Clinical and Radiological Outcomes of Extracorporeal Shock Wave Therapy in Early-Stage Femoral Head Osteonecrosis

Table 2

The VAS and Harris hip scores before and after ESWT.

		After ESWT (months)
Variable	Before ESWT	3	6	12	24
VAS	6.7 ± 2.1 (3-9)	2.4 ± 2.2 (0-5)	1.3 ± 1.2 (0-4)	0.5 ± 0.4 (0-2)	0.8 ± 1.1 (0-3)
P-value		<0.001	<0.001	<0.001	<0.001
HSS	73.2 ± 9.8 (53-89)	88.7 ± 7.1 (62-100)	91.7 ± 7.8 (65-100)	97.2 ± 2.2 (72-100)	96.7 ± 3.1 (73-100)
P-value		<0.001	<0.001	<0.001	<0.001

The values are given as the mean and standard deviation with the range in parentheses. VAS: visual analog scale; ESWT: extracorporeal shock wave therapy; and HSS = Harris hip score.