Isolated fracture of the greater tuberosity: prediction of superior and posterior fracture displacement on plain radiographs

The CT-based technique accurately measured fragment displacement in the saw-bone model. For fractures with ≥5 mm displacement, "lat" was the best predictor of combined displacement (interobserver reliability: 0.82-0.94). However, in the reported cohort, "lat" underestimated the "true" fragment displacement. Therefore, in "lat" measurements ≥ 3 mm, a CT scan for quantification of fragment displacement should be considered. However, these findings must be confirmed in bigger patient populations before clinical translation.