Proportion of knees with cartilage loss according to articular plates
| Frequency of cartilage loss N=514 | Hoffa synovitis absence (grades 0 and 1) N=467 | Hoffa- synovitis presence (maximum grade ≥2) N=47 | p Value* | Effusion synovitis absence (grades 0 and 1) N=461 | Effusion synovitis presence (grade ≥2) N=53 | p Value* | ||
|---|---|---|---|---|---|---|---|---|
| Retropatellar | 90 (17.5) | 78 (16.7) | 12 (25.5) | 0.131 | 79 (17.2) | 11 (20.8) | 0.516 | |
| Trochlea | 49 (9.5) | 44 (9.4) | 5 (10.6) | 0.787 | 40 (8.7) | 9 (17.0) | 0.051 | |
| Medial femur weight bearing | 77 (15.0) | 69 (14.8) | 8 (17.0) | 0.681 | 62 (13.5) | 15 (28.3) | 0.004* | |
| Lateral femur weight bearing | 34 (6.6) | 26 (5.6) | 8 (17.0) | 0.003* | 23 (5.0) | 11 (20.8) | <.0001* | |
| Medial tibia | 53 (10.3) | 47 (10.1) | 6 (12.8) | 0.562 | 46 (10.0) | 7 (13.2) | 0.464 | |
| Lateral tibia | 49 (9.5) | 40 (8.6) | 9 (19.2) | 0.019* | 40 (8.7) | 9 (17.0) | 0.051 | |
| Patellofemoral (four subregions) | 122 (23.7) | 108 (23.1) | 14 (29.8) | 0.306 | 106 (23.0) | 16 (30.2) | 0.244 | |
| Tibiofemoral (10 subregions) | 137 (26.7) | 119 (25.5) | 18 (38.3) | 0.058 | 109 (23.6) | 28 (52.8) | <.0001* | |
* Statistically significant at p<0.05.