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Table 1 Superior AC joint displacement and distal clavicle overriding in each sectioning stage on the cross-body adduction view

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

0/6

Stage 1

0.3 ± 0.7

4.2 ± 15.0

0/6

Stage 2

6.5 ± 1.1

56.2 ± 15.8

5/6

Stage 3

10.7 ± 1.4

84.3 ± 30.6

6/6

  1. a Data are reported as mean ± standard deviations
  2. bAC joint height = 11.3 ± 1.6
  3. cCalculated as [(change in superior displacement from stage 0)/(AC joint height)] × 100. Data are reported as mean ± standard deviations