Modification to Mirels scoring system location component improves fracture prediction for metastatic disease of the proximal femur

Table 3 Outcomes of Mirels clinical classification

Scoring System	Original Mirels		Modified Mirels-ss (site specific)		Modified Mirels-ax (axial)
Clinical Outcome	Fx	No Fx	Fx	No Fx	Fx	No Fx
Low Fx Risk (0–7)	0	7	0	17	0	15
Borderline (8)	0	11	0	9	0	10
Impending Fx (9–12)	8 (100% TP)	22 (55% FP)	8 (100% TP)	14 (35% FP)	8 (100% TP)	15 (38% FP)

Prediction of fracture (Fx) and no fracture (No Fx) cases using the three scoring schemes is shown for low, borderline, and impending fracture scores. Number of patients in each group are shown.
TP True positive, FP False positive

ISSN: 1471-2474