Distal radius x-ray: Difference between revisions
Ostermayer (talk | contribs) (Text replacement - "Category:Rads" to "Category:Radiology") |
Neil.m.young (talk | contribs) (Text replacement - "fx " to "fracture ") |
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==Checklist== | ==Checklist== | ||
*Is there loss of normal anatomy (e.g. | *Is there loss of normal anatomy (e.g. fracture displacement or angulation, loss of radial height) | ||
*Is there involvement of the radiocarpal or distal radioulnar joint? | *Is there involvement of the radiocarpal or distal radioulnar joint? | ||
*Is there discontinuity of the articular surface or diastasis (separation) of the articular fragments? | *Is there discontinuity of the articular surface or diastasis (separation) of the articular fragments? | ||
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* Radial height (Distance between distal tip of radial styloid and articular surface of the radius) | * Radial height (Distance between distal tip of radial styloid and articular surface of the radius) | ||
** Normal ~ 10-17mm | ** Normal ~ 10-17mm | ||
*** Often smaller with comminuted or impacted | *** Often smaller with comminuted or impacted fracture | ||
* Ulnar variance (Distance between ulnar-side articular surface of radius and the ulnar carpal surface) | * Ulnar variance (Distance between ulnar-side articular surface of radius and the ulnar carpal surface) | ||
** Normally 1-2mm | ** Normally 1-2mm | ||
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* Palmar Tilt (angle between line perpendicular to long axis of radial shaft and line through the apices of the palmar and dorsal rims of the radius | * Palmar Tilt (angle between line perpendicular to long axis of radial shaft and line through the apices of the palmar and dorsal rims of the radius | ||
** Normally 10o-25o | ** Normally 10o-25o | ||
*** Often smaller with | *** Often smaller with fracture | ||
===Oblique=== | ===Oblique=== | ||
Revision as of 03:09, 3 July 2016
Checklist
- Is there loss of normal anatomy (e.g. fracture displacement or angulation, loss of radial height)
- Is there involvement of the radiocarpal or distal radioulnar joint?
- Is there discontinuity of the articular surface or diastasis (separation) of the articular fragments?
- Are high-risk features present (severe comminution, articular step-off >2 mm, fracture-dislocation)?
Specific Views
PA
- Radial inclination (angle between line perpendicular to long axis of radius and line between radial styloid and ulnar corner of lunate fossa)
- Normal = 15-25 degrees
- Often smaller with fx
- Normal = 15-25 degrees
- Radial height (Distance between distal tip of radial styloid and articular surface of the radius)
- Normal ~ 10-17mm
- Often smaller with comminuted or impacted fracture
- Normal ~ 10-17mm
- Ulnar variance (Distance between ulnar-side articular surface of radius and the ulnar carpal surface)
- Normally 1-2mm
Lateral
- Palmar Tilt (angle between line perpendicular to long axis of radial shaft and line through the apices of the palmar and dorsal rims of the radius
- Normally 10o-25o
- Often smaller with fracture
- Normally 10o-25o
Oblique
- May reveal intra-articular involvement not seen on other views