Bone fracture fixation device with transverse set screw and aiming guide

A bone fixation device for treatment of a femoral neck fracture, located between the femur and femur head regions, the device comprising:

• a fixation screw defining a transverse opening;
• a fixation arm configured for inserting the fixation screw through the femur at a first angle, the fixation arm having an elongate body including a first end and a second end, and the fixation screw releasably affixed at the second end of the body;
• a set screw;
• and
• an aiming arm configured for inserting the set screw through the femur at a second angle, into the transverse opening and engagement with the fixation screw, the aiming arm being affixed to the first end of the fixation arm and extending over the fixation arm to position the set screw in alignment with the transverse opening;
• wherein the set screw stabilizes the fixation screw in a non-threaded engagement that allows for non-threaded movement therebetween and the set screw is configured with threading to engage the femur;
• wherein the fixation screw comprises a tang having a transverse slot and a threaded bore;
• wherein the fixation screw is rotationally affixed to the fixation arm, such that rotation of the fixation arm rotates the fixation screw;
• wherein the fixation arm comprises a shroud having a substantially tubular body, the shroud having an axially projecting fin extending from a distal end of the shroud, and a rotatable shaft housed within and rotatable relative to the shroud, the shaft having a threaded distal end;
• and
• wherein the fin is configured to engage the transverse slot of the tang to rotationally couple the fixation screw to the shroud, and the threaded distal end of the shaft is configured to threadedly engage the threaded bore of the tang to releasably retain the fixation screw on the fixation arm.