TABLE 1.
Baseline characteristics of the included studies.
| Author and year | Study design | K-L1(n) | K-L2(n) | K-L3 (n) | K-L4(n) | Hips | Follow-up (months) | Molecular weight (HA)kDa | Group | Sample size | Age (years) | Female |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dallari et al. (2016) | RCT | 22 | 18 | 24 | 16 | 80 | 12 | 1,500–3,200 | PRP + HA | 31 | MD | 19 |
| PRP | 44 | 24 | ||||||||||
| Nouri et al. (2022) | RCT | 0 | 33 | 30 | 0 | 63 | 6 | 2,500–3,200 | PRP + HA | 31 | 60.29 | 23 |
| PRP | 32 | 58.22 | 22 | |||||||||
| Palco et al. (2021) | Cohort | 0 | 24 | 28 | 0 | 52 | 12 | MD | PRP + HA | 26 | 64.81 | 14 |
| PRP | 26 | 50.62 | 10 |
Abbreviations: RCT, Randomized Clinical Trial; K-L, Kellgren-Lawrence scale; PRP, Platelet Rich Plasma; HA, Hyaluronic Acid; MD, Missing Data.