What Manufacturers Really Mean By Natural And Artificial Flavors Like many shoppers, I find food labels confusing. In most circumstances, the implications of âartificialâ and naturalâ are pretty clear.
Hydroxylapatite, also called hydroxyapatite (HA), is a naturally occurring mineral form of calcium apatite with the formula Ca 5 (PO 4) 3 (OH), but is usually written Ca 10 (PO 4) 6 (OH) 2 to denote that the crystal unit cell comprises two entities. Hydroxylapatite is the hydroxyl endmember of the complex apatite group.
Multipartite hallux sesamoids are a commonly seen normal variant, present in up to 33% of hallux sesamoids. They are more commonly bipartite than tripartite. The medial (tibial) sesamoid is more likely to be multipartite than the lateral (fibul... Multipartite hallux sesamoids are a commonly seen normal variant, present in up to 33% of hallux sesamoids. They are more commonly bipartite than tripartite. The medial (tibial) sesamoid is more likely to be multipartite than the lateral (fibular) sesamoid because it more commonly has more than one ossification centre. Bipartite hallux sesamoids are bilateral in ~70% (range 50-85%) of cases. Differential diagnosis The principal differential diagnosis is a hallux sesamoid fracture. 1  It can be difficult to differentiate because bipartite hallux sesamoids are more likely to fracture than complete hallux sesamoids. Features that support a bipartite over a fractured sesamoid include: 2  transverse lucency. 3  smooth, well-corticated margins.