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An intramedullary rod, also known as an intramedullary nail (IM nail) or inter-locking nail or Küntscher nail (without proximal or distal fixation), is a metal rod forced into the medullary cavity of a bone. IM nails have long been used to treat fractures of long bones of the body.
The slitting mill, introduced to England in 1590, simplified the production of nail rods, but the real first efforts to mechanise the nail-making process itself occurred between 1790 and 1820, initially in England and the United States, when various machines were invented to automate and speed up the process of making nails from bars of wrought ...
The Kingdom of Spain lost Spanish Netherlands, Spanish viceroyalty of Naples and Sicily, Duchy of Milan, Menorca and Gibraltar. 1717: 27 May: Viceroyalty of New Granada began. 1761: Seven Years' War: Spain declared war on Great Britain. 1763: 10 February: Treaty of Paris. Spain recovers Florida and obtains Louisiana till 1801. 1778
First professional army in Europe – men were hired and trained in Spain to join the army as their professional job not as some levy or through hiring mercenaries. Rapier - Spain was the first European country to use rapiers. First use of a rotorcraft in combat, during the suppression of the Asturias Rebellion in 1934 [37]
Küntscher first performed the process using the nail in November 1939 at the University Department of Surgery in Kiel. He first presented 12 cases of intramedullary fixation with rods at a surgical meeting in Berlin 03/18/40 and was met with general disapproval for using surgery for fractures [ 1 ] The German military initially disapproved of ...
The characteristic of an Iron Age culture is the mass production of tools and weapons made not just of found iron, but from smelted steel alloys with an added carbon content. [citation needed] Only with the capability of the production of carbon steel does ferrous metallurgy result in tools or weapons that are harder and lighter than bronze.
Different railroads used different sized nails with either alpha or numerical markings. An example would be a Southern Pacific Railroad nail with the marking "01" stamped on the head of the nail. The "01" would identify the nail as being hammered into a railroad tie in the year 1901. [2] Date nails can vary in size, shape, length, material, and ...
Toledo steel, historically known for being unusually hard, is from Toledo, Spain, which has been a traditional sword-making, metal-working center since about the Roman period, and came to the attention of Rome when used by Hannibal in the Punic Wars. It soon became a standard source of weaponry for Roman legions. [1]