1 These are synovial joints between the interior articular process of superior vertebrae and the superior articular process of inferior vertebrae. 2  These plane joints are known as zygapophyseal joints (facet joints) . 3  The flat surfaces of the articular facets are covered with hyaline cartilage.
Major depression was more common and severe in patients with vascular dementia than in patients with AD. In another study of 288 outpatients with dementia, a prevalence of 7.4% was found with HAM-D, 8% prevalence with the GDS and 6.3% with DSM-IV criteria (Brodaty and Luscombe, 1996).
There are four common types of dementia: Alzheimer's disease, vascular dementia, dementia with Lewy bodies (DLB) and frontotemporal dementia (FTD). How important genes are in these different dementias varies considerably. For example, the role of genes in FTD seems to be much greater than in vascular dementia.