Related Experiment Video
Updated: Aug 14, 2026
Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies
Published on: January 11, 2019
The carpal-compression test. An instrumented device for diagnosing carpal tunnel syndrome
1Hood River Memorial Hospital, Oregon.
Abstract:
A study was performed to analyze the efficacy of an instrumented carpal-compression device in the diagnosis of carpal tunnel syndrome. This device provides a direct measurement of the amount of applied pressure necessary to elicit symptoms of carpal tunnel syndrome. A positive test is indicated by the reproduction of numbness, tingling, or dysesthesia in the distribution of the median nerve within 30 seconds. The study group consisted of 30 patients in whom 48 hands had clinical symptoms and positive electrodiagnostic findings of carpal tunnel syndrome; 50 hands of 25 asymptomatic individuals were studied as controls. This study found that the instrumented carpal-compression test had an 89% sensitivity and a 96% specificity in diagnosing carpal tunnel syndrome. The instrumented device described in this study is lightweight and simple to use, and provides a rapid and inexpensive method of screening for carpal tunnel syndrome.
Related Concept Videos
01:30Equipments Used To Measure Blood Pressure
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
01:15Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
01:16Muscles of the Forearm that Move the Hand and Fingers
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi radialis,...