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Table 1 Descriptive characteristics of knees used to examine the association between Bone Marrow Lesion (BML) size and cartilage morphology (n = 38)

From: Quantification of bone marrow lesion volume and volume change using semi-automated segmentation: data from the osteoarthritis initiative

Descriptive Characteristic Median (Min, Max)* or n (%)
Females 25 (66%)
OAI Progression Subcohort 36 (95%)
Radiographic Knee Osteoarthritis (Kellgren-Lawrence Grade ≥ 2) 38 (100%)
Age (years, mean ± standard deviation) 61 ± 8
Body Mass Index (kg/m2; mean ± standard deviation) 29.9 ± 5.3
Tibia BML Volume (baseline; mm3) 643.88 (17.97, 8120.29)
Femur BML Volume (baseline; mm3) 971.55 (21.79, 4205.43)
Tibia BML Volume Change (mm3) 86.22 (−5824.68, 3050.37)
Femur BML Volume Change (mm3) 164.41 (2268.4, 4634.04)
Tibia Cartilage Thickness Change (mm) −0.10 (−0.54, 0.19)
Central Femur Cartilage Change (mm) −0.18 (−0.96, 0.26)
Tibia Denuded Area Change (%) 3.9 (−9.4, 36.2)
Central Femur Denuded Area Change (%) 5.3 (−9.4, 36.2)
  1. * Median (Min, Max) reported instead of mean + standard deviation unless noted otherwise.