Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Plastic Surgery( Grabb)Ali jasim > Mandibular reconstruction > Flashcards

Mandibular reconstruction Flashcards

1
Q

Rigid fixation of bone grafts, both vascularized and nonvascularized, is essential for optimum healing and integration

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Delay reconstruction until the soft tissue has had adequate time to heal in post traumatic mandibular reconstruction

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

postoncoiogic reconstruction must
be cognizant of the likely need for radiation, and thus vascularized bone is essential to maintain the support of the soft
tissue and viability of bone

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

in cases of massive tissue loss or resection use multiple free flaps to attain the necessary volume of healthy tissue

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The function of the mandible?

A

essential to mastication and maintenance of a patent airway, as well as an
essential component of the aesthetic balance and appearance of the
lower third of the face

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Regardless of the nature of the injury, the approach for treating
traumatic injuries of the mandible remains the same

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Fractures should
be stabilized acutely

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

In delayed fashion of reconstruction, the fixation of the mandible can be delayed T F

A

F defect-spanning reconstruction plate for load-bearing fixation
for early mobilization and prevention of ankylosis of the temporomandibular joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

patients will also require a temporary tracheostomy to maintain an established airway postoperatively during the
acute phase of edema,

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

the most complex patients undergoing bony reconstruction
of the mandible are those who suffer from Traumatic mandibular fracture

A

F the most complex patients undergoing bony reconstruction
of the mandible are those who suffer from osteoradionecrosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Osteoradionecrosis patients will often require a soft tissue free
flap in addition to vascularized bone to achieve a proper result

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Resection of the diseased bone should be planned extend at least 1 cm beyond the edges of the
lesion to assure the presence of healthy bone stock at the margins

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

nonvascularized bone grafts. INDICATIONS

A

not suffered devastating
traumatic soft tissue injury, have not undergone prior radiation treatment for malignancy, or who will not undergo postoperative radiation treatment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

There are numerous reports of the successful use of nonvascularized grafts for mandibular defects greater than 6 cm

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

ideal donor for intact corticocancellous grafts that immediately provide inherent structural
support for the reconstruction

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

purely cancellous or particulate corticocancellous grafts that, while offering no immediate
structure, are able to be manipulated and molded to provide ideal
aesthetic reconstructive outcomes

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

rib grafts, fibular grafts, tibial grafts, and split
calvarial grafts. These sites are used less frequently than the ilium but
offer adequate alternatives should the need aris

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The deep circumflex iliac artery (DCIA) flap offers vascularized iliac
crest bone stock of moderate length (though up to 16 cm

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The deep circumflex iliac artery more suited for lateral segmental defects of mandible

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The deep circumflex iliac artery flap can harvested along with a segment of internal oblique muscle based
off of a perforating vessel from the main pedicle that can be used
for intraoral lining

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

The bone stock can provide good
matching height to the native mandible in DCIA

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

The down side of this flap

A

short pedicle that may require the use of vein grafts
inability to effectively perform segmental osteotomies
general lack of available bony length.
donor site morbidity can
include an increased risk of abdominal wall hernias, persistent pain,
gait disturbances, and sensory alteration.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

it can be useful for moderate length lateral segmental traumatic defects that also require soft tissue coverage

A

T

24
Q

the DCIA offers similar outcomes when compared to the fibula flap with regard to appearance, speech, and oral
continence

A

T

25
Q

Scapula Free Flap based on the circumflex scapular (lateral border of the scapula) or angular (scapular tip) arteries from the subscapular system

A

T

26
Q

the length of scapular flap

A

flap offers
a segment of bone ofmoderate length-up to 13 cm long at the upper
end of its range-though only 1 to 2 cm wide

27
Q

The scapular tip has been shown to be useful in the
reconstruction of short-segment defects and isolated angular defects

A

t

28
Q

lateral border provides more length in cases of longer
defects of the body

A

T

29
Q

disadvantages

A

Intraoperative logistics can sometimes be difficult due to the required
lateral positioning
prevent a simultaneous
two-surgeon approach to the case

30
Q

scapula
flap vary, more favorable relative to the free fibula flap with regard to donor site healing,

A

T

31
Q

can
cause some degree of long-term shoulder dysfunction

A

T

32
Q

Fibula Free Flap
the standard for vascularized bony reconstruction of
critical defects of the mandible

A

T

33
Q

primary choice for
almost all cases including traumatic and primary ablative defects, as
well as for reconstruction of osteoradionecrosis

A

T

34
Q

Its length

A

up to 26 cm

35
Q

capable of recreating
any segment of the mandible, including defects of the condyle, body,
or anterior segment

A

t

36
Q

up to 100% flap survival

A

t

37
Q

patients can experience a slightly altered gait, or reduced ability
to participate in strenuous physical activity.

A

T

38
Q

patients experience significant postoperative complications

A

F most patients
do not experience significant postoperative complications

39
Q

During manipulation of the fibular bone we reconstruct straight segments and curved segments

A

each segment must maintain at least 2 cm in length

40
Q

it is often necessary to achieve a watertight
intraoral closure, which is essential to prevent salivary leakage onto
the vascular pedicle

A

T

41
Q

flaps of up to 10 cm wide and traversing
the entire length of the bone flap can be harvested

A

F flaps of up to 5 cm wide and traversing
the entire length of the bone flap can be harvested

42
Q

if the patient requires a very large volume of
soft tissue, or both intraoral and external coverage, the distal end of
the peroneal pedicle can provide excellent flow through vessels for
transferring a second fasciocutaneous free flap in series

A

T

43
Q

The fibula
provides excellent bone stock for the use of osseointegrated implants and subsequent design and placement of a dental prosthesis

A

T

44
Q

fibula provides the opportunity for condyle reconstruction, a relative
limitation of the other vascularized bone options

A

T

45
Q

most children with congenital mandibular issues do not
require intervention in early infancy

A

T

46
Q

patients with absence of the vertical ramus, condyle, and
temporomandibular joint may require costochondral grafting at which age?

A

typically between 3 and 6 years ofage

47
Q

The major goals of reconstruction in these patients should be
alignment of the maxillary and mandibular dental midlines with the
midsagittal plane,

A

T

48
Q

though costochondral grafts
can have excellent growth with time, occasionally additional length is
still necessary as the child grows

A

T

49
Q

low-energy blunt trauma, som time need soft tissue reconstraction

A

these injuries do not include soft tissue loss,
comminution, periosteal stripping, or devascularization of bony fragments

50
Q

any defect greater than 6 cm and any patient who has been radiated or
will be radiated should be considered a prime candidate for vascularized bone reconstruction.

A

T

51
Q

the DCIA flap is
employed less frequently for purposes of mandibular reconstruction.
However, it can be useful for moderate length lateral segmental traumatic defects that also require soft tissue coverage, or similar defects
that occur in a radiated field

A

T

52
Q

the lateral border of the free scapula bone flap an excellent option in revision procedures

A

T

53
Q

the scapula flap does present a viable option for successful restoration of mandibular form and function, including
osseointegrated implant-based dental prostheses

A

T

54
Q

the bone stock is
usually dependent on the robust periosteal circulation, as this allows
for multiple segmental wedge osteotomies for incredibly versatile
shaping and manipulation in fibula flap

A

T

55
Q

each segment must maintain at least 2 cm in length

A

T

56
Q

Soft tissue flaps of up to 5 cm wide and traversing
the entire length of the bone flap can be harvested based on these
perforators and still closed primarily

A

T

57
Q

A free fibula flap IS not necessary
in this patient with a 2-cm segmental defect.

A

T

Plastic Surgery( Grabb)Ali jasim (92 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions