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Characteristics of Included Studies (N = 135)
| Study Characteristic | n (%) |
|---|---|
| Body part involved | |
| Knee | 54 (40) |
| Shoulder | 33 (24) |
| Hip | 26 (19) |
| Foot/ankle | 11 (8) |
| Elbow | 4 (3) |
| Thigh/leg | 3 (2) |
| Head | 2 (1) |
| Multiple | 2 (1) |
| Study design | |
| Randomized controlled trial | 7 (5) |
| Cohort | 43 (32) |
| Case-control | 12 (9) |
| Cross-sectional | 13 (10) |
| Case series | 60 (44) |
| Level of evidence | |
| 1 | 6 (4) |
| 2 | 13 (10) |
| 3 | 56 (41) |
| 4 | 60 (44) |
| Statistician coauthor | |
| Yes | 35 (26) |
| No | 100 (74) |
