Medial compartment of the thigh Flashcards

1
Q

What are the muscles of the medial thigh collectively known as?

A

Hip Adductors.

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2
Q

What muscles make up the medial thigh?

A

Gracilis, Obturator Externus, Adductor Brevis, Adductor Longus, and Adductor Magnus.

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3
Q

Where is the origin of the Adductor magnus muscle?

Adductor and Hamstring part

A

Adductor part – Originates from the inferior rami of the pubis and the rami of ischium

Hamstring part - Originates from the ischial tuberosity

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4
Q

Where does Adductor Magnus insert?

A

Adductor part - the linea aspera of the femur.

Hamstring part - adductor tubercle and medial supracondylar line of the femur.

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5
Q

What are the actions of Adductor Magnus?

A

hey both adduct the thigh. The adductor component also flexes the thigh, with the hamstring portion extending the thigh.

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6
Q

What innervates Adductor Magnus?

A

Adductor part is innervated by the obturator nerve (L2-L4), the hamstring part is innervated by the tibial component of the sciatic nerve (L4-S3).

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7
Q

Where is the origin of the Adductor Longus muscle?

A

The pubis.

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8
Q

Where does Adductor Longus insert?

A

Linea aspera of the femur.

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9
Q

What is the action of Adductor Longus?

A

Adduction of the thigh.

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10
Q

What innervates Adductor Longus?

A

Obturator nerve.

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11
Q

Where is the origin of the Adductor Brevis muscle?

A

Originates from the body of pubis and inferior pubic rami.

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12
Q

Where does the Adductor Brevis insert?

A

linea aspera on the posterior surface of the femur, proximal to the adductor longus.

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13
Q

What is the action of the Adductor Brevis muscle?

A

Adduction of the thigh.

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14
Q

What is the innervation of the Adductor Brevis?

A

Obturator nerve.

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15
Q

Where is the origin of Obturator Externus?

A

It originates from the membrane of the obturator foramen, and adjacent bone.

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16
Q

Where does the Obturator Externus muscle insert?

A

attaching to the posterior aspect of the greater trochanter.

17
Q

What are the actions of the Obturator Externus?

A

Adduction and lateral rotation of the thigh.

18
Q

What innervates Obturator Externus?

A

Obturator nerve.

19
Q

Where is the origin of the Gracilis muscle?

A

It originates from the inferior rami of the pubis, and the body of the pubis.

20
Q

Where does the Gracilis insert?

A

Attaches to the medial surface of the tibia, between the tendons of the sartorius (anteriorly) and the semitendinosus (posteriorly).

21
Q

What are the actions of the Gracilis muscle?

A

Adduction of the thigh, flexion of the leg at the knee.

22
Q

What innervates the Gracilis muscle?

A

The Obturator nerve.