Lecture 18: Hip and Thigh

Question 1

Median nerve wasting causes what?
Ulnar nerve wasting causes what?

Answer 1

Median nerve = thenar wasting
Ulnar nerve = hypothenar wasting

Question 2

Radial nerve wasting causes what?

Answer 2

Constant flexion of the wrist (dad getting snacks hand)

Question 3

The __________ ______ ________ splits into the _______ and __________ iliac artery at the pelvis.

Answer 3

Common iliac artery, external, internal

Question 4

The external iliac artery turns into the __________ artery, with the ______ artery resting against the femur.

Answer 4

Femoral, deep

Question 5

Where is the popliteal artery located?

Answer 5

Behind the knee

Question 6

The anterior tibial artery turns into what? The posterior tibial artery?

Answer 6

Anterior = dorsal pedal artery
Posterior = medial plantar artery

Question 7

The lumbosacral plexus goes from _____-_______.

Answer 7

L1, S4

Question 8

The femoral nerve is responsible for __________ of the ________. Located at which spinal levels? Extensors of the lumbosacral nerves are located at the ________.

Answer 8

Extension, knee. L2-L4, front.

Question 9

The obturator nerve is responsible for _________ of the _______. What spinal levels?

Answer 9

Adduction, hip. L2-L4

Question 10

The sciatic nerve contains the _________ and ______ nerves, located where?

Answer 10

Tibial, fibular. L4-S3.

Question 11

The tibial nerve is responsible for which three functions? Where is it located/

Answer 11

Knee, plantar, intrinsic foot flexion. L4-S3.

Question 12

The fibular nerve has which three functions? Where is it located.

Answer 12

Dorsiflexors, extensors/everters of the foot. L4-S2.

Question 13

What are the 2 extensors of the lumbosacral plexus? 3 flexors?

Answer 13

Extensors = femoral, fibular.
Flexors = obturator, sciatic, tibial nerve.

Question 14

Which three bones fuse together to form the os coxae? What is the fusion called?

Answer 14

Ischium, pubis, ilium @ acetabulum

Question 15

What are the three joints of the pelvis?

Answer 15

Sacroiliac, pubic symphysis, hip

Question 16

The sacroiliac connects the ________ and ______. It is a _________, synovial joint. It is relatively immobile due to strong ___________.

Answer 16

Sacrum, ilium, bilateral, ligaments.

Question 17

Which two ligaments of the sacroiliac joint form openings for peripheral nerves. What are there two openings called?

Answer 17

Sacrospinous lig, sacrotuberous lig. Openings: greater & lesser sciatic foramens.

Question 18

The _______ nerve is inferior to the piriformis and innervates the _________.

Answer 18

Sciatic, hamstrings.

Question 19

The superior gluteal nerve is _______ to the piriformis. What two muscles does it supply?

Answer 19

Superior. Gluteus medius/minimum, tensor fascia latae.

Question 20

The inferior gluteal nerve is ________ to the piriformis and supplies what?

Answer 20

Inferior, gluteus maximus.

Question 21

The pubic symphysis is a ________ joint. It contains ________ cartilage on the edge of bones and a _________ disc in between. Is it mobile?

Answer 21

Cartilaginous, hyaline, fibrocartilage. No, relatively immobile.

Question 22

Which three ligaments exist on the hip joint?

Answer 22

Iliofemoral, pubofemoral, ischiofemoral

Question 23

What are the five main muscle groups that affect movement?

Answer 23

Flexors, extensors, abductors, adductors, deep rotators.

Question 24

What are the two pelvic flexors? What are their nerves and functions?

Answer 24

Iliopsoas = femoral N, primary hip flexor.
Quadratus lumborum = 12th thoracic N, pelvis stabilization during walking.

Question 25

Gluteus maximus is supplied by the _______ gluteal N, responsible for which 2 functions?

Answer 25

Inferior. Hip extension, lateral rotation.

Question 26

Gluteus medius/minimus is supplied by the _____ gluteal N. Which three functions?

Answer 26

Inferior. Hip abduction, internal rotation, pelvic stabilization.

Question 27

The tensor fascia latae is supplied by the ________ gluteal N. It _____ and _______ the hip and tenses what?

Answer 27

Superior, abducts, flexes, fascia lata (IT band)

Question 28

During walking, quadratus lumborum does what? Gluteus medius does what?

Answer 28

QL = contraction upwards of unplanted leg.
GM = contraction downwards on planted leg.

Question 29

What are the four deep rotators? What is their main function?

Answer 29

Piriformis, gemelli, obturator internus, quadratus femoris. Function = lateral rotation of hips.

Question 30

In terms of thigh compartments…
anterior = _______ N
medial = _________ N
posterior = ___________ N

Answer 30

Femoral, obturator, sciatic.