Table II.
Frequency of ligamentous pathology features scored on MRI images of 49 knees from OAI and 14 non-arthritic cadaveric specimens
| Ligamentous pathology feature | OAI cohort (n = 49) | Cadaveric cohort (n = 14) |
|---|---|---|
| Presence of BMLs at PCL attachment | 33 (67%) | – |
| Presence of BMLs immediately anterior to PCL attachment | 34 (69%) | – |
| Presence of BMLs not at or immediately anterior to PCL attachment | 43 (88%) | – |
| Presence of BMLs at any site | 46 (94%) | – |
| Full thickness PCL tear | 0 (0%) | 0 (0%) |
| Intraosseous cyst | 25 (51%) | 5 (37%) |
| Osteophytes posterior to PCL attachment | 23 (47%) | 1 (7%) |
| Osteophytes lateral to PCL attachment | 46 (94%) | 8 (57%) |
| Cortical disruption at PCL attachment | 11 (22%) | 1 (7%) |
| Posterior recess effusion | 24 (49%) | – |
| Soft tissue mass in posterior knee recess | – | 0 (0%) |
| High signal streaking in posterior knee recess | – | 9 (64%) |
| Mean cartilage WORMS score (standard deviation) | 16.0 (15.8) |