Tympanomastoid surgery is needed for the chronic draining ear or in the case of a cholesteatoma. This surgery involves the middle ear space as well as the mastoid and usually the incision may be through the tympanic membrane (eardrum) or behind the ear. 1 = Mastoid Bone 2 = Middle Ear 3 = Tympanic membrane (eardrum).his surgery involves the middle ear space as well as the mastoid and usually the incision may be through the tympanic membrane (eardrum) or behind the ear. 1 = Mastoid Bone 2 = Middle Ear 3 = Tympanic membrane (eardrum).
After WW1, they built the Maginot Line, along their border with Germany. This was a massive defensive fortifiations with underground bunkers that could be used for troops and support and command and control. In 1940, the Germans defeated this defensive line by attacking through Belgium and going around it.
Nazi Germany has always sparked a interest in me and 1 of 2 key reasons why I started to research in depth into military history. Germany conquered poland in September 15th 1939 after a 2 week campaign which was launched in September 1st 1939.This involved German troops sieging Western Poland. since the USSR were taken Eastern Poland.inland was de facto allied with Germany after Hitler declared war on the Soviet Union. Germany also utilized Italian and French territories in North Africa during 1940 and 1941. The European countries not conquered and not allied with Germany include Britain, Sweden, Spain, Portugal, Switzerland, and Ireland.