Final answer:
External fixation for definitive treatment of open tibia fx is associated with stability, prevention of bone separation, and proper healing.
Step-by-step explanation:
External fixation for definitive treatment of open tibia fx is associated with the prevention of separation between the distal ends of the tibia and fibula and maintenance of the talus locked into position between the medial malleolus and lateral malleolus. It provides stability to the fractured bone and allows for proper healing. External fixation involves the use of metal pins or wires that are placed through the skin and into the bone on both sides of the fracture, and an external frame is attached to these pins to hold the bone in place.