Insufficient lateral stem contact is an influencing factor for significant subsidence in cementless short stem total hip arthroplasty

Table 4 Results of univariate regression analysis of 12 cases with significant subsidence

Variables	Univariate analysis
	OR	95%CI	P value
Age (≥ 60 yr)	0.96	0.2-4.6	0.96
DDH	0.65	0.1-5.2	0.69
ONFH	3.3	0.4-25.8	0.26
BMI (≥ 30 kg/m2)	0.95	0.1-7.6	0.96
Dorr’s type B	2.29	0.6-7.9	0.19
Seating height (< 5 mm)	0.91	0.3-2.9	0.87
NFR (< 0.8)	1.98	0.2-15.7	0.52
Insufficient lateral stem contact (≥ 1 mm)	5.02	1.3-18.9	0.0171

¹Significant value.

DDH: Developmental dysplasia of the hip; ONFH: Osteonecrosis of the femoral head; BMI: Body mass index; OA: Osteoarthritis; NFR: Neck filling ratio; OR: Odds ratio.