- •Dedication
- •Citation
- •Preface
- •Contents
- •1 Anatomy of the Craniofacial Region
- •1.1 Anterior Skull Base
- •1.1.1 Cribriform Plate/Crista Galli
- •1.1.2 Fossa Olfactoria
- •1.1.3 Roof of the Orbit
- •1.1.4 Dura
- •1.1.5 Arterial Supply: Skull Base/Dura
- •1.2 Paranasal Sinuses
- •1.2.1 Frontal Sinus
- •1.2.2 Ethmoid
- •1.2.3 Sphenoid
- •1.3 Midface Skeleton
- •1.4 Subcranial and Midface Skeleton
- •References
- •2 Radiology of Craniofacial Fractures
- •2.1 Conventional X-Rays
- •2.2 Computed Tomography
- •2.3 Magnetic Resonance Imaging (MRI)
- •2.4 Ultrasonography
- •2.5 Diagnostic Algorithm
- •2.5.1 General Considerations
- •2.5.2 Craniocerebral Trauma
- •2.5.2.1 The Initial CT After Trauma
- •2.5.3 Skull Base Fractures
- •2.5.4 Midface Fractures
- •References
- •3 Classification of Craniofacial Fractures
- •3.1 Frontobasal: Frontofacial Fractures
- •3.1.1.1 Type 1
- •3.1.1.2 Type 2
- •3.1.1.3 Type 3
- •3.1.1.4 Type 4
- •3.2 Midface Fractures
- •3.2.1 Standard Classifications
- •3.2.2 Central Midface Fractures
- •3.2.3 Centrolateral Midface Fractures
- •3.2.4 Skull Base and Fracture Levels in the Region of the Septum
- •3.2.5 Lateral Midface Fractures
- •3.2.6 Midface: Combined Fractures
- •3.2.8 Cranio-Frontal Fractures
- •3.3. Craniofacial Fractures
- •3.3.1 Skull Base-Related Classification
- •3.3.2 Subcranial Facial Fractures
- •3.3.3 Craniofacial Fractures
- •3.3.4 Central Cranio-Frontal Fractures
- •3.3.5 Lateral Cranio-Orbital Fractures
- •References
- •4 Mechanisms of Craniofacial Fractures
- •4.1 Fractures of the Skull Base
- •4.1.1 Burst Fractures
- •4.1.2 Bending Fractures
- •4.2 Frontofacial: Frontobasal Fractures
- •4.2.1 Fracture Mechanism
- •4.3 Midfacial: Frontobasal Fractures
- •4.3.1 Trauma Factors
- •4.3.2 Impact Forces and Vectors
- •4.3.3.1 Degrees of Absorption
- •4.3.4 Impact Surface
- •4.3.4.1 Small Impact Surface
- •4.3.4.2 Large Impact Surface
- •4.3.5 Position of the Skull
- •4.3.5.1 Proclination
- •4.3.5.2 Reclination
- •References
- •5.1 Epidemiology
- •5.2.1 Frequency
- •5.2.2 Localization
- •5.3 Midface: Skull Base Fractures
- •5.3.2 Dural Injuries
- •5.3.2.1 Frequency
- •5.3.2.2 Localization
- •5.4 Cranio-Fronto-Ethmoidal Fractures
- •5.4.1 Frontal Sinus: Midface Fractures
- •5.5 Distribution According to Age
- •5.6 Distribution According to Gender
- •5.7 Associated Injuries
- •5.7.2 Eye Injuries
- •5.7.3 Facial Soft-Tissue Injuries
- •5.8 Special Fractures and Complications
- •5.8.1 Penetrating Injuries
- •5.8.3 Complicating Effects
- •5.8.3.1 Nose: Nasal Septum – Nasolacrimal Duct
- •5.8.3.2 Orbit
- •5.8.3.3 Ethmoid
- •References
- •6 Craniofacial Fracture Symptoms
- •6.1.1.1 Liquorrhea
- •Fistulas
- •Multiplicity
- •Time of Manifestation
- •Clinical Evidence of Liquorrhea
- •Chemical Liquor Diagnostic
- •Glucose-Protein Test
- •Immunological Liquor Diagnostic
- •Beta-2 Transferrin Determination
- •Beta-Trace Protein
- •Liquor Marking Methods
- •6.1.1.2 Pneumatocephalus
- •6.1.1.3 Meningitis
- •6.1.2.1 Lesions of the Cranial Nerves
- •Olfactory Nerves
- •Oculomotor Nerve
- •Trochlear Nerve
- •Abducent Nerve
- •Optic Nerve
- •Loss of Vision in Midface Fractures
- •Location of Optic Nerve Lesions
- •Clinical Appearance
- •Primary CT Signs
- •Secondary CT Signs
- •Additional Injuries
- •Operating Indications/Decompression
- •Decompression of the Orbital Cavity
- •Decompression of the Optic Canal
- •Therapy/Prognosis
- •6.1.2.2 Injuries at the Cranio-Orbital Junction
- •Frequency
- •Superior Orbital Fissure Syndrome (SOFS)
