Application of a new anatomic hook-rod-pedicle screw system in young patients with lumbar spondylolysis: A pilot study

Table 1 Visual analog scale and Oswestry disability index scores at each time point

Measure	Baseline	3 mo	6 mo	12 mo	24 mo
Back pain VAS	6.73 ± 0.88	2.20 ± 0.86a	1.47 ± 0.92a	1.13 ± 0.64a	0.73 ± 0.59a
ODI	58.20 ± 8.99	21.73 ± 6.24a	16.40 ± 4.55a	12.13 ± 3.72a	7.87 ± 4.97a
Donor area VAS	-	1.93 ± 0.96	0.67 ± 0.82	0.40 ± 0.51	0.20 ± 0.41

^aP < 0.05 vs the baseline values. VAS: Visual analog scale; ODI: Oswestry disability index.

Table 2 Modified Macnab rating at different time points

Postoperative time	Excellent	Good	Fair	Poor
3 mo	5 (33)	7 (47)	3 (20)	0
6 mo	6 (40)	8 (53)	1 (7)	0
12 mo	8 (53)	7 (47)	0	0
24 mo	10 (67)	5 (33)	0	0

Data are presented as n (%).