grays lower limb anatomy

Question 1

injury to L4

Answer 1

affects inversion by tibialis anterior

Question 2

fibularis longus and brevis are innervated by

Answer 2

superficial fibular nerve

Question 3

transection of fibular division of sciatic nerve results in

Answer 3

loss of anterior and lateral muscle compartments

Question 4

sciatic nerve injury

Answer 4

loss of hamstring and muscles below knee function

Question 5

what nerve injury would cause loss of plantar flexion and impaired inversion?

Answer 5

tibial nerve

Question 6

L4 dermatome supplies

Answer 6

medial leg and foot

Question 7

loss of achiles tendon reflex applies to what root?

Answer 7

S1

Question 8

injury to superior gluteal nerve does,,,

Answer 8

gluteus medius and minimus motor loss

+ trendelenbergs –> when standing on injured side, opposite (unaffected)side pelvis drops

Question 9

what muscle and nerve allow rising from seated position and stairs?

Answer 9

inferior gluteal nerve and gluteus maximus

Question 10

hamstrings are innervated by…and allow…

Answer 10

tibial brnch of sciatic nerve; flex leg (sit from standing)

Question 11

what injury causes foot drop?

Answer 11

deep fibular nerve

Question 12

the fbularis longus and brevis do what action?

Answer 12

eversion of foot

Question 13

what nerve provides medial side of leg and foot with sensation ( NO MOTOR)

Answer 13

saphenous nerve

Question 14

saphenous hiatus/fossa ovalis

Answer 14

where saphenous vein passes to the femoral vein in deep fascia of thigh

Question 15

talocrural (talotibial) injury will affect what movement?

Answer 15

dorsi and plantar flexion

Question 16

piriformis origin, passage, and insertion

Answer 16

sacrum through greater sciatic notch, and into greater trochanter
the KEY to gluteal anatomy
sciatic passes underneath

Question 17

nerve and muscles for plantar flexion

Answer 17

tibial nerve, posterior compartment

Question 18

unhappy triad

Answer 18

acl, mcl, medial meniscus

Question 19

what is often injured with the mcl

Answer 19

medial meniscus

they are attached!

Question 20

what innervates posterior compartment skin and lateral side of foot skin?

Answer 20

lateral sural nerve

Question 21

plantar ligaments of foot do…

Answer 21

maintain longitudinal arch - attach calcneous to cuboid

Question 22

what artery supplies head and neck of femur

Answer 22

medial circumflex femoral artery

Question 23

medial compartment of thigh (adductors) are innervated by

Answer 23

obturator nerve

Question 24

injury to obturator nerve can cause

Answer 24

difficulty walking and weakened adduction

Question 25

sciatic nerve branches into

Answer 25

common fibular and tiial nerves