Risk factors for secondary fractures to percutaneous vertebroplasty for osteoporotic vertebral compression fractures: a systematic review

Table 1 Characteristics of the included studies. Risk factors: 1. Age 2. BMI 3. The additional history of fracture 4. The height of vertebral anterior 5. BMD 6. Bone cement leakage 7. Intravertebral fracture clefts 8. Cobb Angle

Study	Country	Years	Study design	Total events	Secondary fracture events	Age (years)	Follow-up months	Risk factors	NOS score
Bi et al. [16]	China	2017	Retrospective observational studies	177	28	62.5 ± 13.5	15.5 ± 3.2	1, 3, 5	7
Song et al. [17]	China	2018	Retrospective observational studies	93	25	48.6 ± 1.3	12	1, 2, 3, 4	8
Zhou et al. [18]	China	2020	Retrospective observational studies	144	56	69.50 ± 1.30	24–36	1, 3, 4, 5, 6, 8	8
Ji et al. [19]	China	2019	Retrospective observational studies	618	64	76.8 ± 8.8	6–60	1, 3, 6	8
Lu et al. [20]	China	2012	Retrospective observational studies	155	43	73.3 ± 9.8	< 24	5	7
Mo et al. [21]	China	2020	Retrospective observational studies	168	56	–	1–3	2	6
Ren et al. [22]	China	2015	Retrospective observational studies	182	21	49–91	24–50	2	7
Yang et al. [23]	China	2019	Retrospective observational studies	170	10	45.66 ± 1.33	3–13	7, 8	8
Sun et al. [24]	China	2016	Retrospective observational studies	175	37	70.3 ± 8.2	12	4, 5, 6	9

ISSN: 1749-799X