Final answer:
Splinting an isolated femur fracture is usually done through a surgical procedure known as ORIF, using metal hardware to stabilize the bones. An indication of such a fracture includes severe pain and inability to bear weight on the affected leg.
Step-by-step explanation:
The best way to splint an isolated femur fracture typically involves stabilizing the bone through a procedure called an open reduction and internal fixation (ORIF) when done surgically. In this surgical procedure, the fractured femoral bones are first exposed, and then stabilization is achieved by using metal rods, screws, or plates to hold the bone together as it heals. An indication of a femur fracture can include severe pain, an inability to walk or bear weight on the leg, swelling and bruising, abnormal angulation, or visible protrusion of the bone through the skin in open fractures. In cases like a fractured diaphysis of the femur, severe complications such as fat embolism can occur, potentially leading to life-threatening respiratory distress.