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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 slitting mill was a watermill for slitting bars of iron into rods. The rods then were passed to nailers who made the rods into nails, by giving them a point and head. The slitting mill was probably invented near Liège in what is now Belgium. The first slitting mill in England was built at Dartford, Kent in 1590.
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 ...
Luque rod: for fixation of the spine [26] Moore's pin for fracture of the neck of the femur; Neer's prosthesis for shoulder replacement [27] Rush nail for diaphyseal fractures of a long bone [28] Smith-Petersen nail for fracture of the neck of femur; Smith-Petersen nail with McLaughlin's plate for intertrochanteric fracture
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He was working extra hours in the blacksmith shop to make chain traces, for which Jefferson paid him three pence a pair. According to Jefferson's records, Granger was a most productive nailer. In the first three months of that year, he made 507 pounds of nails in 47 days, wasting the least amount of nail rod in the process.