Lidstrom classified deformity of the wrist following a fracture of the distal radius. This was later used by Frykman in his classification of distal radial fractures.
Parameters:
(1) angulation
(2) shortening in mm
Angulation
Shortening
Deformity
<= 90°
AND
< 3 mm
none or insignificant
91 - 100°
OR
3 - 6 mm
slight
101 - 114°
OR
7 - 11 mm
moderate
>= 115°
OR
>= 12 mm
severe
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