Triceps Surae: Difference between revisions
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== Description == | == Description == | ||
The triceps surae is a term applied to the calf | 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>. These muscles are part of the superficial posterior compartment of the leg. | ||
== | == Structure == | ||
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, and insert 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<ref name=":0" />. | |||
== Function == | == Function == | ||
The triceps surae muscles form the achilles tendon distally, producing the majority of ankle dorsiflexion (up to 93%). | The triceps surae muscles form the achilles tendon distally, producing the majority of ankle dorsiflexion (up to 93%)<ref name=":0" />. | ||
== Clinical Significance == | == Clinical Significance == | ||
Revision as of 23:39, 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]. These muscles are part of the superficial posterior compartment of the leg.
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, and insert 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 muscles form the achilles tendon distally, producing the majority of ankle dorsiflexion (up to 93%)[1].
Clinical Significance[edit | edit source]
Resources[edit | edit source]
- bulleted list
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or
- numbered list
- x
