LL: Thigh

Question 1

Arterial blood supply of lower limb

Answer 1

External iliac → femoral (under inguinal lig.)

Femoral → profunda femoris (supplies all thigh muscles), superficial femoral

Superficial femoral → popliteal (after going through adductor hiatus)

Popliteal gives five genicular branches (superior medial, superior lateral, inferior medial, inferior lateral, middle)

Popliteal → anterior tibial , tibiofubular trunk

Anterior tibial pierces interosseus membrane, runs down, becomes dorsalis pedis

Tibioperoneal → Peroneal (larger), Posterior tibial

Posterior tibial → medial and later plantar

Lateral + dorsalis pedic → plantar arch

Question 2

Surface marking for lateral cutaneous n of the thigh

Answer 2

1-2 cm medial and inferior to ASIS

Question 3

Muscles of anterior compartment

Answer 3

Illiacus

Sartorius

Pectineous

Psoas

Quadiceps femoris : vastus lateralis, intermedius, medialis, recetus femoris

Question 4

Origin and insertion of Psoas major

Answer 4

TX11 to LV

Question 5

Origin and insertion of Iliacus

Answer 5

Iliac fossa

Lesser trochanter

Question 6

Origin and insertion of Vastus medialis, intermedius and lateralis

Answer 6

Intertrochanteric line

Quadriceps femoris tendon

Question 7

Origin and insertion of rectus femoris

Answer 7

Straight head from ASIS, reflected head from ilieum

Quadriceps femoris tendon

Question 8

Origin and insertion of sartorius

Answer 8

ASIS

Medial to tibial tuberosity

Question 9

Action of psoas major

Answer 9

Flexes thigh at hip

Question 10

Action of iliacus

Answer 10

Flexes thigh at hip

Question 11

Action of Vastus muscles

Answer 11

Knee extension

Question 12

Action of rectus femoris

Answer 12

Hip flexion and knee extension

Question 13

Action of sartorius

Answer 13

Hip flexion

Knee flexion

Question 14

Iliacus innervation

Answer 14

Femoral

Question 15

Psoas innervation

Answer 15

L1 to L3

Question 16

Pes anserinus

Answer 16

Combined tendons of sartorius, gracilis and semitendinosus insertion on tibia

Question 17

Muscles of medial compartment

Answer 17

Obturator externus

Adductor magnus

Pectineus

Adductor brevis

Adductor longus

Question 18

Origin and insertion of gracillis

Answer 18

Body of pubis to medial tibia

Question 19

Origin and insertion of pectineus

Answer 19

Pectineal line of pubis to lesser trochanter/linea aspera

Question 20

Origin and insertion of adductor longus

Answer 20

Body of pubis to Linea aspera

Question 21

Origin and insertion of adductor brevis

Answer 21

Body of pubic bone to posterior femur

Question 22

Origin and insertion of adductor magnus

Answer 22

ischial tuborosity to adductor tubercle

Question 23

Origin and insertion of obturator externus

Answer 23

External surface of obturator membrane to trochanteric fossa

Question 24

Innervation of medial compartment

Answer 24

Mostly obturator nerve

Pectineus: femoral

Adductor magnus: sciatic and obturator

Question 25

Action of gracillis

Answer 25

Adducts hip Flexes knee

Question 26

Action of pectineus

Answer 26

Adducst hip Flexes hip

Question 27

Action of adductor longus, brevis and magnus

Answer 27

Adducts hip Medially rotate thigh at hip joint

Question 28

Action of obturator externus

Answer 28

Laterally rotates thigh at hip joint

Question 29

Borders of adductor canal

Answer 29

Posterior: adductor magnus and longus Anterior/lateral: vastus medialis Medial: sartorius

Question 30

Contents of adductor canal

Answer 30

Femoral artery, vein Saphenous nerve, nerve to vastus medialis (Nerves dont go through, just cross)

Question 31

Adductor canal aka

Answer 31

subartorial canal Hunters canal

Question 32

Significance of adductor canal

Answer 32

Anatomical narrowing Common site for turbulent flow and atherosclerosis

Question 33

Muscles of the posterior compartment

Answer 33

Biceps femoris Semitendious Semimembranous

Question 34

Origin and insertion of biceps femoris

Answer 34

Ischial tuborosity to head of fibula

Question 35

Origin and insertion of semitendinous

Answer 35

Ischial tuberosity to tibia

Question 36

Origin and insertion of semimembranous

Answer 36

ischial tuborosity to medial tibia

Question 37

Innervation of posterior compartment

Answer 37

Sciatic nerve

Question 38

Action of posterior compartment

Answer 38

Knee flexion Hip extension

Question 39

Arterial supply of the thigh

Answer 39

Profunda femoris gives of medial and lateral circumflex femoral arteries

Question 40

Femoral nerve branches

Answer 40

Question 41

Which tendon is used in ACL repair

Answer 41

semitendinous or patellar tendon

Question 42

Dynamic stabilisers of patella (prevent recurrance of dislocation)

Answer 42

Anteriorly quads Posteriorly hamstrings Medial/lateral: gastrocnemius

Question 43

Origin and insertion of ACL

Answer 43

Medial wall of lateral condyl to intercondylar eminence

Question 44

Innervation of short and long head of biceps femoris

Answer 44

Short- common fibular Long- tibial nerve

Question 45

Which artery could be injured at the saphenofemoral junction

Answer 45

deep external pudendal artery (branch of superficial femoral artery)

Question 46

Gluteal tuberosity

Answer 46

Site of attachment of Gluteus maximus