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Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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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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Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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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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Related Experiment Video

Updated: Apr 15, 2026

Assessment of Bone Fracture Healing Using Micro-Computed Tomography
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Assessment of Bone Fracture Healing Using Micro-Computed Tomography

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Distal Radius Volar Shear Fractures: A Computed Tomography Characterization and Analysis.

Eric J Gullborg1, Farhan Ahmad1, Caitlin M Ward1

  • 1Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL.

The Journal of Hand Surgery
|April 13, 2026
PubMed
Summary
This summary is machine-generated.

Computed tomography (CT) imaging reveals prevalent dorsal cortical extensions in volar shear fractures, often missed on radiographs. This detailed imaging aids in accurate diagnosis and surgical planning for distal radius fractures.

Keywords:
Computed tomographydistal radius fracturesdorsal cortical fracturesfracture morphologyvolar shear

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Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Trauma Surgery

Background:

  • Volar shear fractures of the distal radius present diagnostic challenges.
  • Radiographic evaluation may underestimate fracture complexity, particularly dorsal involvement.

Purpose of the Study:

  • To characterize volar shear fractures using computed tomography (CT).
  • To evaluate dorsal cortical involvement, articular complexity, and morphologic features for operative planning.

Main Methods:

  • Retrospective review of 110 CT-confirmed volar shear distal radius fractures.
  • Classification using the AO/OTA system and CT-based morphologic characterization.
  • Comparison of demographic and fracture characteristics across fracture types.

Main Results:

  • Dorsal cortical fractures present in 70% of volar shear fractures.
  • CT led to reclassification in 44% of B3 and 28% of transitional-B3 fractures.
  • Type C fractures showed increased fragmentation, longitudinal splits, and articular depression.

Conclusions:

  • Dorsal cortical extensions are common in volar shear fractures and may indicate articular complexity not seen on radiographs.
  • CT imaging offers crucial details for accurate diagnosis and guides comprehensive fixation strategies.