Peroneus (Fibularis) Longus Muscle
Original Editor - Jenny Lim
Top Contributors - Jenny Lim, Beverly Klinger, Vidya Acharya, Patti Cavaleri, Kim Jackson, Leana Louw and Oyemi Sillo
Description[edit | edit source]
The Peroneal Longus (also known as Fibularis Longus) lies superficially at the lateral part of the lower leg. It is one of the three peroneal muscles.
Anatomy[2][edit | edit source]
Origin[edit | edit source]
Lateral condyle of tibia,
Head and proximal two-thirds of the lateral surface of fibula,
Intermuscular septa, and
Adjacent deep fascia.
Insertion[edit | edit source]
Lateral side of base of first metatarsal and of medial cuneiform bone.
Nerve[edit | edit source]
Superficial fibular (peroneal) nerve, L4,5,S1.
Artery[edit | edit source]
Fibular (peroneal) artery.
Function[edit | edit source]
Everts the foot, assists in plantar flexion and
In weight-bearing position depresses head of first metatarsal due to the strong pull on its insertion.
Maintains the transverse arch of the foot, due to how it crosses the sole of the foot.
Steadies the leg on the foot by drawing on the lateral leg, and stops it from collapsing medially.
Clinical relevance[edit | edit source]
Assessment[edit | edit source]
Peroneus longus and brevis tests
Weakness[edit | edit source]
The weakness of Peroneus lessens the ability to rise on the toes, decreases the lateral stability of the ankle and allows a varus position of the foot.
Length[edit | edit source]
Contracture results into an everted or valgus foot.
Treatment[edit | edit source]
| [3] | [4] |
References[edit | edit source]
- ↑ nabil ebraheim. Anatomy Of The Peroneus Longus Muscle - Everything You Need To Know - Dr. Nabil Ebraheim. Available from: https://www.youtube.com/watch?v=v_0TSoPzd3A [last accessed 17/6/18]
- ↑ Kendall, McCreary, Provance; Muscle Testing and Function; Philadelphia; 4th Edition; Lippincott Williams & Wilkins; 1993; Peroneus Longus and Brevis; Page No:203.
- ↑ ReBalance Physiotherapy. Day -69: Peroneal Strengthening. Available from: https://www.youtube.com/watch?v=3Xpwd5gTzXw [last accessed: 17/6/18]
- ↑ Tim Trevail. Dry Needling: Peroneus Longus & Brevis. Available from: https://www.youtube.com/watch?v=ON0s8OFXfOs [last accessed: 17/6/18]
