Knee osteoarthritis patients with more subchondral cysts have altered tibial subchondral bone mineral density

Table 5 Correlation coefficients between cyst parameters and patient and clinical OA characteristics at the lateral region. Spearman’s correlation coefficient was used for all variables. For alignment, negative relationships represent associations with varus alignment while positive relationships represent associations with valgus alignment. Significant associations are marked

	Lateral Cyst.N	Lateral Cyst.N/TV	Lateral Cyst.V/TV	Lateral Tot.Cyst.V	Lateral Max.Cyst.V	Lateral Avg.Cyst.V
Age	0.24	0.24	0.24	0.24	0.24	0.22
Sex	0.62**	0.62**	0.62**	0.62**	0.62**	0.64**
BMI	− 0.35*	− 0.35*	− 0.35*	− 0.36*	− 0.36*	− 0.34*
Alignment	0.60**	0.60**	0.61**	0.61**	0.62**	0.62**
Lateral JSN	0.66**	0.66**	0.68**	0.67**	0.68**	0.68**
Lateral KL	0.54**	0.54**	0.54**	0.54**	0.53**	0.51**
Total WOMAC Pain	0.15	0.16	0.14	0.13	0.11	0.14
Nocturnal Pain	0.24	0.25	0.23	0.23	0.22	0.20
Lateral BMD	0.48**	0.47**	0.46**	0.46**	0.45**	0.43**

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