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Related Concept Videos

Bones of the Upper Limb: Radius01:09

Bones of the Upper Limb: Radius

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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: Ulna01:15

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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: 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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Spinal Nerves: Plexus I01:22

Spinal Nerves: Plexus I

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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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Fractures: Bone Repair01:27

Fractures: Bone Repair

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Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
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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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Novel Triple-Loop Technique for Suturing TFCC Injuries without Transosseous Tunnel
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Distal Radioulnar Joint Instability in Distal Radius Fracture.

Hui-Kuang Huang1, Chin-Hsien Wu2, Jung-Pan Wang3

  • 1Department of Orthopaedics, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan.

The Journal of Hand Surgery Asian-Pacific Volume
|September 24, 2025
PubMed
Summary
This summary is machine-generated.

Distal radioulnar joint (DRUJ) instability after distal radius fracture (DRF) requires careful assessment and management. This review covers anatomy, assessment, and treatment options for acute and chronic DRUJ instability.

Keywords:
DRUJDistal radial fractureDistal radioulnar jointInstabilityMalunion

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Area of Science:

  • Orthopedics
  • Sports Medicine
  • Anatomy

Background:

  • Distal radioulnar joint (DRUJ) instability is an increasingly recognized complication following distal radius fracture (DRF).
  • Advances in DRF management highlight the importance of addressing associated DRUJ issues.
  • Understanding DRUJ anatomy is crucial for diagnosing and treating instability.

Purpose of the Study:

  • To provide a comprehensive review of DRUJ anatomy, instability assessment, and current treatment strategies.
  • To discuss management of both acute and chronic DRUJ instability.
  • To highlight associated conditions that may complicate clinical practice.

Main Methods:

  • Literature review focusing on DRUJ anatomy, instability assessment, and treatment modalities.
  • Analysis of non-operative and operative management strategies for DRUJ instability.
  • Categorization of chronic instability based on bony and soft-tissue pathology.

Main Results:

  • Open reduction and internal fixation (ORIF) for DRF can restore DRUJ stability in the acute setting.
  • Management of concomitant ulnar styloid fractures and triangular fibrocartilage complex (TFCC) tears is essential.
  • Chronic instability is classified into bony abnormalities (malunion, nonunion) and soft-tissue insufficiency (TFCC tears).

Conclusions:

  • Effective management of DRUJ instability requires addressing both the distal radius fracture and associated injuries.
  • Accurate diagnosis and tailored treatment are necessary for both acute and chronic presentations.
  • Recognizing associated conditions like subluxation and stiffness is vital for optimal patient outcomes.