Related Experiment Video
Updated: Aug 19, 2026

Utility of Dissociated Intrinsic Hand Muscle Atrophy in the Diagnosis of Amyotrophic Lateral Sclerosis
Published on: March 4, 2014
Self-administered hand symptom diagram for carpal tunnel syndrome diagnosis
1Division of Neurology, Department of Medicine, National University Hospital, 5 Lower Kent Ridge Road, Singapore 119074, Republic of Singapore.
Abstract:
In a prospective case series in Singapore we studied whether a hand symptom diagram can be used to predict carpal tunnel syndrome as defined by standardized clinical and neurophysiological protocol. Forty patients (mean age, 48 years, range 18-76) with carpal tunnel syndrome found it difficult to complete the hand diagram, and only four patients were able to mark it helpfully. There was no relation between drawings, clinical and neurophysiological parameters. A self-administered hand symptoms diagram is not useful for supporting a diagnosis of carpal tunnel syndrome amongst Singaporeans. Cultural factors may significantly influence subjective assessment scales such as the self-administered hand symptom diagram, which has been found effective in North American populations.
Related Concept Videos
Assessment of radial pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Muscles 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,...
Assessment of the Cardiovascular System II: Inspection
Head and Neck
Assessment of the Cardiovascular System III: Palpation
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

