Table 2.

Preoperative and Postoperative Short Form-36 (SF-36) Values

Parameter (SF-36)	Preoperative Mean Value (Standard Deviation)	12 Months ‘Postoperative Mean Value (Standard Deviation)	P Value
General health	75.7 (5.3)	92.4 (7.2)	.000
Mental health	74.8 (13.8)	86.1 (10.8)	.000
Change in general health	30.0 (18.9)	89.2 (12.5)	.000
Pain level	58.9 (12.0)	88.0 (7.7)	.000
Energy level	67.7 (11.5)	89.0 (8.8)	.000
Social functioning	79.6 (15.1)	92.5 (10.5)	.000
Physical functioning	56.1 (6.7)	87.7 (6.5)	.000
Role limitations due to emotional problems	76.4 (27.8)	86.6 (21.7)	.230
Role limitations due to physical health	39.2 (24.4)	87.1 (16.4)	.000