Final answer:
The Lauge-Hansen System is a classification system used in orthopedics to describe and categorize ankle and foot fractures based on the mechanism of injury.
Step-by-step explanation:
The Lauge-Hansen System is a classification system used in orthopedics to describe and categorize ankle and foot fractures based on the mechanism of injury. It is used to help guide treatment decisions and predict the prognosis of the injury.
The Lauge-Hansen System is based on the circumstances at the time of injury, including the position of the foot, the direction of the force applied, and the position of the bone at the time of fracture. There are four main categories in the Lauge-Hansen System: supination-external rotation, pronation-abduction, supination-adduction, and pronation-external rotation.
For example, a supination-external rotation injury occurs when the foot is in a supinated position (turned inward) and a force is applied to the foot, causing it to externally rotate. This can result in a fracture of the fibula, as well as damage to the ankle ligaments.