Table 2 Characteristics of included studies
Study | Number of patients (Female/male) | Age in years | vertebral level treated | Mean follow-up time (month) | |||
|---|---|---|---|---|---|---|---|
Unilateral PS | Bilateral PS | Unilateral PS | Bilateral PS | Unilateral PS | Bilateral PS | ||
Choi [15] | 26(14/12) | 27(18/9) | 53.39 ± 14.31 | 56.22 ± 12.62 | L3-S1,one-level | 27.52 ± 3.30 | 28.85 ± 4.37 |
Xiaolong [16] | 31(14/17) | 34(18/16) | 57.3 ± 11.7 | 58.9 ± 10.1 | L4-S1,one-level | 26.6 (18-36) | |
Dahdaleh [17] | 16(4/12) | 20(6/14) | 62.2 ± 13.1 | 57.3 ± 11.2 | L3-S1,one-level | 11.4 ± 6.1 | 12.4 ± 7.2 |