Table 5.

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

	Unadjusted	P value	Age and sex adjusted	P 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).