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Sub-trochanteric nail

  • US 4,103,683 A
  • Filed: 06/03/1977
  • Issued: 08/01/1978
  • Est. Priority Date: 06/03/1977
  • Status: Expired due to Term
First Claim
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1. A sub-trochanteric fracture appliance for use in a surgical procedure for stabilizing the trochanter and distal portions of a fractured upper thighbone, the appliance including a crosspiece that may be assembled in combination with a universal right and left handed femoral nail, the nail being adapted for insertion in the medullary canal of the thighbone to extend from the trochanter into the distal portion of the bone and the crosspiece extending across the trochanter and into the neck and femoral head thereof, comprising a cylindrical femoral nail adapted to be inserted to extend for a substantial distance from the greater trochanter through the medullary canal into a distal portion of a fractured thighbone, said femoral nail having a narrow longitudinally extending slot near one end thereof defined by top and bottom walls and longitudinally aligned arcuate side walls, said slot being positioned lengthwise of said femoral nail to be situated opposite the femoral head of the thighbone when said nail is positioned in said trochanter and medullary canal with said slot traversing a portion of said trochanter, an elongated flat spirally designed crosspiece having a cross sectional shape that has an area of a size to just neatly fill the open area constituting said slot, said spiral of said crosspiece having a pitch in the order of one revolution in an 8-inch length, said crosspiece having a length equal to about 1/4 a full twist of the spiral and being adapted to be inserted in said slot to be driven therethrough to extend through the neck of the femur and have one end firmly seated in said slot and its other end positioned generally horizontally and lodged in the femoral head of the thighbone.

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