Table 1 Characteristics of included studies and MCMS
Country | Sample duration | Sample size | Dislocation cases | Gender (M/F) | Age (year) | BMI (kg/m2) | Disease | Follow-up time (year) | MCMS | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
OA | SONK | ||||||||||
1.Bae et al. [5]* | Korea | 2002–2016 | 1853 | 67 | 5/62 | 64 (48–80) | 27 (19–35) | 60 | 7 | NA | 67 |
2.Choy et al. [11] | Korea | 2002–2005 | 164 | 15 | 14/133 | 65.5 (44–75) | NA | 146 | 18 | 12.1 (10.1–14) | 72 |
3.Kang et al. [6] | Korea | 2003–2016 | 531 | 22 | 49/482 | 67.7 (56-78) | 25 (20–29) | 531 | 0 | 9.6 (6.6–12.5) | 75 |
4.Kim et al. [13] | Korea | 2002–2015 | 1410 | 42 | 151/1425 | 62 (43–86) | NA | 1410 | 0 | 7.17 (0.5–14.42) | 78 |
5.Tian et al. [7] | China | 2006–2010 | 440 | 4 | 177/263 | 58.3 (44-81) | 24 (23–32) | 427 | 13 | 6.1 (5–9.3) | 80 |
6.Xue et al. [8] | China | 2005–2017 | 708 | 3 | 295/339 | 67.8 | 31 | 667 | 41 | 6.2 (2.7–12) | 80 |
7.Yoshida et al. [9] | Japan | 2002–2011 | 1251 | 10 | 180/810 | 77.2 (47–94) | NA | 1186 | 65 | 5.2 (1–10.5) | 76 |