Unit 3- Medial Thigh Muscles

Question 1

Adductors are mostly innervated by the

Answer 1

Obturator nerve

Question 2

Medial thigh muscles attach where?

Answer 2

Proximally to the anterior interior bony pelvis and obturator membrane and distally to the linea aspersions

Question 3

OINA for Pectineus

Answer 3

OR: Pectin pubis

INS: Pectineal line of femur inferior to lesser trochanter

NS: Femoral nerve

AC: Adducts and flexes thigh at the hip and assists with medial rotation of the thigh

Question 4

OINA for Adductor longus

Answer 4

OR: Superior pubic ramus

INS: Medial 1/3 linea aspera

IN: Anterior branch obturator nerve

AC: Adducts thigh

Question 5

OINA for adductor brevis

Answer 5

OR: Body and inf ramus of pubis

INS: Pectineal line and proximal part of the linea aspera

NS: Anterior branch obturator nerve

AC: Adducts thigh and has some medial rotation and flexor function

Question 6

The obturator nerve and artery split to:

Answer 6

Surround the adductor brevis (anterior and posterior divisions)

Question 7

OINA for adductor magnus (a hamstring)

Answer 7

OR: Interior pubic ramus (adductor)
Ischial ramus (adductor)
Ischial tuberosity (hamstring)

INS: Gluteal tuberosity
Linea aspera
Medial supracondylar line (adductor)
Adductor tubercle (hamstring)

NS: Post branch obturator nerve (adductor)
Tibial part of sciatic nerve (hamstring)

AC: Adducts and medial rotates and flexes thigh (adductor)
Extends thigh and externally rotates (HAMSTRING)

Question 8

A small flat muscle in the medial compartment which constitutes the upper, lateral part of the adductor magnus muscle

Answer 8

Adductor minimus (Adductor femoris minimus or adductor quartus)

THIS IS PART OF ADDUCTOR MAGNUS!

Question 9

The only adductor to cross the hip and knee joints

Answer 9

Gracious

Question 10

OINA for gacilis

Answer 10

OR: Inf ramus of the pubis

INS: Superior medial tibia (pets anseriunus)

NS: Anterior branch obturator nerve

AC: Adducts thigh, flexes and medially rotates leg

Question 11

Gracilis adds _____ _____ to the extended knee

Answer 11

Medial stability

Question 12

OINA for obturator External

Answer 12

OR: Sup ramus of the pubis
Obturator membrane
Ischial ramus

INS: Trochanteric fossa of femurs

NS: Posterior branch obturator nerve

AC: Laterally rotates leg
Steadies head of femur in acetabulum

Question 13

Obturator externus insertion on the posterior aspect of the proximal femur results in:

Answer 13

External (lateral) rotation with contraction

Question 14

Functions of the adductors

Answer 14

Adduction of the abducted thigh

Contribute to flexion of extended thigh AND extension of the flexed thigh

Assist in stabilization of bipedal stance

Question 15

Muscles involved in ALL adduction

Answer 15

Magnus, longus and brevis

Question 16

Despite the large muscle mass loss of up to 70% of adductor, function is

Answer 16

Tolerated without much dysfunction

Question 17

Femoral triangle

Answer 17

Anterior superior medial thigh

Question 18

Borders of the femoral triangle

Answer 18

Superior: Inguinal ligament

Medial: adductor longus

Lateral: sartorius

Floor: Iliophsoas (lateral)
Pectineus (medial)

Roof: Fascia lata, cribiform fascia, skin and subcutaneous tissue

Question 19

Space created by the inguinal ligament

Answer 19

Sub inguinal space

Question 20

Sub inguinal space runs between

Answer 20

The ASIS and pubic tubercle

Question 21

The inguinal ligament acts as:

Answer 21

A flexor retinaculum for anterior thigh neurovascular structures

Question 22

Sub inguinal space is divided into:

Answer 22

Muscular lacuna (iliopsoas and femoral nerve)

And

Vascular lacuna (veins, arteries and lymphatics)

Question 23

The femoral sheath surrounds the:

Answer 23

Femoral canal, femoral vein and femoral artery, but NOT the femoral nerve

Question 24

Th femoral canal contains the:

Answer 24

Lymphatics from the lower limb and cloquet’s lymph node and empty space to allow expansion of the femoral vein during increased blood flow or volume

Question 25

Femoral sheath allows the femoral artery and vein to:

Answer 25

Glide with hip movements

Question 26

Femoral sheat is formed by

Answer 26

A prolongation of the inferior portion of the transversalis fascia and iliopsoas fascia

Question 27

3 compartments of the femoral sheath

Answer 27

Lateral- Femoral artery Intermediate- Femoral vein Medial - femoral canal

Question 28

The femoral nerve (IS/IS NOT) contained within the femoral sheath

Answer 28

Is not

Question 29

The femoral canal is surrounded by

Answer 29

The femoral ring

Question 30

Borders of the femoral canal

Answer 30

Lateral- femoral septum Posterior- Superior ramus of the pubis covered by the Pectineus Medial- Lacunal ligament Anterior- Medial inguinal ligament

Question 31

Location of adductor canal

Answer 31

Apex of the femoral triangle to the adductor hiatus, the middle third of the thigh

Question 32

Adductor canal transmits the:

Answer 32

Femoral artery, vein, saphenous nerve and nerve to the vastus medialis

Question 33

Adductor canal (hunter’s canal) runs:

Answer 33

At the border of the medial and anterior compartments

Question 34

Adductor hiatus is a gop in the aponeurosis of the ___________, sometimes between the____ and ______ sections

Answer 34

Distal adductor magnus Adductor and hamstring sections

Question 35

Adductor hiatus transmits the:

Answer 35

Femoral artery and vein from the anterior compartment of the thigh to the popliteal fossa, posterior to the knee.