Abstract: An implant assembly for proximal femur fracture comprises of a targeting device and intramedullary nail having plurality of proximal holes directed towards head and neck of femur wherein the axis of the holes makes an ante version angle of about 5° to 20° with the horizontal plane and at the same time axis of plurality of distal holes making 90° angle to longitudinal axis of said nail that holds the femur wherein said nail has reducing cross section area from thigh end to knee end with grooved knee end with anterior curvature even in short length version, plurality of proximal sliding hip pins with smooth shaft for collapsibility, triflanged end with mores taper to hold proximal femur, large head and washer to get impaction and plurality of distal locking screw to hold distal fragment of femur, optional buttress plate and barrels supporting lateral cortex to get controlled limited guided collapse.

Abstract: An implant assembly of flexible nails (19) for fractures of long bones comprises of a straight universal length flexible nails having properties of ductility as 15% to 25% of elongation of nail and ultimate tensile strength of 600 to 800 Mega Pascal on testing, having an identical pathfinder blunt conical tip (20) at both ends, an optional proximal fixation device (27) with optional plural holes for interlocking screws (28) to be used in combination with said flexible nails having peripheral equally spaced plural grooves deep less than diameter of one said flexible nail, a end cap with plural holes to be used in combination with said proximal fixation device to anchor cut hooked ends of said flexible nails and a tool plier_knurler cum cutter temporarily applied when said flexible nails are alone in use.