Final answer:
Midshaft femur fractures are stabilized surgically with an intramedullary rod and screws, and healing times can vary depending on patient factors.
Step-by-step explanation:
The stabilization of a midshaft femur fracture during surgical repair is typically achieved through the insertion of an intramedullary rod into the femur, which is secured with screws. This method is used to align and stabilize the two portions of the broken femur, allowing the bone to heal properly. The period necessary for the stabilization of such a fracture to avoid complications varies and is often dependent on factors like the patient's age, overall health, and the nature of the fracture. Typically, healing time for a midshaft femur fracture can range from several weeks to a few months under proper medical guidance.