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It could also occur from reduce bone mass in the elderly. In the elderly population, slipped and fall is the cause of fibula bone fracture. Downhill skier, snowboarding, and skiers have a high rates of fibula bone fractures as well. The injury is common in athlete who is engaged in collision or contact sport such as soccer, football, basketball, rugby and Lacrosse. The fracture occurs from a direct blow to the outside of the leg, from twisting the lower leg awkwardly and, most common, from a severe ankle sprain. The fibula is a site of five muscles attachment.įibula bone fracture is a common injury seen in the emergency room. There are nerves tissues, veins and arteries which pass behind the fibula, near the knee. The interosseous membrane also helps in transferring rotational forces from the ankle to the knee. The mechanism of transferring ground reaction forces occurs due to muscles attachments on the upper part of the fibula bone underneath the knee. Moreover, it transfers forces as the ankle hits the ground during walking. The fibula bone bears only 15 to 20% of the body weight. The tibia bears approximately 80% of the body weight. It can also slides up and down during ankle motion inward and outward.įibula bone plays a minor role in bearing the weight of the body as we walk. The fibula can bend slightly and it can also rotate within its ligament. The ligaments and the interosseous membrane have a little flexibility in them, to allow the ankle joint and the two bones to move during walking and motion of the ankle. The interosseous membrane binds the two bones together to keep them stable. There is also a soft tissue in between the two bones, called the interosseous membrane, which runs the length of the two bones. The two bones, tibia and fibula, are connected by ligaments underneath the knee and at the ankle. It forms the base of the knee called the tibial plateau and extends down to form the inside of the ankle joint. Next to the fibula bone is the tibia, which is thicker. Fibula is a slender and long bone located on the outside of the lower leg, from outside and underneath the knee and extends down to form the outside of the ankle joint.