Management of Femoral Shaft Fractures in Polytrauma Patients

Initial Management

• Careful monitoring of brain injuries with potential early re-scanning with perfusion CT is helpful in patients with closed head injury and femoral shaft fracture 1
• Active warming strategies should be employed to prevent hypothermia in polytrauma patients with femoral shaft fracture 2
• The American College of Surgeons recommends temporary external fixation or skeletal traction to stabilize the femur fracture, concurrent management of head injury, and monitoring of intracranial pressure, as well as conservative management of grade III splenic injury if the patient is hemodynamically stable, during the initial stabilization phase (Day 0-1) 3

Stabilization and Definitive Osteosynthesis

• Initial temporary stabilization with external fixator or skeletal traction is necessary to minimize the systemic inflammatory response in polytrauma patients, according to the 2021 guidelines for severe limb trauma 4
• Definitive osteosynthesis should be performed as early as possible once the patient's clinical status is stabilized, typically waiting approximately one week after the initial injury, with a goal of minimizing secondary insults to an already compromised patient 4, 2
• The optimal timing for conversion to definitive intramedullary nailing is approximately 1 week after injury, when intracranial pressure has normalized, respiratory function has improved, the patient is hemodynamically stable, and inflammatory markers have decreased 4, 2
• The Eastern Association for the Surgery of Trauma suggests converting to intramedullary nailing around Day 7, when pulmonary function has improved, neurological status is stable, splenic injury shows no signs of ongoing bleeding, and inflammatory markers have decreased, to minimize the risk of systemic inflammatory response syndrome, fat embolism syndrome, and acute respiratory distress syndrome 3

Thromboprophylaxis and Anesthesia Considerations

• Thromboprophylaxis timing should be considered in relation to potential future neuraxial anesthesia in polytrauma patients with femoral shaft fracture 2
• The American Society of Anesthesiologists recommends ensuring adequate perioperative fluid management to reduce morbidity, implementing active warming strategies to prevent hypothermia, considering thromboprophylaxis timing in relation to neuraxial anesthesia, and monitoring for bone cement implantation syndrome if cemented components are used 2

Complications and Treatment Options

• Pulmonary contusion significantly increases the risk of respiratory complications if early intramedullary nailing is performed, and delaying definitive fixation for approximately one week can reduce this risk 3
• External fixation is associated with higher complication rates compared to intramedullary nailing when used as definitive treatment, and should be considered only as a temporary measure before conversion to definitive intramedullary nailing 5
• The following complication rates are associated with different treatment options:

2

• Immediate intramedullary nailing within 24 hours is associated with 6.69 times greater odds of developing acute lung injury compared to initial external fixation with later conversion, in borderline patients with multiple injuries 2
• The American College of Surgeons recommends delayed definitive osteosynthesis in patients with severe visceral injuries, circulatory shock, or respiratory failure, with a GRADE 2+ strength of evidence 4