Session 7 - Medial thigh muscles Flashcards
What are the five muscles in the medial compartments of the thigh?
gracilis, obturator externus, adductor brevis, adductor longus and adductor magnus
What do the muscles of the medial compartment of the thigh do?
Adduct the thigh at the hip
What innervates the medial compartment of the thigh?
Innervated by the obturator nerve
What supplies blood to the medial comparment of the thigh?
The obtuartor artery
What is A?
Obturator externus
What are the actions of the obturator externus?
Laterally rotates the thigh
What is the innervation of the obturator externus?
Obturator nerve (L2-L4)
What is B?
Adductor Brevis
What is the innervation of the adductor brevis?
Obturator nerve
What is the action of the adductor brevis?
Adduction of the thigh
What is C?`
Adductor longus?
What is the actions of the adductor longus?
Adduction and medial rotation of the thigh
What is the innervation of the adductor longus?
Obturator nerve
What are the nerve roots of the obturator nerve?
(L2-L4)
What is D?
Adductor Magnus
What is interesting about the size of the adductor magnus?
A portion of it can be found in the posterior compartment, as well as the medial
What parts is the adductor magnus split into?
Adductor component and hamstring portion
What is the action of the parts of the adductor magnus?
They both adduct the thigh. The adductor component also flexes the thigh, with the hamstring portion extending the thigh.
What is the innervation of the adductor magnus?
Adductor part is innervated by the obturator nerve (L2-L4) Hamstring part innervated by the tibial nerve (L4-S3)
What is A?
Gracillis
What is interesting about the gracillis muscle?
The only muscle of the medial compartment to cross at both the hip and knee joints
What is the action of the gracillis?
Adduction of the thigh at the hip and flexion of the leg at the knee
What is the innervation of the gracillis?
Obturator nerve (L2-L4)
