Efficacy of percutaneous kyphoplasty on vertebral compression fractures with different bone mineral densities: a retrospective study

Table 1 Comparison of demographic characteristics of patients before surgery in each group

	Normal BMD group (n = 64)	Osteopenia group (n = 81)	Osteoporosis group (n = 87)	F/X ²	P
Age (years)	65.35 ± 7.43	66.31 ± 8.87	68.56 ± 8.62	1.08*	0.35
Sex (Male/Female)	16/48	18/63	18/69	0.11#	0.94
BMD (T-score)	0.22 ± 0.067	-1.68 ± 0.33	-3.07 ± 0.48	0.63*	0.031
Number of different operative locations (T12/L1/L2)	16/32/16	27/39/15	33/30/24	2.12#	0.71
Volume of bone cement	5.20 ± 1.16	4.78 ± 1.88	5.71 ± 1.53	0.07*	0.93
Surgery time (min)	15.92 ± 2.36	15.64 ± 2.50	15.39 ± 2.58	0.02*	0.12
Follow-up time (month)	9.15 ± 1.03	9.19 ± 1.62	9.47 ± 1.58	0.19*	0.82

Continuous variables were expressed as mean ± standard deviation, and compared by one-way ANOVA. Categorical variables were expressed as percentages, and Fisher’s test was used to compare the difference among three groups. * represents F value while # indicates X². BMD, bone mineral density; T12: the 12th thoracic vertebra; L1: the 1st lumbar vertebra; L2: the 2nd lumbar vertebra

ISSN: 1471-2474