Rad 2 Week 5 Quiz

Front 1

What is the cause of an Iliac Wing fx?

Back 1

Caused by a direct force trauma from the lateral direction, causing splitting of the wing.

Front 2

What is the AKA (also known as) for a Iliac Wing Fx?

Back 2

Duverney's Fx

Front 3

Is an Iliac Wing fx stable or unstable...and why?

Back 3

It is stable, because the large mucles around it prevent separation of the fx fragments.

Front 4

Iliac Wing Fx are more common with what bone condition?

Back 4

Osteoporosis

Front 5

What age group is most susceptible to Iliac Wing fx?

Back 5

The elderly

Front 6

What is the name of the most common fx of the pelvis?

Back 6

Malgaigne's Fx

Front 7

Malgaigne's fx displays what radiographic findings?

Back 7

There is an ipsilateral double vertical fx of the superior pubic ramus and the ischiopubic ramus, with a fx or dislocation of the SI joint.

Fx of L5 TP is sometimes present.

Front 8

What forces cause a malgaine's fx?

Back 8

Vertical shearing forces to the pelvis

Front 9

What are possible complications of a Malgaigne's fx?

Back 9

Rupture of the diaphragm and bowel.

Front 10

Is a Malgaine's fx unstable or stable?

Back 10

Unstable, and associated with high morbidity and mortality rate.

Front 11

Describe a Bucket-Handle Fx

Back 11

Fx of the superior public ramus and ischiopubic junction on the side opposite the oblique force that caused the fx. Also with fx or dislocation of SI joint on side of impact.

Front 12

In a Bucket-Handle Fx how do the bones displace?

Back 12

inward and superior displacement of the pubic component of fx

Front 13

What types of traumatic events are associated with Bucket-Handle fx's?

Back 13

Auto or pedestrian accidents. Associated with head injuries, thorax, and abdominal viscera.

Front 14

20% of all pelvic fx's involve what part of the pelvis?

Back 14

The acetabulum

Front 15

If a pelvic fx is determined, what other area of the pelvis is important to check?

Back 15

The acetabulum

Front 16

Acetabular fx's are a result of indirect injury. To what other structures are injuries to the acetabulum a result?

Back 16

Injuries to the foot, knee, and greater trochanter

Front 17

What are the four types of acetabular fx's?

Back 17

1. Post rim fx (dashboard fx)
2. Simple post column fx
3. Central acetabular fx (explosion fx)
4. Simple ant column fx

Front 18

Acetabular Fx
What type of acetabular fx is a result of a blow to the knee, w/ leg in FADD, often with posterior dislocation of the hip and is associated with 1/3 of acetabular fx's?

Back 18

Posterior Rim Fx (Dashboard Fx's)

Front 19

Acetabular Fx
What is an uncommon fx of the acetabulum, which results in (AP) illioischial line displaced medially and separated from teardrop?

Back 19

Simple Posterior Column Fx

Front 20

Acetabular Fx
What is the most common acetabular fx?

Back 20

The Central Acetabular Fx (Explosion Fx)

Front 21

What type of pelvic fx typically involves a tuberosity or bony process?

Back 21

Avulsion fx of the ilium

Front 22

What part of the ilium is involved in Avulsion of the Ilium fx's?

Back 22

the apophysis or epiphysis

Front 23

Who are more predisposed to avulsion fx's of the ilium?

Back 23

Adolescents and athletes

Front 24

Avulsion fx's of the ilium are similar to what other known avulsion fx of the tibia?

Back 24

Osgood Schlauters

Front 25

An ASIS avulsion fx is caused by what muscle?

Back 25

The Sartorius

Front 26

An AIIS Avulsion fx is caused by the pulling of what muscle?

Back 26

The Rectus Femoris

Front 27

What types of people commonly get AIIS avulsion fx's?

Back 27

Athletes: Rugby, soccer, football, track (sprinters)

Front 28

Osteochondroma is a ddx for what types of fx after the fx has healed?

Back 28

ASIS fx and AIIS fx

Front 29

What is a comminuted fx of the pubic arches called?

Back 29

A Straddle (or Saddle) Fx

Front 30

What is the mechanism of injury for a Straddle fx?

Back 30

A direct blow to the pubic symphisis

Front 31

What is the most common unstable injury of the pelvis?

Back 31

A straddle fx

Front 32

A straddle fx displays what findings on radiograph?

Back 32

Bilateral vertical fx of the superior pubic rami and ischiopubic junctions

Front 33

What type of fx causes a central fx fragment that displaces posterior and superior, resulting in pressure on the ventral surface of the bladder?

Back 33

A straddle fx

Front 34

What internal organ and associated parts are damaged in a Straddle Fx?

Back 34

A ruptured bladder and urethral tear occurs in 20% of patients

Front 35

If a patient had a bladder rupture and urethral tear, what imaging methods best enable the doctor to identify it?

Back 35

Urethrography and cystography

Front 36

A symphysis pubis avulsion is caused by what muscles?

Back 36

The adductor muscles

Front 37

In a symphysis pubis avulsion, bone is torn from what part of the pubis?

Back 37

From the superior or inferior pubic ramus

Front 38

What is the differential diagnosis for a symphysis pubis avulsion fx?

Back 38

osteitis pubis

Front 39

What is the named avulsion fracture of the ischial tuberosity by the hamstrings or apophysitis?

Back 39

Rider's Bone

Front 40

In Rider's Bone, how does it frequently heal?

Back 40

Healing involves an unexplained overgrowth of the avulsed apophysis often leaving a wide gap.

Front 41

What is the name of the avulsion fracture associated with chronic repetitive stress seen in horseback riders?

Back 41

Rider's bone

Front 42

Osteochondroma is a differential diagnosis for what bone fx's?

Back 42

Rider's bone, ASIS avulsion fx, AIIS avulsion fx

Front 43

What is the aka for "Sprung Pelvis?"

Back 43

Open Book Pelvis

Front 44

What is the name of the severe injury of the pelvis where there is a separation of the pubic symphysis and one or both of the SI joints?

Back 44

Sprung Pelvis (aka, Open Book Pelvis)

Front 45

Sprung Pelvis can result in severe damage to what viscera?

Back 45

Rupture of the urethra

Front 46

What injury represents a shearing separation of the pubic symphysis?

Back 46

Pubic Diastasis

Front 47

True or false...there is a bilateral dislocation of the SI joints in Pubic Diastasis?

Back 47

False. There is a unilateral dislocation.

Front 48

What is the normal distance between the normal pubic symphysis in non pregnant females?

Back 48

8mm

Front 49

What is the normal distance between the normal pubic symphysis in children?

Back 49

10mm

Front 50

What are the associated soft tissue injuries in pelvic fx's? Name as many as you can.

Back 50

Vascular injuries: intrapelvic hemorrhage due to laceration of large blood vessels.

Ecchymosis (hemorrhage or bruise under skin) of scrotum, labia, inguinal area and buttock

Bladder and urethral injuries

Bowel injuries

Diaphragm injuries