This preprint proposes a conceptual biomedical hypothesis of multiroute functional convergence for interpreting rare and complex disease trajectories. It argues that structurally recognizable lesions may represent late, information-poor endpoints that identify where biological failure became visible while remaining insufficient to reveal the upstream causal route. Bone infarction and osteonecrosis are used as illustrative ischemic models to examine how distinct molecular, metabolic, vascular, inflammatory, and hemorheological routes may converge within a vulnerable physiological territory before producing comparable structural outcomes. The manuscript introduces functional dissonance as a pre-structural phase and emphasizes causal route reconstruction as a route-based approach to mechanistic interpretation.
Publication Date: 2026-06-19