Tibia and fibula provide stability and articulation from "summary" of Bd Chaurasia's Human Anatomy, Volumes 3 & 4 by B. D. Chaurasia
The tibia and fibula, the two bones of the lower leg, play a crucial role in providing stability and allowing for articulation in the leg. These bones work together to support the weight of the body and facilitate movement. The tibia, also known as the shinbone, is the larger and stronger of the two bones. It is located on the medial side of the leg and bears the majority of the body's weight. On the other hand, the fibula is the slender bone located on the lateral side of the leg. The tibia and fibula are connected by strong ligaments that help to maintain their relationship and provide stability to the lower leg. These ligaments include the interosseous membrane, which spans the space between the two bones and helps to distribute forces evenly between them. Additionally, the tibia and fibula are held together by the superior tibiofibular joint and the inferior tibiofibular joint. These joints allow for slight movement between the two bones while still maintaining stability. In terms of articulation, the tibia and fibula form important connections with other bones in the leg. The tibia articulates with the femur at the knee joint, forming the primary weight-bearing joint of the lower limb. This articulation allows for flexion and extension of the leg. The fibula, while not directly involved in weight-bearing, articulates with the tibia at the superior tibiofibular joint and the inferior tibiofibular joint. These articulations allow for slight movement and flexibility in the lower leg.- The tibia and fibula work together to provide stability and articulation in the lower leg. Their strong ligamentous connections and articulations with other bones allow for smooth movement and weight-bearing in the leg. Understanding the role of these bones is essential for comprehending the biomechanics of the lower limb.
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