Quadriceps muscle volume has no effect on patellofemoral cartilage lesions in patients with end-stage knee osteoarthritis

Table 2 Logistic regression analysis for factors affecting patellofemoral arthritis

	B	S.E	OR	95% CI	p-Value
Insall–Salvati ratio	0.413	0.911	1.512	0.254 ~ 9.013	0.650
HKA angle	−0.082	0.039	0.921	0.854~0.994	0.033
Q-angle	0.021	0.040	1.022	0.945~1.105	0.589
Q-muscle area: Femur bone area	−0.043	0.237	0.958	0.602~1.525	0.857
Medial Q-muscle thickness: femur width	−0.435	1.249	0.647	0.056~7.483	0.727
Anterior Q-muscle thickness: femur width	−1.265	1.308	0.282	0.022~3.661	0.333
Lateral Q-muscle thickness: femur width	0.569	0.929	1.767	0.286~10.907	0.540

−2LL = 263.210, NagelKerke R² = 0.056, Hosmer–Lemeshow test: χ² = 3.201 (p = 0.921), Q-muscle quadriceps muscle, HKA hip–knee–ankle

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