NCIt definition : The more superficial of the two muscles (peroneus longus and peroneus brevis) of the
lateral compartment of the lower leg, which originates at the superior, lateral shaft
of the fibula and inserts on the first metatarsal and the medial cuneiform, functioning
to plantar flex and evert the foot, and which supports the lateral, longitudinal,
and transverse arches.;
Alternative definition : CDISC: A muscle of the lower leg, in general extending from the superior lateral shaft
of the fibula to the first metatarsal and the medial cuneiform; primary function is
to plantar flex and evert the foot and support the lateral, longitudinal, and transverse
arches.;