What is a common symptom of a fractured femur?

A common symptom of a fractured femur is indeed severe pain in the thigh accompanied by potential deformity. The femur, being the longest and strongest bone in the human body, supports significant weight and is involved in major movements such as walking and running. When a fracture occurs, the integrity of the thigh region is compromised, leading to intense pain that may be localized to the site of injury.

The characteristic deformity that may accompany a fractured femur typically presents as abnormal positioning of the leg or thigh, sometimes with visible angulation or shortening of the limb. This deformity arises from muscle contractions and the displacement of fractured bone fragments.

The other choices—mild swelling around the knee, instability in the ankle, and bruising on the calf—are not typical primary symptoms associated with a femur fracture. While swelling may occur in the knee area due to the proximity of the injury, it is not a direct symptom. Instability in the ankle is more indicative of ankle injuries and is not a common direct consequence of a femur fracture. Bruising on the calf could happen to some extent due to the impact or from associated injuries, but it is not a primary indication of a fractured femur. The clear manifestation of severe thigh pain