Table 5

Body mass index (BMI)-associated horizontal fissuring in osteochondral interface

UnadjustedP valueAge and sex adjustedP value
Predominant
 Incidence of fissures (OR (95% CI))*1.144 (1.061 to 1.233) <0.001 1.147 (1.055 to 1.246) 0.001
  Length of fissures (µm) (R)†0.403 <0.001 0.417 <0.001
  Area of fissures (mm2) (R)‡0.400 <0.001 0.391 <0.001
Medial
 Incidence of fissures (OR (95% CI))*1.173 (1.081 to 1.273) <0.001 1.186 (1.081 to 1.302) <0.001
  Length of fissures (µm) (R)†0.463 <0.001 0.507 <0.001
  Area of fissures (mm2) (R)‡0.467 <0.001 0.518 <0.001
Lateral
 Incidence of fissures (OR (95% CI))*1.086 (1.017 to 1.159) 0.013 1.078 (1.004 to 1.157) 0.038
  Length of fissures (µm) (R)†0.264 0.013 0.240 0.027
  Area of fissures (mm2) (R)‡0.286 0.007 0.224 0.040
  • *Logistic regression between BMI (kg/m2, continuous variable) and incidence of fissures.

  • †Spearman’s rank correlation analysis between BMI (kg/m2) and the length of fissures (µm).

  • ‡Spearman’s rank correlation analysis between BMI (kg/m2) and the area of fissures (mm2).