The analgesic efficacy of extracorporeal shock wave combined with percutaneous vertebroplasty in the treatment of osteoporotic thoracolumbar compression fractures in postmenopausal women

Table 2 Comparison of postoperative complications

Item	Group			χ²	P
Item	U-PKP group (n = 21)	B-PKP group (n = 20)	EP-PVP group (n = 18)	χ²	P
Cement leakage rate [n (%)]	2 (9.52)	2 (5)	4 (22.22)	1.66	0.44
Diffusion of bone cement [n (%)]	21 (100)	20 (100)	18 (100)	25.01	< 0.01
Mass type [n (%)]	2 (9.52)	2 (10)	0 (0)^*
Mixed type [n (%)]	17 (80.96)	15 (75)	7 (38.89)^*
Diffuse type [n (%)]	2 (9.52)	3 (15)	11 (61.11)^*
Refracture rate [n (%)]	1 (4.76)	1 (5)	1 ( 5.56)	0.01	0.99

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