What is a fractured femur? A fractured femur is a breakage in the thigh bone (femur), the longest, strongest and heaviest bone in the human body. The strength and size of the femur means that under typical circumstances, a large force or extensive trauma is needed in order to result in a fracture. Motor vehicle accidents and falls are examples of common accidents that result in a fractured femur. Conversely, femur fractures that occur after low-energy trauma suggest the presence of some type of underlying bone condition. A fractured femur in a child may be a sign of child abuse. Symptoms of a fractured femur can include severe pain, bleeding, deformity of the leg, tissue swelling, and being unable to move your leg. Blood loss can be severe and may lead to hypovolemic shock. In some cases, bone fragments may protrude from the skin. Fractures of the femur are commonly associated with traumatic circumstances that may result in injuries to other areas of the body as well. Treatment of a broken femur involves restoration of the normal anatomical position of the bone fragments, referred to as reduction of the fracture. The exact methods used for treatment depend upon the individual situation and must take into account the extent and nature of the break as well as the treatment of any other injuries. Both surgical and nonsurgical treatment options may be considered. A fractured femur is an emergency situation. Seek immediate medical care (call 911) for serious symptoms, such as trauma followed by the inability to move your leg, severe pain, swelling, bleeding, or deformity.