Back Of Thigh

Question 1

Hamstring pull or strain

Answer 1

Happens when hamstring muscles are stretched too much during sports.
Can be mild with less pain and short recovery time.
Severe with more pain and long recovery time.

Question 2

What happens if hamstring muscles are paralysed

Answer 2

Person will fall forward because gluteals maximus alone can’t make the person stand upright.

Question 3

Hamstringing the enemy

Answer 3

Old times soldiers used to cut the back of knee of horses to bring it down and also hamstring of other soldier so that they couldn’t run.

Question 4

From where does sciatic nerve arise

Answer 4

It arise from lumbosacral plexus from anterior rami of last two lumbar and first three sacral nerves. (L4 L5 S1 S2 S3)

Question 5

Sciatic nerve formed infront of which muscle

Answer 5

Pyriformis

Question 6

Two parts of sciatic nerve and it’s root value

Answer 6

Tibial part formed by ventral division of anterior primary rami of L4 L5 S1 S2 S3.
Common perineal part formed by dorsal division of anterior primary rami of L4 L5 S1 S2

Question 7

Extent of sciatic nerve

Answer 7

From pyriformis to superior angle of popliteal fossa by dividing to tibial and perineal part

Question 8

Deep relations of sciatic nerve

Answer 8

Body of ischium
Tendon of obturator internus
Gamelae superior
Gamelae inferior
Quadratus femoris
Adductor Magnus.

Question 9

Superficial relation of sciatic nerve

Answer 9

Gluteus maximus
Long head of biceps femoris

Question 10

Muscular distribution of sciatic

Answer 10

Articular branch to hip joint.
Hamstring muscles.
Short head of biceps.
All muscles of legs through its terminal branches.

Question 11

Sensory distribution of sciatic nerve

Answer 11

No direct sensory distribution.
Indirectly supplies the skin lateral aspect of leg and heel.
Dorsum and plantar surface of foot by its terminal branches.

Question 12

Sleeping foot

Answer 12

In the back of thigh, sciatic nerve is uncovered at lower angle between the gluteus maximus and long head of biceps femoris.
Temporary compression of sciatic nerve against femur at lower border of gluteus maximus causes parasthesia of lower limb.

This is called sleeping foot.

Question 13

Sciatica

Answer 13

Pain in lower limb.
It starts at low back and radiates down buttock along sciatic nerve on the outer side of leg and often to foot.

Question 14

Boundaries of popliteal fossa

Answer 14

Superolateral: biceps femoris
Superomedially: semitendinosus and semimembranosus
Inferolateral: lateral head of gastrocnemius
Plantaris.
Inferomedially: medial head of gastrocnemius.
Floor: popliteal surface of femur
Capsule of knee joint
Popliteal fascia covering popliteal muscle.
Roof: skin and superficial fascia.