fibula

The fibula or calf bone is a bone located on the lateralside of thetibia with which it is connected above and below. It is the smaller of the two bones, and, in proportion to its length, the most slender of all the long bones. Its upper extremity is small, placed toward the back of the head of the tibia, below the level of the knee joint and excluded from the formation of this joint. Its lower extremity inclines a little forward, so as to be on a plane anterior to that of the upper end; it projects below the tibia, and forms the lateral part of the ankle-joint.

Etymology

The word Fibula can be dated back to c. 1670, defining a clasp or brooch, and was first used in English for the smaller bone in the lower leg c. 1706. It derives from Latin fībula also meaning a clasp or brooch. The bone was so called because it resembles a clasp like a modern safety pin.

Blood supply

The blood supply is important for planning  free treasurebecause the fibula is commonly used to reconstruct the mandible. The shaft is supplied in its middle third by a large nutrient vessel frrom yperoneal arteryIt is also perfused from its periosteum which receives many small branches from the peroneal artery.

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