Lateral pillar is the key in supporting pre-collapse osteonecrosis of the femoral head: a finite element model analysis of propensity-score matched cohorts

Table 2 Initial characteristics of osteonecrosis and FEM analysis results of stress distribution (*p < 0.05)

Initial characteristics of osteonecrosis	End results after follow-up		p value
Initial characteristics of osteonecrosis	Non-collapsed	Collapsed	p value
Location (central or medial: lateral)	8: 8	0: 16	0.015*
Size of necrosis (%)	46.9 ± 20.3 (16.7–85.8)	64.1 ± 33.6 (64.1–92.2)	0.015*
Stress concentration (yes: no)	3: 13	14: 2	0.001*

ISSN: 1749-799X