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radius

radius

10 4.8
The outer, shorter bone in the forearm on the thumb side
  • noun
  • /ˈreɪdiəs/
  • Specialized
: radio
  • He's got a compound fracture in his right radius.
  • a radius fracture
  • distal radius
  • radius and ulna

Examples

  • On examination, a child with a distal radius fracture usually has pain, swelling, and/or deformity at the wrist.

    Academic text (2006)
  • The doctor explained that the radius was fractured during the fall.

  • Reaching back into the box under the table, he hands me a broken radius arm bone about five inches long.

    Academic text (2008)
  • Okay, looks like a fractured left radius.

  • Right, look, when you're talking to your doctor, just tell him you have a spiral fracture of the left radius.

  • Numerous studies have shown the radius to be the most commonly injured long bone in the pediatric population (Wilkins, 2001).

    Academic text (2006)
  • Fractures of the distal radius are usually classified as either articular or non-articular.

    Academic text (2003)
  • She fractured the radius and ulna on her left forearm, cracked the 10th, 11th and 12th ribs on her left side and banged her head pretty good.

  • The most common fractures in children occur in the upper extremity at the distal radius (wrist), elbow (supracondylar), and clavicle (collarbone) (Landin, 1997).

    Academic text (2006)
  • He showed me the X-ray, which clearly indicated a break in the radius bone.

Compounds

radius of curvature
  • Specialized
1 7.7

The distance from a curve to the center of the circle that best fits the curve at a point

radius vector
  • Specialized
1 8.7

A straight line from a point to a central point, for example the center of rotation or the origin

Surface Forms

radius singular
radii plural

Etymology

Radius comes from Latin radius, 'rod' or 'spoke', because the forearm bone looks like a small rod running from the elbow to the wrist on the thumb side. So the bone is called the radius.