Table 4.

Preoperative the Japanese orthopedic association back pain evaluation questionnaire scores.

	O group	T group	P value
Low back pain	51 ± 7	39 ± 4	0.18
Lumbar function	58 ± 6	54 ± 4	0.64
Walking ability	27 ± 4	25 ± 3	0.71
Social life function	42 ± 5	43 ± 3	0.87
Mental health	50 ± 3	43 ± 3	0.18