A femoral shaft fracture is a fracture anywhere along the shaft or diaphysis of the femur. These fractures commonly occur in young males as a result of high-impact injuries (e.g., motor vehicle accidents). Low-impact shaft fractures tend to occur in older patients with pre-existing osteopenia, who have fallen from a standing position. Femoral fractures typically present as a painfully swollen, tense thigh with restricted range of motion and signs of fracture (e.g., shortening). Diagnosis is based on clinical examination findings and visualization of the fracture on plain radiographs. Definitive treatment following splinting and traction is usually surgical but depends on the patient's condition. Vascular compromise and fat embolism are common complications. For fractures of the femoral head, neck, and trochanter, see article on .
Femoral shaft fractures are divided by the Winquist-Hansen classification, based on the degree of comminution. This includes the following categories:
- Type 0: no comminution, simple transverse or oblique
- Small butterfly fragment
- Minimal to no comminution
- Type II: butterfly fragment with at least 50% of the circumference of the cortices of the two major fragments intact
- Type III: butterfly fragment with 50-100% of the circumference of the two major fragments comminuted
- Segmental comminution
- All cortical contact is lost
- Painfully swollen, tense thigh
- Restricted range of motion
- (e.g., shortening, deformity)
- Crepitus and distal neurovascular deficits could be present.
Open fractures are almost always associated with multiple injuries.