Face And Neck Flashcards
What is the defining feature of a Le Fort fracture
Fracture through the pterygoid plates leading to pterygomaxillary separation
Where does Le Fort type 1 extend
Lateral margin of nasal opening
Maxillary sinus
Upper alveolar ridge
How does Le Fort type 1 present
Ecchymosis over greater palatine vessels
Teeth mobility
Cracked pot sound on percussing upper teeth
Airway obstruction
Why do you get airway obstruction in Le Fort type 1
Medial pterygoid muscles pull the jaw back and down
Describe the fracture of Le Fort type 2
Lacrimal bones
Inferior orbital floor and rim
Maxillary sinus
How would a Le Fort type 2 present
Step deforming at infra-orbital margin Mobile midface Cheek parasthesia (infraorbital nerve)
Describe the fracture of Le Fort type 3
Nasal bone
Frontal process of maxilla
Medial, floor and lateral wall of orbit
Zygomatic arch
How does a Le Fort type 3 present
Profuse CSF rhinorrhoea (ethmoid air cells very thin)
Lengthened face
Enophthalmus
Temporalis muscle impingement
What are some signs common to all types of Le Fort
Epistaxis Gross oedema Circumorbital ecchymosis Diplopia Subconjunctival haemorrhage
What is the source of bleeding in Le Fort type 2 and 3
Maxillary
What is the prehospital management of facial fractures
Airway intubation Insert epistats Dental bite blocks Collar Inflate epistats
What do the posterior and anterior balloons of the epistats compress
Posterior - sphenopalatine
Anterior - Keisselbachs
Why is a wound to the external jugular vein help open and what are the consequences
Tightly adhered to thick fascia
Means air can enter
Fractures through the sphenoid sinuses can cause what
Torrential epistaxis from the ICA draining through the sinus then nasal cavity
Monocular blindness due to optic nerve ischaemia (ophthalmic artery is first branch of ICA)
What nerve is damaged and hence what is the consequence of a zygomatic arch fracture
Infraorbital nerve
Impaired sensation to cheek, nasal vestibule and upper lip