Inter- and intrareader agreement for synovitis scoring at individual sites
| Location | Intrareader 1 w-κ (95% CI) | Intrareader 2 w-κ (95% CI) | Inter-reader w-κ (95% CI) |
|---|---|---|---|
| Medial parapatellar recess | 1.00 (1.00 to 1.00) | 0.70 (0.48 to 0.92) | 0.80 (0.62 to 0.98) |
| Lateral parapatellar recess | 0.80 (0.60 to 0.99) | 0.93 (0.81 to 1.00) | 0.81 (0.63 to 0.99) |
| Suprapatellar | 0.92 (0.81 to 1.00) | 0.63 (0.41 to 0.86) | 0.83 (0.69 to 0.97) |
| Infrapatellar | 0.83 (0.69 to 0.97) | 0.81 (0.60 to 1.00) | 0.78 (0.62 to 0.93) |
| Intercondylar | 0.80 (0.64 to 0.96) | 1.00 (1.00 to 1.00) | 0.67 (0.50 to 0.85) |
| Adjacent to PCL | 0.83 (0.69 to 0.97) | 0.60 (0.34 to 0.86) | 0.70 (0.55 to 0.86) |
| Adjacent to ACL | 0.76 (0.53 to 0.96) | 0.95 (0.86 to 1.00) | 0.69 (0.51 to 0.88) |
| Medial perimeniscal | 0.94 (0.84 to1.00) | 0.74 (0.57 to 0.91) | 0.91 (0.79 to 1.00) |
| Lateral perimeniscal | 0.78 (0.61 to 0.94) | 0.75 (0.53 to 0.96) | 0.67 (0.49 to 0.85) |
| Adjacent to loose bodies | 0.67 (0.10 to 1.00) | 0.00 (0.00 to 0.00)* | 0.73 (0.31 to 1.00) |
| Within Baker's cyst | 0.85 (0.56 to 1.00) | 0.74 (0.26 to 1.00) | 0.92 (0.77 to 1.00) |
↵* Only a few knees scored by reader 2.
ACL, anterior cruciate ligament; PCL, posterior cruciate ligament; w-κ, weighted κ.