Triceps Surae: Difference between revisions
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== Description == | == Description == | ||
The triceps surae is a term applied to the muscles of the calf, specifically the soleus muscle and the two-headed (medial & lateral) gastrocnemius muscle<ref name=":0">Keith LM, Arthur FD, Anne MR. Clinically oriented anatomy. Clinically oriented anatomy. 2006.</ref> | The triceps surae is a term applied to the muscles of the calf, specifically the soleus muscle and the two-headed (medial & lateral) gastrocnemius muscle<ref name=":0">Keith LM, Arthur FD, Anne MR. Clinically oriented anatomy. Clinically oriented anatomy. 2006.</ref>. | ||
== Structure == | == Structure == | ||
The triceps surae is part of the superficial posterior compartment of the leg<ref name=":0" />. | The triceps surae is part of the superficial posterior compartment of the leg<ref name=":0" />. | ||
It consists of a total of three heads, two from the gastrocnemius muscle and one from the soleus muscle, | It consists of a total of three heads, two from the gastrocnemius muscle and one from the soleus muscle, all inserting into the calcaneus (heel bone of the foot) through the achilles tendon. | ||
'''Gastrocnemius''' (superficial portion of the triceps surae)''':''' | '''Gastrocnemius''' (superficial portion of the triceps surae)''':''' | ||
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== Function == | == Function == | ||
The triceps surae | The triceps surae forms the achilles tendon distally, and is responsible for producing the majority of ankle dorsiflexion (up to 93%) in the sagittal plane, while stabilizing the ankle complex in the transverse plane<ref name=":0" />. | ||
Movement performed in the sagittal plane, stabilization during locomotion (walking, running), restraining the body from falling and power jumping are all functional activities of the triceps surae <ref>Honeine JL, Schieppati M, Gagey O, Do MC. [[The functional role of the triceps surae muscle during human locomotion]]. PloS one. 2013 Jan 16;8(1):e52943.</ref> | |||
== Clinical Significance == | == Clinical Significance == | ||
Revision as of 23:54, 30 December 2020
Original Editor - Shejza Mino
Top Contributors - Shejza Mino, Kim Jackson and Lucinda hampton
Description[edit | edit source]
The triceps surae is a term applied to the muscles of the calf, specifically the soleus muscle and the two-headed (medial & lateral) gastrocnemius muscle[1].
Structure[edit | edit source]
The triceps surae is part of the superficial posterior compartment of the leg[1].
It consists of a total of three heads, two from the gastrocnemius muscle and one from the soleus muscle, all inserting into the calcaneus (heel bone of the foot) through the achilles tendon.
Gastrocnemius (superficial portion of the triceps surae):
- Origin - femoral condyles, specifically:
- Lateral head: Lateral condyle of the femur
- Medial head: Medial condyle of the femur
Soleus (deep to the gastrocnemius):
- Origin - posterior aspect of the fibular head, soleal line on the medial border of the tibia
The triceps surae is innervated by the tibial nerve, nerve roots S1, S2[1].
Function[edit | edit source]
The triceps surae forms the achilles tendon distally, and is responsible for producing the majority of ankle dorsiflexion (up to 93%) in the sagittal plane, while stabilizing the ankle complex in the transverse plane[1].
Movement performed in the sagittal plane, stabilization during locomotion (walking, running), restraining the body from falling and power jumping are all functional activities of the triceps surae [2]
Clinical Significance[edit | edit source]
Resources[edit | edit source]
- bulleted list
- x
or
- numbered list
- x
