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Related Concept Videos

Bones of the Upper Limb: Ulna01:15

Bones of the Upper Limb: Ulna

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

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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...
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Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

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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...
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Arteries of the Upper Limbs01:12

Arteries of the Upper Limbs

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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...
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Spinal Nerves: Plexus I01:22

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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
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Muscles that Move the Forearm01:16

Muscles that Move the Forearm

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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...
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Updated: May 4, 2026

Development of a Novel Internal Fixation Model for Rat Radial Fractures: Fracture Healing Assessment and Dorsal Root Ganglion Isolation
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Distal ulna fractures.

Todd A Richards1, D Nicole Deal1

  • 1Department of Orthopedic Surgery, University of Virginia, Charlottesville, Virginia.

The Journal of Hand Surgery
|January 14, 2014
PubMed
Summary
This summary is machine-generated.

Distal ulna fractures are uncommon and challenging to treat due to complex anatomy and potential complications. This review covers their anatomy, pathology, treatment, and management of complications.

Keywords:
Distal ulnadistal radioulnar jointforearm fracturesulna fractureswrist fractures

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Area of Science:

  • Orthopedic Surgery
  • Traumatology
  • Upper Extremity Anatomy

Background:

  • Distal ulna fractures are rare in isolation, often associated with distal radius fractures.
  • The intricate relationship between the distal ulna, radioulnar joint, and triangular fibrocartilage complex complicates treatment.
  • Fracture comminution and thin soft tissues present challenges for surgical fixation and implant management.

Purpose of the Study:

  • To provide a comprehensive review of distal ulna fractures.
  • To discuss the anatomy, pathology, and current treatment strategies.
  • To outline potential complications and salvage procedures for these injuries.

Main Methods:

  • Review of current literature on distal ulna fractures.
  • Analysis of anatomical and biomechanical factors.
  • Synthesis of treatment options and complication management.

Main Results:

  • Distal ulna fractures require careful consideration of associated injuries and anatomical structures.
  • Surgical fixation can be difficult due to comminution, potentially leading to hardware prominence.
  • Management strategies involve addressing primary fracture healing and secondary complications.

Conclusions:

  • Understanding the complex anatomy is crucial for effective treatment of distal ulna fractures.
  • Challenges in fixation and soft tissue coverage necessitate tailored surgical approaches.
  • Comprehensive management includes addressing complications and considering salvage options.