It is a long bone located on the side of the little finger. The shaft is triangular in shape. The front edge of the bone shaft is an attachment for the extensor longus muscle (m. extensor digitorum longus). The middle part of the shaft is the site of attachment of the short fibular muscle (m. fibularis sive peroneus brevis). The head of the bone and the shaft of the fibula are the site of attachment of the long fibular muscle (m. fibularis sive peroneus longus). The big toe flexor muscle (m. flexor digitorum longus) is attached to the posterior surface of the arrow shaft.