Table 1. Geissler classification.

Grade	Description
I	Attenuation/hemorrhage of SLIL as seen from the radiocarpal joint. No incongruency of carpal alignment in the midcarpal space.
II	Attenuation/hemorrhage of SLIL as seen from the radiocarpal joint. Incongruency/step-off as seen from midcarpal space. A slight gap (less than width of a probe) between carpals may be present.
III	Incongruency/step-off of carpal alignment is seen in both the radiocarpal and midcarpal spaces. The probe may be passed through the gap between carpals.
IV	Incongruency/step-off of carpal alignment is seen in both the radiocarpal and midcarpal spaces. Gross instability with manipulation is noted. A 2.7-mm arthroscope may be passed through the gap between carpals.