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OMSITE 2 > Reconstruction > Flashcards

Reconstruction Flashcards

1
Q 
The morbidity associated with the lateral approach to the anterior ilium is due to reflection of which muscle?
(A) Iliacus
(B) Gluteus medius
(C) Sartorius
(D) Tensor fascia lata
A

D

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2
Q

Which of the following is the most important determinant in survival of a local random pattern skin flap of the face?
(A) Width of the flap base
(B) Length of the flap
(C) Perfusion pressure of nutrient vessels to the flap
(D) Amount of reactive oxygen intermediates

A

C

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3
Q 
The Abbé-Estlander flap is supplied by which of the following arteries?
(A) Labial
(B) Transverse facial
(C) Angular
(D) Infraorbital
A

A

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4
Q

The best reconstruction for a patient with an oral cancer that requires a hemimandibulectomy and wide resection of soft tissue with planned post-operative radiation therapy is a:
(A) reconstruction plate.
(B) reconstruction plate with secondary reconstruction with nonvascularized bone graft.
(C) microvascular fibular flap with a soft tissue skin paddle.
(D) reconstruction plate with a pectoralis major flap.

A

C

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5
Q

In deciding when to place a nonvascularized bone graft to reconstruct the mandible, which of the following is correct?
(A) Size of the defect is not a factor in success
(B) Planned radiation therapy after grafting will not affect the outcome
(C) Defects >9 cm have a high rate of failure
(D) Defects <5 cm never need grafting

A

C

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6
Q

When placing implants into a fibular flap with soft tissue paddle, the surgeon should consider:
(A) thinning the soft tissue paddle.
(B) reducing the excessive bone height of the fibular.
(C) placing fat grafts to bulk up the soft tissues.
(D) electively tying the vascular pedicle.

A

A

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7
Q

Which one of the following statements is correct regarding the diagnosis, evaluation and autogenous grafting of maxillary defects for rehabilitation with dental implants?
(A) Harvesting of the autogenous graft should be performed before the exposure of the recipient site
(B) Intraoral ramus grafts are associated with more resorption when compared with iliac crest grafts
(C) The decision to perform bone grafting should be driven by the requirements of the prosthesis
(D) Bone quality is the main determinant factor when selecting extraoral vs intraoral donor sites

A

C

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8
Q 
In reconstructing a mandibular defect using rh-BMP, one must depend on the chemical process of:
(A) osteocompetence.
(B) osteoconduction.
(C) osteogenesis.
(D) osteoinduction.
A

D

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9
Q

A superiorly based platysma flap receives its dominant blood supply from which of the following vessels?
(A) Occipital artery
(B) Submental branch of the facial artery
(C) Transverse cervical artery
(D) Superior thyroid artery

A

B

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10
Q 
A 3 cm defect is left after removing a lesion of the lower lip. This type of defect is best managed by using a/an:
(A) direct primary three layer closure.
(B) Abbe-Estlander flap.
(C) anteriorly-based tongue flap.
(D) radial forearm free flap.
A

B

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11
Q

Which of the following statements is true regarding full thickness and split thickness skin grafts?
(A) A full thickness skin graft can be expected to contract approximately 80–90% of its initial size.
(B) Split thickness skin graft donor sites heal primarily by epithelial migration from adnexal structures.
(C) Survival of split thickness skin grafts beyond 72 hours is dependent upon plasmatic imbibition.
(D) Survival of a split thickness or full thickness graft in the initial 24–48 hours is dependent upon inosculation.

A

B

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12
Q

Which of the following is the most important determinant in survival of a local random pattern skin flap of the face?
(A) Width of the flap base
(B) Length of the flap
(C) Perfusion pressure of nutrient vessels to the flap
(D) Amount of reactive oxygen intermediates

A

C

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13
Q

Which of the following represents an advantage of using platelet rich plasma?
(A) Increased concentration of growth factors
(B) Increased clotting potential
(C) Decreased tissue viscosity
(D) Decreased immune responses

A

A

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14
Q

The best reconstruction for a patient with an oral cancer that requires a hemimandibulectomy and wide resection of soft tissue with planned post-operative radiation therapy is a:
(A) reconstruction plate.
(B) reconstruction plate with secondary reconstruction with nonvascularized bone graft.
(C) microvascular fibular flap with a soft tissue skin paddle.
(D) reconstruction plate with a pectoralis major flap.

A

C

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15
Q

In deciding when to place a nonvascularized bone graft to reconstruct the mandible, which of the following is correct?
(A) Size of the defect is not a factor in success
(B) Planned radiation therapy after grafting will not affect the outcome
(C) Defects >9 cm have a high rate of failure
(D) Defects <5 cm never need grafting

A

C

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16
Q

When placing implants into a fibular flap with soft tissue paddle, the surgeon should consider:
(A) thinning the soft tissue paddle.
(B) reducing the excessive bone height of the fibular.
(C) placing fat grafts to bulk up the soft tissues.
(D) electively tying the vascular pedicle.

A

A

17
Q 
Sixty percent of the lower lip is missing following tumor ablation. Frozen sections have verified tumor-free margins. Of the following choices, which is the best option for obtaining an adequate functional and esthetic result in reconstructing the lower lip?
(A) Pectoralis major flap
(B) Karapandzic flap
(C) Abbe-Estlander flap
(D) Deltopectoral flap
A

B

18
Q

Potential complications of sural nerve graft harvesting include:
(A) foot drop due to loss of eversion and dorsiflexion of the foot.
(B) numbness to the lateral aspect of the foot and ankle.
(C) damage to the saphenous nerve.
(D) damage to the medial malleolus of the tibia.

A

B

19
Q 
Bone morphogeneic proteins are members of which growth factor family?
(A) Interleukins
(B) Platelet-derived growth factor
(C) Colony-stimulating growth factor
(D) Transforming growth factor-beta
A

D

20
Q

Closure of a wound with multiple Z, W, or geometric plasties, rather than in a straight line, is advantageous primarily because the procedure:
(A) is easier to perform.
(B) is optically active.
(C) reduces subcutaneous fibrosis.
(D) lessens the chance of tissue necrosis.

A

B

OMSITE 2 (12 decks)

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