Facial trauma Flashcards

1
Q

what veins drain to the cavernous sinus and so contribute to the danger triangle

A

supratrochlear and supraorbital

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2
Q

what nerve travels through the mental foramen

A

inferior alveolar nerve from V3

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3
Q

what does a fracture of the maxilla or zygoma cause

A

lateral wall of nose or lower eyelid numbness

due to damage to the infraorbital nerve V2

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4
Q

what is erb’s point

A

found along the anterior border of stenocleidomastoid

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5
Q

how can we anaesthetise large areas of the face

A

nerve blocks with local anaesthetics (look for foramen)

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6
Q

why is cranial nerve 7 more superficial in children

A

due to development of the mastoid and styloid

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7
Q

where is the buccal branch of cn 7 found

A

parotid duct

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8
Q

what facial muscle is most succeptible to injury

A

depressor anguli oris

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9
Q

what layer is the neurovascular bundle of the scalp found in

A

connective tissue (subcutaneous)

can bleed out

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10
Q

what should you do in an injury to the ear or nose

A

skin is tightly bound to underlying cartilage

you should make sure that cartilage is not left exposed

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11
Q

what cartilage would you use to reconstruct the ear

A

costal

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12
Q

what is a laceration

A

an injury caused by a blow or crushing force

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13
Q

what should you do when identifying a dental injury

A

look for loose teeth which could be aspirated to right lung

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14
Q

describe fractures to the mandible

A

usually bilateral

commonly sub condylar, or angle, body or parasymphysis

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15
Q

what might be the effect of a zygoma fracture or orbit fracture

A

numbness in upper lip and cheek

epistaxis

periorbital haematoma
zygomatic arch can fracture

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16
Q

why might a patient not be able to open the jaw in a zygomatic arch fracture

A

coronoid process is below it so can’t open jaw

17
Q

what is an orbital blow out fracture

A

bone fractures at teh back of the orbit

intraorbital pressure increases

18
Q

what is the effect of a nasoethmoidal fracture

A

nasal bulb lost

pig snout deformity