Characteristics of identified studies
| First author | Year of publication | No of patients/knees | Yttrium dosage (mCi) | Comparator |
| Bridgman12 | 1971 | 22/42 | 3 | Placebo |
| Bridgman13 | 1973 | 23/44 | 3 | Placebo |
| Delbarre14 | 1974 | 97/146 | 6 | Placebo |
| Szanto15 | 1977 | 33/58 | 3–4 | Methylprednisolone acetate |
| Yates9 | 1979 | 28/33 | 5 | Placebo |
| Arthritis and Rheumatism Council Multicentre Radiosynoviorthesis Trial Group16 | 1984 | 28/40 | 5 | Triamcinolone hexacetonide |
| Grant18 | 1992 | 22/30 | 8 | Triamcinolone hexacetonide |