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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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Fractures: Bone Repair01:27

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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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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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Related Experiment Video

Updated: Sep 25, 2025

Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects
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Simplifying the Volar Distraction Osteotomy for Distal Radius Malunion Repair.

Luke P Robinson1, Rashad H Usmani2, Victor Fehrenbacher1

  • 1Department of Orthopaedic Surgery, Norton Louisville Arm and Hand, Louisville, Kentucky.

Journal of Wrist Surgery
|April 28, 2022
PubMed
Summary
This summary is machine-generated.

This study presents a simplified technique for correcting distal radius malunion using distraction osteotomy and bone cement. The method significantly improved radiographic alignment and patient function, offering a viable surgical option for malunited distal radius fractures.

Keywords:
corrective osteotomydistal radius fracturemalunion

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Area of Science:

  • Orthopedic Surgery
  • Traumatology
  • Bone Healing

Background:

  • Extra-articular distal radius fractures are often managed nonoperatively, particularly in elderly patients.
  • Malunions can develop during nonoperative treatment, necessitating corrective surgery to restore anatomy and function.
  • Distal radius malunion presents a significant challenge in orthopedic practice.

Purpose of the Study:

  • To describe a novel technique for correcting distal radius malunion.
  • To evaluate the clinical and radiographic outcomes of this distraction-type corrective osteotomy.
  • To assess the efficacy of a novel resorbable calcium phosphate bone cement in this procedure.

Main Methods:

  • A distraction-type volar osteotomy was performed on 13 distal radius malunions in 12 patients.
  • A volar plate specific distraction device and a resorbable calcium phosphate bone cement (Trabexus) were utilized.
  • Pre- and postoperative radiographic measures (radial inclination, volar tilt, ulnar variance) and clinical assessments (range of motion, grip strength) were compared.

Main Results:

  • Statistically significant improvements were observed in volar tilt (-19.8 to +0.5 degrees) and ulnar variance (+2.8 to -0.4 mm).
  • Significant gains in grip strength and wrist/forearm range of motion were recorded postoperatively.
  • An average of 56.0% of the Trabexus bone substitute remained at final follow-up.

Conclusions:

  • The described simplified technique of distraction corrective osteotomy is effective for treating distal radius malunion.
  • This approach leads to improved clinical and radiographic outcomes for patients.
  • The use of resorbable calcium phosphate bone cement demonstrated good stability and integration.