Musculus fibularis longus

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Musculus fibularis longus
Calf muscles
Head and outer surface of the fibula
Os cuneiforme mediale , Os metatarsale I (1st metatarsal bone)
Plantar flexion and pronation of the foot
Superficial fibular nerve
Spinal segments
L5, S1

The musculus fibularis longus ( Latin for "long fibula muscle ") is one of the muscles on the fibula side of the lower leg . In everyday clinical practice in particular, it is still often referred to as the peroneus longus muscle, despite the name change in the Terminologia Anatomica (from 1998) . Its origin is at the proximal end of the fibula and the lateral condyle of the tibia. As with the anterior tibial muscle, its insertion is on the medial cuneiform (plantar) and on the first metatarsal (base). The tibialis anterior et fibularis longus muscles together form the so-called "stapes". The name comes from the fact that the tibialis anterior muscle from the medial (inside) and the fibularis longus muscle from the lateral (outside) surround the foot like a stirrup. At the transition over the outer malleolus, the tendon of the musculus fibularis longus lying in a tendon sheath is stabilized by the retinacula musculorum fibularium together with that of the musculus fibularis brevis .

In horses musculus peroneus longus is not formed.


The tasks of the musculus fibularis longus are plantar flexion (stretching downwards) and pronation of the foot . Due to its transverse course, the tendon gives stability to the transverse arch of the foot.

In animals, the muscle acts as a flexor of the ankle .

Individual evidence

  1. ^ A b Franz-Viktor Salomon: muscle tissue. In: Anatomy for veterinary medicine. 2nd ext. Edition. Enke, Stuttgart 2008, ISBN 978-3-8304-1075-1 , pp. 147-234.