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Terms in this set (37)
What is the aetiology of Orbito-zygomatic fractures?
What is the occurrence of orbito-zygomatic fractures linked to?
What fracture of patients have alcohol in their system at the time of injury?
What are the other names for orbito-zygomatic fractures?
Where are the natural points of weakness in the ZOC?
Which nerves pass through the superior orbital fissure?
CN III, IV, V, VI
Which ligaments, lateral to the eyeball, must be reconnected following trauma or eye problems may develop?
Medial and Lateral canthal ligaments
Which branches of CN VII may be damaged in a ZOC fracture?
What is the term to describe watery eyes?
What causes epiphoria?
Congestion of the nasolacrimal canal
Which sensory nerve is often damaged as it is located at a natural point of weakness near the superior orbital rim?
What are the symptoms of a ZOC?
Alteration in sensation
Pain on eye movement
What contributes to diplopia?
How many types of Henderson fracture are there?
Describe Henderson 1
Describe Henderson 2
Zygomatic arch #
Difficulties opening and closing
Describe Henderson 3
Numbness, visual disturbance, pain, asymmetry
Describe Henderson 4
Numbness, visual disturbance, pain, asymmetry, associated lacerations
Describe Henderson 5
Occular motility problems
Describe Henderson 6
Orbital rim #
Numbness, step deformity, visual disturbance
Describe Henderson 7
Numbness, visual disturbance, pain, asymmetry, assoc. lacerations, difficulty opening/closing
What is the term used to describe bruising around the eyes?
How does a subconjunctival haematoma develop?
Blood under the sclera - breach in the periosteum. Underlying #
What are the clinical signs of a ZOC fracture?
Swelling then flattening
Lacerations or excoriations
What radiographic views would assist in the localisation of a ZOC fracture?
CT scan for complex fractures or 'blow outs'
What should be examined in a patient with a suspected ZOC?
Visual acuity (eye movement, eye position, pupil reaction to light, diplopia)
Palpation (bone margins, sensation)
What can cause diplopia?
What test should be ordered to assess eye motility?
Which muscle is most likely trapped causing diplopia?
What is dystopia?
Orbital position is out - horizontal (one of the ligs) or vertical (one of the orbits)
When is treatment indicated in a ZOC?
Symptomatic (diplopia, assymmetry, numbness, enophthalmos)
Asymptomatic (defect on radiographs, high suspicion that enopthalmos may ensue)
What treatment options can be undertaken via closed reduction?
What approaches can be undertaken to repair ZOC #?
What is the post-op advice/treatment of a ZOC #?
Avoid nose blowing
Post-op steroids (Dexamethosone 4-8mg)
Eye obs overnight
What is a rare complication of the treatment of ZOC #?
What are the clinical signs of a retrobulbar haemorrhage?
Decreasing visual acuity
History of trauma
What is the immediate treatment of orbital compartment syndrome?
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