Emil Zuckerkandl
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Transcript of Emil Zuckerkandl
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Sharp and chronic odontogenic sinusitis of upperjawal sinus. Arthritis and arthrosis of tympano-maxillar joint. Sharp and chronic syaloadenitis.
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Emil Zuckerkandl
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OutlineDefinitionsBackground and incidenceAnatomy and embryologyPatient evaluationFESS Concepts of SurgeryControversy in Sinus SurgeryConclusion
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Sharp and chronic odontogenic sinusitis of maxillary sinus. Arthritis and arthrosis of tympano-maxillar joint.
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IncidenceEstimated at 14% of American population$1.77 billion per year spent on rhinosinusitisCRS ranks fifth compared to all diseases in
frequency of antibiotic use associated with treatment.
CRS affects 32 million ppl/yrAccounts for 11.6 million visits to physicians'
offices.
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DefinitionsRhinosinusitis - broadly defined as an
inflammation and/or infection involving the nasal mucosa and at least one of the adjacent sinus cavities
Acute rhinosinusitis (AS) – the persistence and worsening of upper respiratory symptoms for greater than a 7-day course but lasts less than 4 weeks.
Subacute rhinosinusitis (SAS) - is defined as nasal symptoms lasting 4 weeks to 12 weeks
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DefinitionsChronic Rhinosinusitis (CRS) – persistence
mucosal inflammation for > 12 consecutive weeks despite medical therapy or occurrence of more than four episodes of symptoms a year with persistent radiographic changes
Chronic Recurrent Rhinosinusitis (CRRS) - consists of multiple acute episodes with complete resolution of disease between episodes
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EmbryologyTwo processes:
Embryo head develops into a structure with two distinct nasal cavities
Lateral nasal walls invaginate to create complex folds known as turbinates
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EmbryologyDevelopment of sinuses – 6-8 weeks of
gestation
6th week – Simple lateral nasal wall7th week – Three axial furrows form, give rise to
turbinates10th week - Dev of maxillary sinus (invagination
of the middle meatus) and uncinate process & the bulla ethmoidalis form a narrow groove known as the hiatus semilunaris
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Embryology14th week - the anterior ethmoidal cells
appear as several invaginations from the upper middle meatus and the posterior ethmoidal cells from the floor of the superior meatus.
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Embryology
56th day
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Embryology
60th Day
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Embryology
63 days
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Ethmoid anatomy is complex: LabyrinthLamellae
1st - Uncinate2nd - Ethmoid bulla3rd - Basal lamella of
middle turbinate4th - Superior turbinate
Ethmoid anatomy
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DrainageFrontal, anterior
ethmoid & maxillary – OMC
Posterior Ethmoids – Superior meatus
Sphenoid sinus – Sphenoid-ethmoidal recess
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Middle TurbinateThree components
First – Anterior, oriented in a sagittal plane and attached to skull base
Second – Middle, oriented in a frontal plane and attached to lamina papyracea (AKA basal lamella and separates ant from post ethmoids)
Third – Posterior, oriented in a horizontal plane and attaches to perpendicular plate of palate (forms roof of middle meatus, anterior to sphenopalatine foramen)
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Middle Turbinate
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Ostiomeatal Complex (OMC)AKA – Anterior Ethmoid Middle Meatus
ComplexCommon drainage for frontal, maxillary and
anterior ethmoid sinuses.
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OMC
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OMCInfundibulum – funnel shaped area whereby
the maxillary, ant ethmoid and frontal sinuses drains
Uncinate process– Sickle shaped bony ethmoidal structure
Hiatus Semilunaris – Half-moon shape opening of infundibulum
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Uncinate ProcessAttaches to the
following structures:1. Inf & far post. – To
ethmoid process of inf. Turb
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Uncinate Process2. Ant & far sup. – To
lamina papyracea, skull base or mid turb
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3. Laterally – Lamina papyracea and fontanelle area
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Uncinate Process
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Bulla EthmoidalisAnterior ethmoid air
cells attached to lamina papyrcea and usually open into lateral sinus
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Sinus Lateralis = Suprabullar recess and retrobullar recess
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SBR
RBR
Sinus Lateralis
Middle turbinate: Horizontal and vertical basal lamella
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*
*
SBR and RBR
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Sphenoid OstiumMedial to posterior sup. turbinateLocated between nasal septum and inferior
aspect of sup. turbinate Located at the same level as the roof of the
maxillary sinusLocated 4 microdebrider/suction tip breaths
above the choanaeLocated 7cm from nasal crest at 30°
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Sphenoid Ostium
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Sphenoid Sinus Relationships of important structures:
Optic nerve – superior-lateralCarotid artery/cav sinus – mid-lateralVidian nerve and maxillary nerve – inferior-
lateral
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Square – ant clinoid process, Circles – optic canals, triangle – vidian nerveAsterisk – pneumatization of pterygoid process
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Sphenoid Classification
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Onodi Cells or Sphenoethmoid cells
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Optic Canal in Onodi Cells
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Keros classificationCribriform plate
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Keros ClassificationType I
1-3mmType II
3-7mmType III
7-16mm
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Frontal Cells
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Frontal RecessAnatomic Boundries:
Ant – unicate process & agger nasiPost – bulla ethmoidalisand suprabullar lamellaLateral – lamina papyraceaMedially – hiatus semilunaris or middle turbInf – Ethmoid infundibulumSup – Fovea ethmoidalis, supraorbital air cell, anterior
ethmoid artery and frontal ostium
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Frontal Sinus
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Patient evaluationInclude in history:
Detailed CCAllergy, asthma, asa sensitivity and polypsFor patients with CRS
Facial pain, congestion, nasal obstruction, drainage and hyposmia
Complete pmhx and pshx to identify co-morbidities
A review of the medical care a patient has received prior to evaluation is also important.
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Patient evaluationComplete head and neck exam to include:
basic ocular examination Visual fields, extraocular eye movement
anterior rhinoscopy Evaluate septal deviations, character of mucosa,
presence of polypsnasal endoscopy (typically 30°)
Floor, nasopharynx, middle meatus, sphenoethmoidal recess,
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AntrostomySome speculate nitric oxide produced in
maxillary sinus has bacteriostatic properties, therefore better to keep antrostomy small
Uncinate must be completely removed, source of recurrence.
Mucociliary clearance remains t/o natural osAntrostomy must include the natural osium
and accessory osium if present
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Recirculation
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Extended Maxillary AntrostomyAdvocated by some (R. Casiano) in refractory
maxillary diseaseMiddle meatal sinusotomy opened widely
anteriorly (up to NLD), posteriorly to post wall of max sinus, superiorly to roof of max sinus and inferiorly to inferior turbinate.
Inferior maxillary antrostomy performed inferiorly into the inferior meatus, post to Hasner’s valve (lacrimal punctum).
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Extended Maxillary Antrostomy
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Extended Maxillary Antrostomy
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Frontal SinusotomyQuestion on to perform or notDo as little as possible but as much as
necessarySome advocate ethmoid dissection and monitor
Graduated approach to frontal sinuses
Should evaluate need with sagittal reconsEvaluate A-P and Mediolateral dimensions,
asses neo-osteogenesis and pneumatization