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

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

Initial characteristics of osteonecrosis End results after follow-up p value
Non-collapsed Collapsed
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*