Femoral Fracture Fixation System

An implant system for fixation of bone, comprising:

• a bone fastener having a groove formed on an outer surface thereof;
• an intramedullary nail having a proximal portion and a distal portion, the proximal portion defining a central bore extending along a central axis of the proximal portion, the intramedullary nail defining a transverse bore extending transverse to the central axis of the proximal portion and intersecting the central bore, the transverse bore being configured to receive the bone fastener therein;
• and
• a coupling insert configured to be received within the central bore and having first and second portions spaced along a longitudinal axis of the coupling insert, the coupling insert defining a through-opening extending along the longitudinal axis through the first and second portions, the second portion comprising a plurality of moveable members extending from the first portion and terminating at respective terminal ends, the moveable members being moveable relative to each other such that the terminal ends of the moveable members are separated from one another in a first configuration and relatively closer together in a second configuration, such that in the second configuration, the terminal ends of the moveable members at least partially occlude the through-opening and are at least partially receivable within the groove of the bone fastener when the bone fastener is disposed within the transverse bore.