MediAI

  Pilon fracture A pilon fracture (also known as a tibial plafond fracture ) is a complex and often severe injury involving the distal end of the tibia, typically extending into the weight-bearing surface of the ankle joint. 1. Cause A pilon fracture is typically caused by high-energy axial loading , such as: Motor vehicle collisions Falls from significant heights (landing on feet) Industrial accidents Low-energy mechanisms (e.g., simple ankle twists) can also cause pilon fractures in osteoporotic or elderly patients, but are less common. 2. Etiology The etiology is directly related to axial compressive forces that drive the talus into the distal tibial articular surface, causing: Comminution of the tibial plafond Disruption of the metaphysis and joint congruity Soft tissue damage , including skin, ligaments, and muscles The mechanism of injury is crucial in determining the severity: Axial load + valgus/varus rotation...

  Pseudoaneurysm After Femoral Fracture A pseudoaneurysm (false aneurysm) following a femoral fracture is a rare but serious vascular complication. 1. Cause A pseudoaneurysm occurs when there is a breach in the arterial wall, leading to blood leakage that is contained by the surrounding tissue, forming a pulsatile hematoma with a fibrous capsule. After a femoral fracture , this typically results from: Direct trauma from the fracture fragments to the femoral artery (most often the superficial femoral artery). Iatrogenic injury during fracture fixation (e.g., intramedullary nailing, external fixation, or plate placement). Penetrating trauma or high-energy blunt trauma. 2. Etiology Blunt trauma (e.g., road traffic accidents) causing sharp bone edges to lacerate or puncture the artery. Iatrogenic injury during orthopedic surgical procedures. Penetrating trauma in open fractures. Delayed vascular injury due to bone fragment...