Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Muscles of the Forearm that Move the Hand and Fingers01:17

Muscles of the Forearm that Move the Hand and Fingers

1.8K
The muscles of the forearm that move the wrist, hand, and digits are numerous and diverse. They can be classified into two groups based on their location and function — the anterior and posterior compartment muscles.
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...
1.8K
Bones of the Upper Limb: Radius01:09

Bones of the Upper Limb: Radius

3.9K
The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
The radius has a nail-shaped head, and a...
3.9K
Bones of the Upper Limb: Ulna01:15

Bones of the Upper Limb: Ulna

3.5K
The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side...
3.5K
Spinal Nerves: Plexus I01:22

Spinal Nerves: Plexus I

1.7K
Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
1.7K
Muscles that Move the Forearm01:16

Muscles that Move the Forearm

3.0K
The muscles that move the forearms can be divided into four groups: forearm flexors, forearm extensors, forearm pronators, and forearm supinators. The flexors and extensors act on the elbow joint, while the pronators and supinators act on the radioulnar joints.
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...
3.0K
Arteries of the Upper Limbs01:12

Arteries of the Upper Limbs

1.5K
The subclavian artery transitions into the axillary artery as it exits the chest and enters the axillary region. This artery is critical for supplying blood to the shoulder area, including the head of the humerus, through the humeral circumflex arteries. As the vessel continues into the upper arm or brachium, it becomes the brachial artery. This artery plays a key role in vascularizing the brachial region and bifurcates at the elbow into several branches. These branches include the deep...
1.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Malignant Transformation of a Brain Neurenteric Cyst: A Case Report.

Iranian journal of pathology·2026
Same author

Anti-skid Genioplasty Osteotomy by Pre-scoring with a Fissure Bur (Technical Note).

World journal of plastic surgery·2026
Same author

Comprehensive Profiling of Cell Surface Proteins in Testicular Germ Cell Tumors.

Cancer research communications·2026
Same author

Association of Type 2 Diabetes Mellitus With Dietary Vitamin B12 Intake in Individuals With Different Fat Mass and Obesity-Associated (FTO) Genotypes.

Food science & nutrition·2026
Same author

Hypokalemic Periodic Paralysis in a Young Woman With Mast Cell Activation Syndrome: A Case Report of an Atypical Presentation Associated With an Ultra-Rare CACNA1S Variant.

Clinical case reports·2026
Same author

Charcoal localization of metastatic axillary lymphadenopathy in breast cancer patients: concordance with sentinel lymph node biopsy.

Breast cancer (Tokyo, Japan)·2026

Related Experiment Video

Updated: Nov 4, 2025

Metacarpal Small Incision for Carpal Tunnel Syndrome
04:08

Metacarpal Small Incision for Carpal Tunnel Syndrome

Published on: April 5, 2024

828

Do carpal Tunnel Hands Have Different Shape Compare to Normal Hands?

Mohamad Sahebalam1, Golnaz Ghayyem Hassankhani1, Amin Azhari1

  • 1Orthopedic Research Center, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.

The Archives of Bone and Joint Surgery
|May 24, 2021
PubMed
Summary

Carpal tunnel syndrome (CTS) hands have distinct anatomical features, including shorter fingers and wider palms. The ratio of thumb to third finger length is the most effective diagnostic indicator for CTS hands.

Keywords:
Carpal tunnel syndromeEMG- NCVElectrodiagnostic studiesHand shapeRadiological

More Related Videos

Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies
06:40

Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies

Published on: January 11, 2019

11.9K

Related Experiment Videos

Last Updated: Nov 4, 2025

Metacarpal Small Incision for Carpal Tunnel Syndrome
04:08

Metacarpal Small Incision for Carpal Tunnel Syndrome

Published on: April 5, 2024

828
Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies
06:40

Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies

Published on: January 11, 2019

11.9K

Area of Science:

  • Orthopedics
  • Radiology
  • Anatomy

Background:

  • Carpal tunnel syndrome (CTS) results from median nerve entrapment.
  • Hand, wrist, and carpal tunnel morphology may predispose individuals to idiopathic CTS.
  • This study investigated the morphological and radiological characteristics of hands in CTS patients.

Purpose of the Study:

  • To evaluate the morphology and radiologic scales in carpal tunnel syndrome (CTS) hands.
  • To identify anthropometric risk factors associated with CTS.
  • To determine the best diagnostic index for identifying CTS hands.

Main Methods:

  • Prospective study enrolling patients undergoing upper extremity electrodiagnostic studies.
  • Patients classified into CTS and control groups based on nerve conduction velocity (NCV).
  • Hand radiographs analyzed for metacarpal length to wrist length (carpal ratio), metacarpal length to width, third to first metacarpal length, hand length, and hand volume indices.

Main Results:

  • Significant differences observed in body mass index, metacarpal length/width, first/third metacarpal length, and wrist circumference/hand volume ratios between groups.
  • First metacarpal length/third metacarpal length and third metacarpal length/palm height associated with higher CTS prevalence.
  • Receiver operating characteristic curve analysis identified cutoff points for first/third metacarpal length and wrist circumference/distal flexor wrist crease ratios.

Conclusions:

  • CTS hands exhibit shorter fingers, wider palms, and greater volume compared to non-CTS hands.
  • Higher carpal ratio correlated with CTS severity.
  • The ratio of thumb to third metacarpal length is the most effective index for diagnosing CTS hands.