Table 1 |
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Magnetic resonance imaging assessment, according to Boston-Leeds Osteoarthritis Knee Score [42] |
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Cartilage integrity |
Osteophytes |
Bone marrow lesions |
Effusion |
Synovitis |
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|
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Assessment |
Size of any cartilage thickness loss (both partial and full thickness loss) as percentage of cartilage surface area of each region |
Size of protuberance of osteophyte |
Size of BML (including volume of any associated cysts) as percentage of bone volume of each region |
Size of effusion within synovial space |
Presence of synovitis |
|
|
Region |
Number |
8 |
12 |
9 |
1 (one score for whole knee) |
5 |
|
MTF |
Medial weight-bearing femur |
Medial weight-bearing femur |
Medial weight-bearing femur |
- |
- |
|
|
Medial region tibia |
Medial posterior region femur |
Medial region tibia |
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Medial region tibia |
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|
LTF |
Lateral weight-bearing femur |
Lateral weight-bearing femur |
lateral weight-bearing Femur |
- |
- |
|
|
Lateral region tibia |
Lateral posterior region femur |
Lateral region tibia |
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|
Lateral region tibia |
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|
PF |
Medial region patella |
Superior region patella |
Medial region patella |
- |
- |
|
|
Lateral region patella |
Inferior region patella |
Lateral region patella |
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|
Medial trochlea femur |
Medial region patella |
Medial trochlea femur |
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|
Lateral trochlea femur |
Lateral region patella |
Lateral trochlea femur |
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|
Medial trochlea femur |
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|
Lateral trochlea femur |
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Other |
- |
- |
Subspinous region tibia |
- |
Hoffa's fat pad (infrapatellar) |
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|
Medial posterior-condylar region |
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Lateral posterior-condylar region |
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Medial recess |
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Lateral recess |
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Score (per region) |
0 = none |
0 = none |
0 = none |
0 = physiological amounta |
0 = absent |
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|
1 = <10% of surface area |
1 = mild |
1 = <10% of bone volume |
1 = smallb |
1 = present |
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2 = 10 to 75% of surface area |
2 = moderate |
2 = 10 to 25% of bone volume |
2 = mediumc |
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3 = >75% of surface area |
3 = severe |
3 = >25% of bone volume |
3 = larged |
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Details |
An osteophyte must be visible on two consecutive slices. Largest osteophyte within region scored |
If BML span more than one region, then full size of BML is attributed to region that is most involved |
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|
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BML, bone marrow lesions; LTF, lateral tibiofemoral compartment; MTF, medial tibiofemoral compartment; PF, patellafemoral compartment. aIn supra-patellar bursa only. bFluid continuous in retropatellar space. cWith slight convexity of suprapatellar bursa. dEvidence of capsular distention. |
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Knoop et al. Arthritis Research & Therapy 2012 14:R212 doi:10.1186/ar4050 |
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