Related Experiment Video
Updated: Jul 8, 2026

Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies
Published on: January 11, 2019
[Carpal tunnel syndrome & cubital tunnel syndrome]
1Dept. Hand Surgery, Faculty & Graduate School of Medicine, Nagoya Univ.
Abstract:
Carpal tunnel syndrome (CTS) and cubital tunnel syndrome (Cub.TS) are the two most common entrapment syndromes. Development of several validated outcome assessments have allowed conducting large scale epidemiological studies worldwide for the last decade regarding CTS, which have been providing reliable basic information. These studies have shown that CTS is more common than had been expected. It is estimated that lifetime risk of acquiring CTS is 10%, the annual incidence is 0.1% among adults, and overall prevalence is 2.7% among the general population. The most common cause is idiopathic inflammation of the flexor tendon sheath induced by activities involving repetitive wrist movement. In contrast, they are not available for Cub.TS and most data are derived from case series or expert opinion, therefore, information concerning Cub.TS is less reliable. In this lecture, the author is trying to offer up-date information of these entrapment neuropathies regarding their pathophysiology, epidemiology, and tips & pitfalls of diagnosis and treatment.
Related Concept Videos
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,...
Spinal Nerves: Plexus I
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
Bones of the Upper Limb: Ulna
Arteries of the Upper Limbs
Bones of the Upper Limb: Radius
The radius has a nail-shaped head, and a short...
Muscles that Move the Forearm
Forearm Flexors
The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
