Peroneus Tertius

Original Editor - Lilian Ashraf

Top Contributors - Sai Kripa, Kim Jackson, Claire Testa and Lilian Ashraf

Description

Peroneus tertius muscle

The Peroneus Tertius muscle also called as the Fibularis Tertius is one of the 3 peroneal muscles (peroneus longus, Peroneus Brevis).[1] It is present on the anterior compartment of leg along with tibialis anterior, extensor hallucis longus and extensor digitorum longus[2] This muscle is absent in 5% to 17% of the human white population.[3]

Origin

Distal half or third of the fibula.[4]

Insertion

Base of the 5th metatarsal.[4]

[5]

Nerve

Deep peroneal nerve.[1]

Artery

Anterior Tibial artery[2]

Function

Secondary function in foot dorsiflexion and eversion.[4]

Clinical relevance

The strength of eversion and dorsiflexion is not compromised in people who lack the Peroneus Tertius muscle. Peroneus Tertius seems to not provide higher protection against ankle ligamentous injury.[3]

Peroneus Tertius Syndrome is a condition characterized by catching, clicking, locking or popping of peroneus tertius tendon over ankle during walking. It is a rare condition of anterolateral ankle pain or rear foot pain. This muscle deeply pass through the inferior extensor retinaculum and literature believe that this syndrome could be secondary to impingement and constriction of peroneus tertius.[2]

When a person gets indulge in too much of exercise, the anterior compartment muscles become painful or tender to touch leading to anterior compartment syndrome or fresher's syndrome.[2]

References

  1. 1.0 1.1 Lippert, Lynn S. Clinical Kinesiology and Anatomy. 5th ed. Philadelphia: F A Davis Company; 2016.
  2. 2.0 2.1 2.2 2.3 Chaurasia BD. Human Anatomy Regional and Applied Dissection and Clinical. Vol 2. CBS Publishers and Distributors Pvt Ltd, 2010
  3. 3.0 3.1 Witvrouw E, Vanden Borre K, Willems TM, Huysmans J, Broos E, De Clercq D. The significance of peroneus tertius muscle in ankle injuries: a prospective study. The American journal of sports medicine. 2006 Jul;34(7):1159-63.
  4. 4.0 4.1 4.2 Witvrouw E, Vanden Borre K, Willems TM, Huysmans J, Broos E, De Clercq D. The significance of peroneus tertius muscle in ankle injuries: a prospective study. The American journal of sports medicine. 2006 Jul;34(7):1159-63.
  5. Nabil Ebraheim. Peroneus Tertius Muscle- Everything You Need To Know-Dr.Nabil Ebraheim Available from:https://www.youtube.com/watch?v=n6XWHKJg2OY [last accessed 11/05/2020]