L7: Medial Thigh Muscles

Question 1

What are the Muscles of Medial Thigh?

Answer 1

Adductor Longus
Adductor Brevis
Adductor Magnus
Gracilis
Obturator Externus

Question 2

Adductor Longus

Answer 2

Origin: Body of pubis inferior to pubic crest

Insertion: Middle third of the linea aspera of the femur

Innervation: Obturator nerve (L2, L3, L4)

Function: Adducts hip joint

Question 3

Adductor Brevis

Answer 3

Origin: Body and inferior ramus of the pubis

Insertion: Pectineal line and proximal part of the linea aspera

Innervation: Obturator nerve (L2, L3, L4)

Function: Adducts hip joint and, to some extent, flexes it

Question 4

Adductor Magnus (Adductor Part)

Answer 4

Adductor Part Origin: Inferior ramus of pubis, ramus of ischium

Insertion (Adductor Part): Gluteal tuberosity, linea aspera, medial supracondylar line

Innervation (Adductor Part): Obturator nerve (L2, L3, L4)

Function: Adducts hip joint; its adductor part also flexes hip joint, and its hamstring part extends it.

Question 5

Adductor Magnus (Hamstring Part)

Answer 5

Hamstring Part Origin: Ischial tuberosity

Insertion (Hamstring Part): Adductor tubercle of femur

Innervation (Hamstring Part): Tibial part of the sciatic nerve (L4)

Function: Adducts hip joint; its adductor part also flexes hip joint, and its hamstring part extends it.

Question 6

Gracilis

Answer 6

Origin: Body and inferior ramus of the pubis

Insertion: Superior part of the medial surface of the tibia (as part of pes anserinus)

Innervation: Obturator nerve (L2, L3)

Function: Adducts hip joint; flexes knee joint, medially rotating it when flexed

Question 7

Obturator Externus

Answer 7

Origin: Margins of obturator foramen and obturator membrane

Insertion: Trochanteric fossa of the femur

Innervation: Obturator nerve (L3, L4)

Function: Laterally rotates hip joint; stabilizes hip joint