Posterior thigh and blood supply

Question 1

what nerve is affected if a patient has pain and numbness in the medial thigh region?

Answer 1

obturator nerve

Question 2

what sings can you look for to determine if you have obturator nerve damage?

Answer 2

weakness adductors

Question 3

muscles innervated by obturator nerve

Answer 3

longus
brevis
magnus
gracilis
pectinous

Question 4

What is the path of obturator nerve?

Answer 4

obturator canal (foramen)

Question 5

posterior thigh

Answer 5

hip extensors
knee flexors
hamstring muscles
ALL ATTACH AT ISCHIAL TUBEROSITY
Inn: Tibial Nerve
blood: Perforating arteries, DFA,

Question 6

Posterior thigh muscles

Answer 6

semitendinosus
semembranosus
bicep femoris Short/long head

Question 7

Semitendinosus

Answer 7

O: ischial tuberosity, sacrotuberous ligament
I: pes anserinus
Inn: tibial nerve
A: Hip ext, IR
Blood: Perforating arteries, IGA

Question 8

Semimembranosus

Answer 8

O: ischial tubersity
I: medial condyle of tibia
Inn: tibial nerve
A: Hip etc, IR
Blood: Perforating arteries, IGA

Question 9

bicep femoris long head

Answer 9

O: ischial tuberosity
I: head of fibula
Inn: tibial nerve
A: Hip ext, ER
Blood: Perforating arteries, IGA

Question 10

bicep femoris short head

Answer 10

O: ischial tuberosity - later linea aspera of the femur
I: head of fibula
Inn: tibial nerve
A: hip ext, ER
Blood: perforating arteries, IGA

Question 11

true or false: biceps femoris is removed to see the deeper arteries/veins

Answer 11

true

Question 12

Sciatic nerve splits into

Answer 12

Common fibular nerve
tibial nerve

Question 13

posterior femoral cutaneous nerve (S1-S3

Answer 13

inferior clonal branches and branches to the perineum

Question 14

tibial nerve (L4-S3)

Answer 14

innervates superficial and deep muscles of the popliteal fossa and posterior leg muscles and hamstring (posterior thigh)

Question 15

common fibular nerve (L4-S2)

Answer 15

spirits into superficial and deep nerves which innervate to the lateral and anterior leg

Question 16

Popliteal region (diamond) made up of

Answer 16

semimembranosus (Superomedial)
gastrocnemius medial head (inferomedial)
Biceps femoris (superolateral)
gastrocnemius lateral head ( inferolateral)

Question 17

Popliteal region contents: 6

Answer 17

popliteal A/V
tibial nerve
common fibular nerve
lymphatic vessels
posterior femoral cutaneous nerve
small saphenous vein

Question 18

what space is located between the two attachments of adductor magnus?

Answer 18

adductor hiatus

Question 19

Popliteus

Answer 19

O: lateral condyle of femur, lateral meniscus
I: posterior tibia
Inn: Tibial nerve
A: rotation (unlock knee)
Blood: popliteal artery

Question 20

true or false: a third head (accessory head) of the gastrocnemius is described as “not uncommon?”

Answer 20

true

Question 21

true or false third head only sups up in about 5-10% of the population ?

Answer 21

false (2-5%)

Question 22

where does the third head usually sit by?

Answer 22

runs lateral to the popliteal vessels but occasionally joins in the with the medial head compression the popliteal vessels

Question 23

baker’s cyst (popliteal cyst) occurs when

Answer 23

synovial fluids leaves the synovial membrane/cavity

(hurts the most when doing knee flexion)