Table 1.
WORMS features and regional subdivision of the knee joint. Features marked with * were evaluated in the different regions. Cartilage, bone attrition and osteophytes were not evaluated in the S-region
| Features | Regional Subdivision | |
|---|---|---|
| articular cartilage integrity* | Patellofemoral joint (PFJ) | medial patella (MP) |
| subarticular bone marrow abnormality* | lateral patella (LP) | |
| subarticular cysts* | anterior medial femoral condyle (MFa) | |
| subarticular bone attrition* | anterior lateral femoral condyle (LFa) | |
| marginal osteophytes* | Medial tibiofemoral joint (MTFJ) | posterior femoral condyle (MFp) |
| medial meniscal integrity | central medial femoral condyle (MFc) | |
| lateral meniscal integrity | anterior medial tibial plateau (MTa | |
| anterior cruciate ligament integrity | central medial tibial plateau (MTc) | |
| posterior cruciate ligament integrity | posterior medial tibial plateau (MTp) | |
| medial collateral ligament integrity | Lateral tibiofemoral joint (LTFJ) | central lateral femoral condyle (LFc) |
| lateral collateral ligament integrity | posterior lateral femoral condyle (LFp) | |
| synovitis/effusion | anterior lateral tibial plateau (LTa) | |
| intraarticular loose bodies | central lateral tibial plateau (LTc) | |
| periarticular cysts/bursitis | posterior lateral tibial plateau (LTp) | |
| Subspinous region | portion of the tibial plateau beneath the tibial spines (S-region) | |