Fig. 3
From: Comparative outcome of different treatment options for fragility fractures of the sacrum
Frequency distribution of the fracture zones according to Denis et al. [24]. Image top right: Fracture zones marked on a semi-coronal MRI scan oblique to the sacrum. STIR weighting shows clear oedema on the right as an expression of a non-displaced fracture in the type 1 zone and on the left in the type 1 and 2 zones. A small area of oedema is also found in the caudal region of the type 3 zone