Table 5.
Prevalence of fabellae among different reports.
| Author | Year | Ethnic group | Method | Ages | Fabella/knee | Incidence |
|---|---|---|---|---|---|---|
| Silva4 | 2010 | Caucasian (Brazil) | Cadaver | 38–78 y | 2/64 | 3.1 |
| Kaplan21 | 1961 | Caucasian (America) | Cadaver | NA | 10/135 | 8.7 |
| Raheem22 | 2007 | Caucasian (Ireland) | Cadaver | 84 ± 8.1 ya | 2/22 | 9.1 |
| Phukubye29 | 2011 | Caucasian and African | Cadaver | 40–95 y | 18/102 | 17.6 |
| Yu23 | 1996 | Caucasian (America) | MRI | 12–72 y | 19/100 | 19.0 |
| Terry24 | 1996 | Caucasian (Georgia) | Radiography | NA | 5/25 | 20 |
| Egerci31 | 2016 | Caucasian (Turkey) | Radiography | 18–90 y | 228/1000 | 22.8 |
| Pritchett7 | 1984 | Caucasian (America) | Radiography | 31–87 y* | 252/972 | 25.9 |
| Hauser2 | 2015 | European (Switzerland) | CT | 20–104 y | 105/400 | 26.3 |
| Ehara26 | 2014 | Asian (Japan) | MRI | 4–89 y | 200/653 | 30.6 |
| Sarin20 | 1999 | Caucasian (America) | Radiography | 19–84 y | 45/112 | 31.3 |
| Chew27 | 2014 | Asian (Singapore) | Radiography and MRI | 14–55 y | 25/80 | 31.3 |
| Piyawinijwong25 | 2012 | Asian (Thailand) | Cadaver | 30–97 y | 144/372 | 38.7 |
| Present study | 2017 | Asian (China) | Radiograph | 21 m†–86 y | 660/1359 | 48.6 |
| Tabira30 | 2013 | Asian (Japan) | Cadaver | 74.5 ± 12.3 ya | 70/102 | 68.6 |
| Minowa6 | 2004 | Asian (Japan) | Cadaver | 54–98 y | 182/212 | 85.8 |
| Zeng5 | 2012 | Asian (China) | Cadaver and Radiography | 64–83 y | 53/61 | 86.9 |
| Kawashima3 | 2007 | Asian (Japan) | Cadaver | 66–100 y | 69/75 | 92.0 |
y* Denotes years;
m† Denotes months;
aDenotes mean ± SD.