Table 1. Characteristics of included studies.
| Authors | Year | Study design | PVA type | Group | Cases (n) | Female (n) | Mean age (year) | Preoperative VAS | Preoperative ODI | Follow-up (months) |
| Curved | 30 | 18 | 71.8+11.2 | 8.0+1.1 | - | 3 | ||||
| Cheng and Liu[11] | 2019 | RCT | PVP | Straight | 22 | 12 | 69.8±12.1 | 8.3±0.7 | - | 3 |
| Curved | 25 | 17 | 70.7+6.8 | 7.9+0.6 | 40.1+3.5 | 3 | ||||
| Geng et al.[12] | 2021 | RCT | PVP | Straight | 31 | 21 | 70.4±6.6 | 7.9±0.5 | 40.1±4.7 | 3 |
| Curved | 36 | 26 | 75.6+6.1 | 7.6+1.3 | 70.8+10.0 | 6 | ||||
| Wang et all10! | 2021 | RCT | PKP | Straight | 36 | 24 | 76.5±6.2 | 7.4±1.0 | 72.6±9.4 | 6 |
| Curved | 29 | 26 | 70.7+7.5 | 8.3+1.0 | 75.0+11.1 | 12 | ||||
| Zhong et al.[8] | 2019 | RCS | PVP | Straight | 75 | 63 | 73.8±8.2 | 8.2±0.8 | 73.4±11.7 | 12 |
| PVA: Percutaneous vertebral augmentation; RCT: Randomized-controlled trial; RCS: Retrospective, controlled study; PVP: Percutaneous vertebroplasty; PKP: Percutaneous kyphoplasty; VAS: Visual Analog Scale; ODI: Oswestry Disability Index. | ||||||||||