Figure 1.

Clavicle shortening and displacement evaluation. (a) Clavicular shortening, defined as the overlap of proximal and distal fragments, was assessed as a percentage of the ipsilateral clavicular length on a standard antero-posterior view $=\frac{O}{M+L}\%$. (b) The amount of fragment displacement, defined as the amount of vertical translation, was assessed as a percentage of the clavicle shaft width at the fracture site on a 20° cephalic tilt view of the clavicle. $D=\frac{A}{B}\%$ O = overlapping; M = medial clavicle fragment length; L = lateral clavicle fragment length; A = cortex-to-cortex distance; B = clavicle width; S = shortening; D = displacement.