Tibio-Fibular Articulation

The head of the fibula articulates with a crescentic facet just below the outer margin of the external condyle of the tibia. The joint capsule is strong and close. The shaft of the fibula is attached to the external border of the tibia by the interosseous membrane of the leg (Membrana interossea cruris); this is perforated about an inch from its proximal end by an opening which transmits the anterior tibial vessels to the front of the tibia. A fibrous cord usually extends from the distal end of the shaft of the fibula to the external malleolus. The latter is the distal end of the fibula which has fused with the tibia. No appreciable movement occurs in this joint.