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Related Concept Videos

Assessment of radial pulse01:11

Assessment of radial pulse

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:
Spinal Nerves: Plexus I01:22

Spinal Nerves: Plexus I

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...
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...
Assessment of apical radial pulse01:25

Assessment of apical radial pulse

Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
Pulse Assessment Sites01:11

Pulse Assessment Sites

Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
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...

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Related Experiment Video

Updated: Jun 15, 2026

Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies
08:56

Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies

Published on: October 7, 2021

Predicting radial nerve location using palpable landmarks.

C L Cox1, D Riherd, R S Tubbs

  • 1Department of Orthopaedics and Rehabilitation, Vanderbilt University Medical Center, Nashville, Tennessee 37232-8828, USA.

Clinical Anatomy (New York, N.Y.)
|March 3, 2010
PubMed
Summary
This summary is machine-generated.

This study precisely maps the radial nerve (RN) and its branches using palpable anatomical landmarks. Findings aid surgeons in accurately locating the radial nerve and its divisions during procedures.

Related Experiment Videos

Last Updated: Jun 15, 2026

Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies
08:56

Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies

Published on: October 7, 2021

Area of Science:

  • Anatomy
  • Surgical anatomy
  • Neuroscience

Background:

  • The radial nerve (RN) is crucial for upper limb function.
  • Precise localization of the RN and its branches is vital for surgical safety and efficacy.
  • Existing anatomical references may lack sufficient detail for palpable landmark-based navigation.

Purpose of the Study:

  • To predict the anatomical location of the radial nerve (RN) and its key divisions.
  • To correlate RN and branch positions with easily palpable external landmarks on the humerus and radius.
  • To provide quantitative data for surgical planning and anatomical education.

Main Methods:

  • Dissection of 34 paired human upper limbs.
  • Localization of the radial nerve at the humeral spiral groove (SG) and lateral intermuscular septum (LIS).
  • Identification of the radial nerve's division into the posterior interosseous nerve (PIN) and radial sensory nerve (RSN), and the PIN's position at the anterior radial neck (AN).
  • Measurement of humeral and radial lengths and correlation with nerve locations.

Main Results:

  • The RN was located at the SG, averaging 48% of humeral length distal to the greater tuberosity.
  • The RN pierced the LIS at an average of 38% of humeral length proximal to the lateral epicondyle (LE).
  • The PIN/RSN division occurred approximately 1.0 cm distal to the LE.
  • The PIN was identified at the AN, averaging 10% of radial length distal to the radial head's articular surface.

Conclusions:

  • Palpable anatomical landmarks provide reliable reference points for locating the radial nerve and its branches.
  • The quantitative data derived from this study can enhance surgical precision and reduce iatrogenic injury.
  • This research offers valuable anatomical insights for orthopedic and neurosurgical procedures involving the posterior humerus and forearm.