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Table 5 Changes in MRI scores, femorotibial angle, and pain between baseline and 24-month follow-up (n = 582)

From: Association of subchondral bone marrow lesion localization with weight-bearing pain in people with knee osteoarthritis: data from the Osteoarthritis Initiative

Characteristic (units or possible range) Mean change (range)
BMI (kg/m2) 0.02 (−10.5 to 13.1)
Total BML score, 0–45 0.7 (−7 to 12)
 BML score at medial FT joint, 0–15 0.5 (− 4 to 10)
 BML score at lateral FT joint, 0–15 0.1 (− 2 to 5)
 BML score at medial PF joint, 0–6 0.03 (− 5 to 3)
 BML score at lateral PF joint, 0–6 0.1 (− 3 to 3)
 BML score at subspinous region, 0–3 0.07 (− 3 to 3)
Articular cartilage score, 0–42 0.8 (−10 to 9)
Osteophyte score, 0–32 0.4 (− 12 to 14)
Hoffa’s synovitis score, 0–3 0.08 (− 2 to 2)
Effusion-synovitis score, 0–3 0.1 (− 2 to 2)
Medial meniscus extrusion score, 0–3 0.2 (− 2 to 3)
New anterior cruciate ligament tears (%) 0.7
FTA (degree) 0.4 (− 3.9 to 2.0)
Weight-bearing pain, 0–15 0.5 (−10 to 10)
Non-weight-bearing pain, 0–10 0.02 (− 11 to 13)
  1. Positive values represent increases from baseline to follow- up
  2. BMI body mass index, BML bone marrow lesion, FTA femorotibial angle, FT femorotibial, PF patellofemoral