Tibia and fibula are the leg bones that forms the part of a lower limb.
Tibia
-It is the larger, medial, weight-bearing bone of the leg.
-The tibia articulates at its proximal end with the femur and fibula, and at its distal end with the fibula and the talus bone of the ankle.
-The tibia and fibula, are connected by an interosseous membrane.
-The proximal end is expanded into a lateral condyle and a medial condyle.
-These articulate with the condyles of the femur to form the lateral and medial tibiofemoral (knee) joints.
-The inferior surface of the lateral condyle articulates with the head of the fibula.
-The condyles are separated by a projection called the intercondylar eminence.
-The tibial tuberosity on the anterior surface is a point of attachment for the patellar ligament.
-Inferior to the tibial tuberosity is a sharp ridge is the anterior border.
– The medial surface of the distal end of the tibia forms the medial malleolus that articulates with the talus of the ankle.
-The fibular notch articulates with the distal end of the fibula to form the distal tibiofibular joint.
Fibula
-It is located lateral and is smaller to the tibia.
-It does not articulate with the femur, but it stabilizes the ankle joint.
-The head of the fibula is the proximal end which articulates with the inferior surface of the lateral condyle of the tibia to form the proximal tibiofibular joint.
-The distal end has a projection called the lateral malleolus that articulates with the talus of the ankle, which can be seen as prominence in the lateral surface of the ankle.
-It articulates with the tibia at the fibular notch to form the distal tibiofibular joint.
