þráðbeini

þráðbeini is an Icelandic term that translates to "thread bone" or "spindle bone". It refers to the fibula, which is the smaller of the two bones in the lower leg, located on the lateral side. The fibula is a long, slender bone that runs parallel to the tibia, the larger bone of the lower leg. While the tibia bears most of the body's weight, the fibula plays a crucial role in stabilizing the ankle joint and providing attachment points for muscles.

In Icelandic anatomy, þráðbeini is the specific term used. Its shape and relative thinness compared to the tibia likely contributed to its descriptive name, evoking the image of a thin, thread-like bone. Fractures of the þráðbeini are common, particularly in sports-related injuries or falls, often occurring at the ankle. These fractures can range in severity and may involve the distal end of the fibula, where it forms part of the ankle mortise. Surgical intervention may be necessary for displaced or unstable fractures to ensure proper healing and restoration of ankle function. The understanding and terminology of the þráðbeini are integral to Icelandic medical discourse and anatomical education.