Table 3.
Relationship of Meniscus Extrusion to Patellofemoral Joint Structural Damage
| Medial PFJ Damage | Lateral PFJ Damage | |||
|---|---|---|---|---|
| No Medial Meniscus Extrusion | Prevalent Medial Meniscus Extrusion | No Medial Meniscus Extrusion | Prevalent Medial Meniscus Extrusion | |
| 60-MO (cross-sectional analysis) | ||||
| Any Cartilage Damage | ||||
| WORMS ≥ 2 n/N | 656/1293 | 635/1012 | 825/2111 | 101/194 |
| (%) | 50.7 | 62.8 | 39.1 | 52.1 |
| *Adjusted OR | 1.0 | 1.2 | 1.0 | 1.3 |
| (95% CI) | REF | 1.1-1.3 | REF | 1.1-1.5 |
| Full-thickness Cartilage Damage | ||||
| WORMS ≥ 2.5, 5-6 n/N | 158/1293 | 181/1012 | 283/2111 | 37/194 |
| (%) | 12.2 | 17.9 | 13.4 | 19.1 |
| *Adjusted OR | 1.0 | 1.5 | 1.0 | 1.3 |
| (95% CI) | REF | 1.2-1.8 | REF | 0.9-1.9 |
| Any Bone Marrow Lesion | ||||
| WORMS ≥ 2 n/N | 382/1291 | 278/1011 | 513/2109 | 60/192 |
| (%) | 29.6 | 27.5 | 24.3 | 31.3 |
| *Adjusted OR | 1.0 | 0.9 | 1.0 | 1.2 |
| (95% CI) | REF | 0.8-1.1 | REF | 1.0-1.6 |
| 60-84-MO FOLLOW-UP (longitudinal analysis) | ||||
| Worsening Cartilage Damage | ||||
| Any increase in WORMS n/N | 92/1278 | 69/992 | 159/2023 | 24/178 |
| (%) | 7.2 | 7.0 | 7.9 | 13.5 |
| *Adjusted OR | 1.0 | 1.0 | 1.0 | 1.7 |
| (95% CI) | REF | 0.7-1.4 | REF | 1.2-2.5 |
| Worsening of Bone Marrow Lesion | ||||
| Any increase in WORMS n/N | 132/1278 | 93/1002 | 204/2090 | 22/190 |
| (%) | 10.3 | 9.3 | 9.8 | 11.6 |
| *Adjusted OR | 1.0 | 0.9 | 1.0 | 1.1 |
| (95% CI) | REF | 0.7-1.2 | REF | 0.7-1.7 |
*
Adjusted for age, sex, BMI and history of previous knee injury or surgery