The most common organism in spinal infection is from the bacteria Staphylococcus aureus which typically exists on human skin, followed by Escherichia coli. Most spine infections occur in the lumbar spine because of the blood supply to this region of the spine.
Feudalism, a system of political and military relationships, evolved in western Europe. The feudal system was a simple but effective means of medieval government in which the king rented land to barons, who provided him knights and taxes
serf. under feudalism feudalism, form of political and social organization typical of Western Europe from the dissolution of Charlemagne's empire to the rise of the absolute monarchies. The term feudalism is derived from the Latin feodum,.....