“…It is known that age-related brain symptoms (encephalopathy, gait difficulty [Parkinsonism with/without sarcopenia] [1], and dementia/delirium [2]) increase the likelihood of fall-related surgery. In contrast, it is not known which types of brain disease underlie such symptoms most, although fall-related surgery is conducted in up to 51% of patients white matter disease (WMD, also called small-vessel disease, accounting for gait difficulty) [3][4][5], up to 55% of patients with Alzheimer's disease (AD, for dementia) [6,7], up to 60% of patients with dementia with Lewy bodies (DLB, for gait difficulty and dementia) [8,9], and up to 25.7% of patients with alcoholism (for gait difficulty and dementia) [10,11].…”