Table 1. Vertebral height loss criteria for Genant semi-quantitative (GSQ) grading and extended semi-quantitative grading (eSQ)*.

Variable	Extent of vertebral height loss
	<20%	≥20–25%	>25%–1/3	>1/3–40%	>40%–2/3	>2/3
Genant SQ	Grade-0.5	Grade-1	Grade-2		Grade-3
Genant SQ		Mild	Moderate		Severe
Extended SQ	Grade-1	Grade-2	Grade-3	Grade-4	Grade-5	Grade-6
Extended SQ	Minimal (min)	Mild (mil)	Moderate (mod/m)	Moderately-severe (mod/s)	Severe (sev)	Collapsed (col)

*, vertebrae with normal radiographical morphology is noted as grade-0.