From: Acromioclavicular joint instability on cross-body adduction view: the biomechanical effect of acromioclavicular and coracoclavicular ligaments sectioning
Amount of Displacement, mma
% of displacementb, c
Distal clavicle overriding
Stage 0
0
0/6
Stage 1
0.3 ± 0.7
4.2 ± 15.0
Stage 2
6.5 ± 1.1
56.2 ± 15.8
5/6
Stage 3
10.7 ± 1.4
84.3 ± 30.6
6/6