Antegrade retrograde recon femoral intramedullary nail system
A femoral intramedullary device is capable of treating a variety of femoral bone fractures. The device includes an intramedullary nail capable of antegrade or retrograde insertion into the femur and having a shank long enough to extend into the shaft of the long bone and reach the corresponding distal area or proximal area and sockets located intermediate the ends of the shank for receiving anchoring pins or screws extended transversely or radially from the shaft of the long bone. The intramedullary nail is placed in the intramedullary canal of a portion of the bone and the screws are fixed in the radial sockets or receivers at the level of the femoral neck to provide mechanical support across the bone. Transverse screws are placed through the transverse sockets to provide additional support and secure the nail within the femur.
1 . A method of fixing a fractured femur, comprising:
mounting an intramedullary nail onto a guide by engaging a lug on the guide with a lug receiver at a second end of the intramedullary nail:
orienting the mounted intramedullary nail for retrograde insertion into an intramedullary canal of the fractured femur;
using a center of a intercondylar notch in a coronal plane of the fractured femur as a starting point and inserting a first end of the intramedullary nail into the intramedullary canal so as to extend across a fracture line of the fractured femur;
positioning a transverse guide sleeve between a stabilizer pin receiver in the guide and a transverse stabilizer socket in the intramedullary nail;
inserting a stabilizer pin into the stabilizer pin receiver in the guide, the transverse guide sleeve, and the transverse stabilizer socket of the intramedullary nail to stabilize the intramedullary nail in the intramedullary canal of the fractured femur and to properly align an oblique fastener locator in the guide with an oblique fastener receiver in the first end of the intramedullary nail; and
engaging at least one fastener at an oblique angle into a neck of the fractured femur.
2 . The method of claim 1 , including positioning an oblique guide sleeve between the oblique fastener locator in the guide and the oblique fastener receiver in the intramedullary nail before engaging the at least one fastener in the oblique fastener receiver in the first end of the intramedullary nail to stabilize the neck of the fractured femur.
3 . The method of claim 2 , including extending the at least one fastener into the neck of the fractured femur to thereby stabilize the neck.
4 . A femoral intramedullary system, comprising:
an intramedullary nail having a first end configured for retrograde insertion into a fractured femur, the intramedullary nail having an elongated body including at least one oblique fastener receiver at the first end, wherein that at least one fastener receiver is adapted to match a native angle of a femoral neck of the fractured femur when the fractured femur has been realigned for setting; and
at least one fastener received in the at least one oblique fastener receiver and the femoral neck of the fractured femur to stabilize a neck of the femur;
wherein the femoral intramedullary system further includes (a) a guide adapted for placement of the at least one fastener with respect to the intramedullary nail (b) at least one stabilizer pin receiver in the guide aligned with at least one transverse stabilizer socket in the elongated body, (c) a transverse guide sleeve extending at least partially between the at least one stabilizer pin receiver in the guide and the at least one transverse stabilizer socket in the intramedullary nail, and (d) at least one stabilizer pin received in the at least one stabilizer pin receiver, the transverse guide sleeve, and the at least one transverse stabilizer socket whereby the intramedullary nail is stabilized in an intramedullary canal of the femur and the at least one oblique fastener locator is properly aligned with the at least one oblique fastener receiver.
5 . The femoral intramedullary system of claim 4 , wherein the guide is a J-shaped outrigger including a lug at a terminal end thereof adapted to engage in a lug receiver in a second end of the intramedullary nail.
6 . The femoral intramedullary system of claim 5 , further including an oblique guide sleeve extending at least partially between the at least one oblique fastener locator in the guide and the at least one oblique fastener receiver in the intramedullary nail.
7 . The femoral intramedullary system of claim 4 , wherein the oblique fastener locator and the oblique fastener receiver are aligned to match a native angle of a femoral neck of the fractured femur at an anteversion angle of between 5 degrees and 25 degrees.
8 . The femoral intramedullary system of claim 4 , wherein the oblique fastener locator and the oblique fastener receiver are aligned to match a native angle of a femoral neck of the fractured femur at an anteversion angle of between 10 degrees and 20 degrees.
9 . The femoral intramedullary system of claim 4 , wherein the oblique fastener locator and the oblique fastener receiver are aligned to match a native angle of a femoral neck of the fractured femur at an anteversion angle of 15 degrees.
10 . The femoral intramedullary system of claim 4 , wherein the oblique fastener receiver is adapted to extend on a line forming an acute included angle of between 5 degrees and 25 degrees with a coronal plane the fractured femur.