- any of several muscles on the outer side of the leg, the action of which assists in extending the foot and in turning it outward.
Origin of peroneus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for peroneus
No serious changes are present except in the peroneus longus.Surgical Experiences in South Africa, 1899-1900
George Henry Makins
On the tibiotarsus, the peroneus and gastrocnemius muscles were measured.Phylogeny of the Waxwings and Allied Birds
M. Dale Arvey
In man, two muscles constitute this region; they are the peroneus longus and peroneus brevis.
The peroneus longus arises from the external tuberosity of the tibia; towards the middle of the leg it is replaced by a tendon.
The flexors of the toes, the tibialis posterior, and the peroneus longus are shortened to a less degree.