Distal Radial Fractures

Investigations

Xrays

Three important radiographic measures

  1. Palmar slope of the distal end of the radius, measured on the lateral
    • averages 11 to 12°
  2. Radial inclination, measured on the AP
    • averages 22-23°
  3. Radial length, measured on the AP, between the tip of the radial styloid process & the distal articular surface of the ulnar head
    • averages 11-12 mm

Function is impaired if:

  1. More than 20° of dorsal angulation
  2. Less than 11° of radial inclination
  3. More than 2mm of radial shift

Function & intra-articular involvement

  • articular involvement in low energy fractures in older post-menopausal women has little effect on the generally favourable outcome in these patients
  • In younger patients it is important to reduce the intra-articular fracture to within 2mm or symptomatic post traumatic arthritis will develop

CT Scan