Prevalence of structural abnormalities as assessed on MRI on different locations in the knee stratified by symptomatic knee OA status
| No symptomatic OA (n=1107) | Symptomatic OA (n=177) | |
|---|---|---|
| Grade 0-1-2-3 (%) | Grade 0-1-2-3 (%) | |
| Baker's cyst | 71-19-7-2 | 60-17-11-12 |
| Effusion | 21-68-10-1 | 14-52-29-6 |
| Tibiofemoral compartment: | ||
| Osteophytes | ||
| Femoral condyle medial/lateral | 16-76-8-1/24-70-5-1 | 8-59-20-12/16-59-19-6 |
| Tibial plateau medial/lateral | 66-32-2-0/76-22-2-1 | 38-47-12-3/53-36-9-2 |
| Cartilage defects | ||
| Femoral condyle medial/lateral | 44-44-10-2/82-13-4-0 | 30-42-20-8/70-18-10-2 |
| Tibial plateau medial/lateral | 33-58-9-1/85-7-7-1 | 28-53-15-5/76-12-9-2 |
| Bone marrow lesions | ||
| Femoral condyle medial/lateral | 87-8-6-0/93-3-3-0 | 67-15-19-NP/88-6-6-NP |
| Tibial plateau medial/lateral | 91-5-4-0/94-3-3-0 | 75-5-19-2/88-4-7-2 |
| Cysts | ||
| Femoral condyle medial/lateral | 99-1-NP-0/99-1-0-NP | 98-2-NP-NP/98-2-1-NP |
| Tibial plateau medial/lateral | 98-1-1-0/98-1-1-0 | 96-3-1-1/97-1-1-1 |
| Patellofemoral compartment: | ||
| Osteophytes | ||
| Patellar crest | 99-0-0-0 | 96-2-2-0 |
| Patellar facet medial/lateral | 44-49-7-0/85-14-1-NP | 25-54-17-6/68-25-7-NP |
| Trochlear facet medial/lateral | 74-24-2-1/81-17-1-0 | 46-36-11-7/61-28-8-3 |
| Cartilage defects | ||
| Patellar crest | 37-30-21-12 | 22-32-25-22 |
| Patellar facet medial/lateral | 36-28-25-12/62-26-9-3 | 27-24-32-18/50-29-12-9 |
| Trochlear facet medial/lateral | 48-40-11-1/66-28-5-1 | 42-37-16-5/59-29-5-7 |
| Bone marrow lesions | ||
| Patellar crest | 80-8-12-NP | 71-10-20-NP |
| Patellar facet medial/lateral | 91-5-4-NP/95-3-2-0 | 93-6-1-NP/92-5-3-NP |
| Trochlear facet medial/lateral | 94-4-2-0/95-2-3-0 | 94-3-3-NP/88-5-7-NP |
| Cysts | ||
| Patellar crest | 97-3-1-NP | 97-3-NP-NP |
| Patellar facet medial/lateral | 99-1-0-NP/100-0-NP-NP | 100-NP-NP-NP/99-1-NP-NP |
| Trochlear facet medial/lateral | 99-1-0-NP/99-1-0-NP | 98-2-NP-NP/99-1-NP-NP |
| Menisci: | ||
| Subluxation medial/lateral | 87-12-1-0/87-12-1-NP | 75-19-6-1/83-16-1-NP |
| Maceration medial/lateral | 66-27-7-0/75-20-5-0 | 63-23-14-1/71-21-6-2 |
| Tear medial/lateral | 78-22-NA-NA/86-14-NA-NA | 71-29-NA-NA/79-22-NA-NA |
Numbers are rounded to percentages as whole numbers.
NP, not present, NA, not applicable; OA, osteoarthritis.