Table 1. IDEAL classification system: rationale and scoring .

	Parameter	0 points	1 point
I	Joint incongruity	No	Step or gap > 2 mm
D	Displacemen	No	Requires reduction
E	Energy1	Low	High
A	Age	< 60 years old	³ 60 years old
L	Associated lesions2	Absent	Present

¹Low = fall from standing height, or High = other; ²Open fracture/carpal fractures and/or instability/distal ulnar fractures.