Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 1 Main characteristics of the included studies
Author (year) | Country | Study design | No. of patients | Age (years) | ISS | NOS | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Total | PP | Non-PP | PP | Non-PP | PP | Non-PP | |||||
Osborn (2009) | USA | Retrospective | 40 | 20 | 20 | 37.9 ± 18.9 | 39.5 ± 17.4 | 54.7 ± 12.7 | 45.9 ± 8.7 | 8 | |
Tai (2011) | China | Retrospective | 24 | 11 | 13 | 51.2 ± 19.0 | 44.8 ± 24.7 | 40.0 ± 12.5 | 42.3 ± 18.8 | 9 | |
Cheng (2015) | South Korea | Retrospective | 125 | 49 | 76 | 45.37 ± 21.02 | 46.84 ± 21.43 | 40.10 ± 14.19 | 45.00 ± 15.71 | 9 | |
Chiara (2016) | Italy | Retrospective | 50 | 25 | 25 | PSM | PSM | 9 | |||
Hsu (2016) | Australia | Prospective | 24 | 14 | 10 | 49.9 ± 17.5 | 60.3 ± 23.5 | 32.0 ± 6.7 | 23.8 ± 12.7 | 9 | |
Jang (2016) | South Korea | Retrospective | 30 | 14 | 16 | 59.7 ± 15.0 | 60.9 ± 22.1 | 38.8 ± 8.3 | 32.2 ± 4.9 | 9 | |
Li (2016) | China | Prospective | 56 | 27 | 29 | 43 ± 13 | 40 ± 9 | 48 ± 6 | 43 ± 7 | 8 | |
Lee (2017) | South Korea | Retrospective | 79 | 43 | 36 | 53.2 ± 19.8 | 50.6 ± 19 | 38.7 ± 12.5 | 37.2 ± 12.3 | 9 | |
Shim (2018) | South Korea | Retrospective | 58 | 30 | 28 | 62.5 ± 14.4 | 57.0 ± 22.8 | 38.4 ± 8.5 | 38.7 ± 9.2 | 9 | |
Frassini (2020) | Italy | Retrospective | 74 | 37 | 37 | PSM | PSM | 9 | |||