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Carpal tunnel syndrome: Correlations between pressure measurement and intraoperative electrophysiological nerve study

✍ Scribed by Dr. Riccardo Luchetti; Dr. Rudolf Schoenhuber; Dr. Mauro Alfarano; Dr. Stefano Deluca; Dr. Giorgio De Cicco; Dr. Antonio Landi

Book ID
102536244
Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
404 KB
Volume
13
Category
Article
ISSN
0148-639X

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✦ Synopsis

In 19 carpal tunnel syndrome (CTS) patients and 4 control subjects a catheter was introduced into the carpal tunnel and slowly retracted in 5 mm steps. Pressure was measured with the continuous infusion technique. In the same group of patients and controls, median nerve antidromic sensory action potential (aSAP) was detected intraoperatively stimulating proximally (Sl), in the center (S2), and distally (S3) to the carpal tunnel and recording from the third finger (R). Sensory conduction velocity (SCV) and aSAP amplitude were considered in SI-S2, S2-S3 and S3-R segments. The intracarpal tunnel pressure was significantly higher in CTS patients than in controls, with the highest values located between 25 and 35 mm distal to the proximal border of the flexor retinaculum. SCV and aSAP amplitude were also decreased most often in the distal part (52-53) of the carpal tunnel.

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