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Related Concept Videos

Bones of the Upper Limb: Ulna01:15

Bones of the Upper Limb: Ulna

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 of the...
Bones of the Upper Limb: Radius01:09

Bones of the Upper Limb: Radius

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 short...
Ultrasonography01:17

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...
Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...

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Related Experiment Video

Updated: Jun 8, 2026

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

Imaging the distal radioulnar joint.

Kimberly K Amrami1, Steven L Moran, Richard A Berger

  • 1Division of Body Magnetic Resonance Imaging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA. amrami.kimberly@mayo.edu

Hand Clinics
|October 19, 2010
PubMed
Summary

Imaging the distal radioulnar joint (DRUJ) requires understanding its complex anatomy. Radiography is the first step, followed by MRI for ligament evaluation and dynamic CT for instability, ensuring tailored patient care.

Related Experiment Videos

Last Updated: Jun 8, 2026

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

Area of Science:

  • Orthopedic Imaging
  • Radiology
  • Anatomy

Background:

  • The distal radioulnar joint (DRUJ) is crucial for wrist function.
  • Complex anatomy involving bone, muscle, and ligaments contributes to DRUJ stability.
  • Accurate imaging is essential for diagnosing DRUJ pathologies.

Purpose of the Study:

  • To outline the imaging approach for the distal radioulnar joint (DRUJ).
  • To emphasize the importance of anatomical knowledge and proper technique in DRUJ imaging.
  • To guide the selection of appropriate imaging modalities based on clinical presentation.

Main Methods:

  • Standard radiography for initial assessment of the wrist.
  • High-resolution 3T MRI for detailed evaluation of ligamentous structures.
  • Dynamic CT scan when physical examination indicates DRUJ instability.

Main Results:

  • Radiography serves as the foundational imaging modality for the wrist.
  • MRI effectively visualizes the ligamentous structures critical for DRUJ integrity.
  • Dynamic CT is indicated for assessing instability, complementing other imaging techniques.

Conclusions:

  • A systematic imaging approach, starting with radiography and progressing to MRI or dynamic CT as needed, is vital for DRUJ evaluation.
  • Meticulous attention to imaging technique across all modalities enhances diagnostic accuracy.
  • Effective radiologist-surgeon communication ensures tailored imaging for optimal patient management and resource utilization.