Module 2 - Flaps & Grafts

Flaps & Grafts



Question 1 - The difference between a skin graft and skin flap is:

There is no difference
Blood supply
Nerve supply
Epidermal involvement

Question 2 - What are the stages of the graft “take”?

Imbitition, inosculation, neovascular ingrowth
Inosculation, imbitition, neovascular ingrowth
Hemostasis, inflammatory phase, proliferative phase, maturation
Imbition, neovascular ingrowth, inosculation

Question 3 - Which of the following is NOT a local flap?

Transpositional
Rotational
Advancement
Pedicle

Question 4 - A 45-year-old woman undergoes a deep inferior epigastric perforator (DIEP) flap procedure for reconstruction of her right breast after a masectomy for breast cancer. Which of the following is an indication of poor flap health?

Warm to touch and pink in colour
Moderate Doppler strength and increased signal when flap is compressed
Rapid capillary refill
Slow bleeding on needle puncture

Question 5 - Which of the following statements is CORRECT regarding split thickness skin grafts?

They require subsequent closure of the donor site
They have less primary contraction but more secondary contraction compared to FTSG
They have more primary contraction but less secondary contraction compared to FTSG
They are often used to cover facial deficits due to their favorable cosmetic result

Question 6 - The features of a split thickness skin graft include all of the following except:

The graft includes the epidermal layer as well as a portion of the dermis of variable thickness
The graft donor site heals via reepithelialization from the edges of the wound as well as from the epithelium-lined dermal appendages (ie. Hair follicles) that are remaining in the base of the wound
The graft donor site cannot heal via reepithelialization, but rather must be closed by primary intention or be grafted using a split-thicknes skin graft
A thinner split thickness graft is more successful to take than a thicker graft because less vascular ingrowth is required to maintain viability of the graft
The secondary contraction that occurs during the healing phase is greater in a graft that contains a lesser thickness of dermis

Question 7 - Which of the following is NOT a cause of graft loss

Hematoma and/or seroma under the graft
Poorly vascularized recipient site
Plasmatic imbibition
Shearing forces between graft and recipient site
Infection/colonization

Question 8 - The difference between a split-thickness graft (STSG) and a full-thickness skin graft is:

A FTSG covers more surface area than a STSG
A FTSG has its own blood supply whereas a STSG does not
A STSG contains epidermis and part of the dermis whereas a FTSG contains epidermis and all of the dermis

Question 9 - The definition of an allograft is:

Graft from one place to another on same individual
Graft from one individual to another of same species
Graft from one individual to another of a different species
Artificial graft

Question 10 - The difference between a free flap and a graft is:

A free flap has veins and arteries intact
A graft has veins and arteries intact
A graft may consist of bone, but a flap consists only of soft connective tissues
A flap may consist of bone, but a graft consists only of soft connective tissues

Question 11 - Which of the following regarding split-thickness versus full-thickness skin grafts is FALSE?

STSG has the advantage of more sites
There is lower rate of survival with FTSG
There is greater secondary contraction with FTSG
The aesthetic result of STSG is usually poor