Analysis of clinical effect and radiographic outcomes of Isobar TTL system for two-segment lumbar degenerative disease: a retrospective study

Table 1 General data of the two study groups^a

General data	Isobar TTL (n = 20)	Rigid (n = 21)	P
Age (years)	64 ± 7.78	61 ± 6.50	0.338
Sex
Female	12 (60%)	10 (47.62%)	0.427
Male	8 (40%)	11 (52.38%)	0.427
Follow-up (months)	22.00 ± 7.01	25.18 ± 4.75	0.227
Operation time (min)	163.64 ± 42.42	185.67 ± 27.80	0.138
Intraoperative blood loss (mL)	245.45 ± 145.70	445.00 ± 305.00	0.067
Hospital stay (days)	20 ± 4.22	18.6 ± 1.92	0.187

^aData are presented as mean ± standard deviation
P values are based on the t test; P > 0.05 for the Isobar TTL group compared with the rigid fixation group

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