
Negative Peak ◽  
Tunnel Syndrome ◽  
Ice Water ◽  
Common Variable

Temperature is an important and common variable that modifies nerve conduction study parameters in practice. Here we compare the effect of cooling on the mixed palmar median to ulnar negative peak-latency difference (PMU) in electrodiagnosis of carpal tunnel syndrome (CTS). Controls were 22 subjects (19 women, mean age 42.1 years, 44 hands). Patients were diagnosed with mild symptomatic CTS (25 women, mean age 46.6 years, 34 hands). PMU was obtained at the usual temperature, >32°C, and after wrist/hand cooling to <27°C in ice water. After cooling, there was a significantly greater increase in PMU and mixed ulnar palmar latency in patients versus controls. We concluded that cooling significantly modifies the PMU. We propose that the latencies of compressed nerve overreact to cooling and that this response could be a useful tool for incipient CTS electrodiagnosis. There was a significant latency overreaction of the ulnar nerve to cooling in CTS patients. We hypothesize that subclinical ulnar nerve compression is associated with CTS.

scholarly journals Carpal tunnel syndrome in the elderly: nerve conduction parameters

2010 ◽  
Vol 68 (1) ◽  
pp. 87-92 ◽  
Author(s):  
Thiago Guimarães Naves ◽  
João Aris Kouyoumdjian
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Nerve Conduction ◽  
Motor Nerve ◽  
The Elderly ◽  
Nerve Conduction Studies ◽  
Motor Nerve Conduction ◽  
Latency Difference ◽  
Upper Limits ◽  
Tunnel Syndrome

OBJECTIVE: To establish nerve conduction parameters for carpal tunnel syndrome (CTS) electrodiagnosis in the elderly. METHOD: Thirty healthy subjects (65-86 years), 9 male and 21 female, were studied. Routine median and ulnar sensory and motor nerve conduction studies, median mixed palmar latency, comparative latency techniques median to ulnar (sensory, mixed and motor lumbrical-interossei), median to radial (sensory), and combined sensory index (CSI) were performed in both hands. RESULTS: The upper limits of normality (97.5%) were: median sensory distal latency 3.80 ms (14 cm); median motor distal latency 4.30 ms (8 cm); median palmar latency 2.45 ms (8 cm); lumbrical-interossei latency difference 0.60 ms (8 cm); comparative median to radial 0.95 ms (10 cm); comparative median to ulnar 0.95 ms (14 cm); comparative palmar median to ulnar 0.50 ms (8 cm); and CSI 2.20 ms. Sensory and mixed latencies were measured at peak. CONCLUSION: Our results establish new nerve conduction parameters for mild CTS electrodiagnosis in the elderly and will be helpful to reduce the number of false positive cases in this age.

Second lumbrical and interossei latency difference in Carpal Tunnel Syndrome

2008 ◽  
Vol 119 (12) ◽  
pp. 2789-2794 ◽  
Author(s):  
A.K. Meena ◽  
B. Srinivasa Rao ◽  
S. Sailaja ◽  
M. Mallikarjuna ◽  
R. Borgohain
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Latency Difference ◽  
Tunnel Syndrome

Second to fourth digit ratio (2D:4D) in women with carpal tunnel syndrome

2019 ◽  
Vol 137 ◽  
pp. 104829
Author(s):  
Anna Kasielska-Trojan ◽  
Aneta Sitek ◽  
Bogusław Antoszewski
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Digit Ratio ◽  
Fourth Digit ◽  
Tunnel Syndrome

scholarly journals Clinical Evaluation and Diagnostic Utilities of Different Nerve Conduction Tests in 100 Patients with Carpal Tunnel Syndrome

2017 ◽  
Vol 08 (04) ◽  
pp. 575-580
Author(s):  
Rameshwar Nath Chaurasia ◽  
Sagar S. Kawale ◽  
Abhishek Pathak ◽  
Vijaya Nath Mishra ◽  
Deepika Joshi
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Nerve Conduction ◽  
Data Entry ◽  
Clinical Profile ◽  
Mobile Phone Use ◽  
Latency Difference ◽  
Tunnel Syndrome ◽  
A Prospective Study ◽  
Sensory Latency

ABSTRACT Background and Purpose: The purpose of the study is to determine whether the clinical profile of patients with carpal tunnel syndrome (CTS) has been same over the years with the help of routine and comparative electrodiagnostic tests. Methods: A prospective study of 100 patients with suspected CTS was conducted without controls. Three provocative maneuvers were performed. Routine and comparison nerve conduction tests were performed, i.e., second lumbrical interossei motor latency difference (2 LIMLD), digit 4 median-ulnar sensory latency difference (D4MUSLD), palm wrist distal sensory latency difference (PWDSLD), and digit 1 median-radial sensory latency difference (D1MRSLD). Data entry, analysis, and statistical evaluation were done using International Business Machines Corporation Statistical Package for the Social Sciences statistics package (IBM, SPSS). Results: A total of 195 hands of 100 patients met the criteria for CTS. Forty-three percentage of patients were homemakers. Considering the rapidly changing communication technology, we observed 84% patients had aggravation of symptoms with continuous long-term daily mobile phone use (>30 min per session per day). We noted positive Tinel's sign in only 25%. Phalen's sign was positive in 53 right hands with mean duration of 11.49s (standard deviation [SD] ± 2.54 s) and was positive in 26 left hands with mean being 10.4 s (SD ± 1.91 s). The mean motor distal latency of median was 4.67 ms (SD ± 1.71 ms) and mean sensory distal latency of median was 3.24 ms (SD ± 1 ms). On internal comparison testing, mean difference in 2 LIMLD was 0.7 ± 0.3 ms, in D4MUSLD was 0.81 ± 0.32, in PWDSLD was 0.71 ± 0.20, and in D1MRSLD was 0.76 ± 0.32. Conclusion: Further analysis of clinical profile needs to be done, and new risk or provoking factors should be analyzed in patients with CTS.

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