- •The Complete SOFS
- •Incomplete SOFS
- •Hemorrhagic Compression Syndrome (HCS)
- •Orbital Apex Syndrome (OAS)
- •Clivus Syndrome
- •6.1.2.3 Vascular Injuries in Skull Base Trauma
- •Cavernous Sinus Syndrome
- •Thrombosis of the Superior Ophthalmic Vein
- •6.1.3.2 Hemorrhage in the Skull Base Region
- •Basal Mucosal Hemorrhage
- •Hemorrhage in Frontal Skull Base Fractures
- •6.3.1.1 Emphysema
- •Orbital Emphysema
- •6.2 Midface Injuries (Clinical Signs)
- •6.2.1 Central Midface Fractures without Abnormal Occlusion (NOE Fractures)
- •6.2.2 Central Midface Fractures with Abnormal Occlusion (Le Fort I and II)
- •6.2.4 Lateral Midface Fractures
- •6.3 Orbital Injuries
- •6.3.1 Orbital Soft-Tissue Injuries
- •6.3.1.1 Minor Eye Injury
- •6.3.1.2 Nonperforating Injury of the Globe
- •6.3.1.3 Perforating Injury of the Globe (2%)
- •6.3.2 Orbital Wall Fractures
- •6.3.2.1 Fracture Frequency
- •6.3.3 Fracture Localization
- •6.3.3.1 Orbital Floor Fractures
- •6.3.3.2 Medial Orbital Wall Fractures
- •6.3.3.4 Multiple Wall Fractures
- •6.3.4 Fracture Signs
- •6.3.4.1 Clinical Manifestations
- •6.3.4.2 Change in Globe Position
- •6.3.4.3 Enophthalmus
- •6.3.4.4 Exophthalmus
- •6.3.4.5 Vertical Displacement of the Globe
- •6.3.4.7 Retraction Syndrome
- •6.3.4.8 Disturbances of Eye Motility
- •References
- •7.1 Intracranial Injuries
- •7.2 Management of Skull Base and Dural Injury
- •7.2.1 Skullbase Fractures with CSF Leakage
- •7.2.2 Skullbase Fractures with CSF Leak without Severe TBI
- •7.2.3 Skullbase Fractures with CSF Leak with Severe TBI
- •7.2.4.1 Skullbase Fractures with Spontaneously Ceased CSF Leakage
- •References
- •8 Surgical Repair of Craniofacial Fractures
- •8.1 Indications for Surgery
- •8.1.2 Semi-Elective Surgery for Frontobasal and Midface Fractures
- •8.1.3 No Surgical Indication
- •8.2 Surgical Timing
- •8.2.1 Evaluation
- •8.2.1.1 Neurosurgical Aspects
- •8.2.1.2 Maxillofacial Surgical Aspects
- •8.2.2 Surgical Timing
- •8.2.2.3 Elective Primary Treatment
- •8.2.2.4 Delayed Primary Treatment
- •8.2.2.5 Secondary Treatment
- •8.3 Surgical Approaches
- •8.3.1 Strategy for Interdisciplinary Approach (Decision Criteria)
- •8.3.1.2 Approach Strategy: Transfacial-Frontoorbital or Transfrontal-Subcranial
- •8.4.1 Indications
- •8.4.2.1 Coronal Approach
- •8.4.2.2 Osteoplastic Craniotomy
- •8.4.2.3 Skull Base Exposition
- •Technical Aspects
- •Technical Aspects
- •8.5 Transfrontal-Subcranial Approach
- •8.5.1 Indications
- •8.5.2 Surgical Principle
- •8.5.3 Subcranial Surgical Technique
- •8.6 Transfacial Approach
- •8.6.1 Indications
- •8.6.2 Surgical Principle
- •8.6.4.1 Frontal Sinus
- •8.6.4.2 Ethmoid/Cribriform Plate
- •8.6.4.3 Sphenoid
- •8.7 Endonasal-Endoscopical Approach
- •8.7.2 Sphenoid Fractures
- •References
- •9.1 Principles of Dural Reconstruction
- •9.2 Dural Substitutes
- •9.2.1 Autogenous Grafts
- •9.2.2 Allogeneic Transplants
- •9.2.2.1 Lyophilized Dura
- •9.2.2.2 Collagenous Compounds
- •9.3 Principles of Skull Base Reconstruction
- •9.3.1 Debridement of the Ethmoid Cells
- •9.3.3 Skull Base Repair
- •9.3.3.1 Extradural Skull Base Repair
- •9.3.3.2 Intradural Skull Base Occlusion
- •9.4 Skull Base Treatment/Own Statistics
- •References
- •10 Bone Grafts
- •10.1 Indications
- •10.1.1 Midface
- •10.2 Autogenous Bone Grafts
- •10.2.1 Split Calvarial Grafts
- •10.2.2 Bone Dust/Bone Chips
- •10.2.3 Autogenous Grafts from the Iliac Crest
- •References
- •11 Osteosynthesis of Craniofacial Fractures
- •11.1 Biomechanics: Facial Skeleton
- •11.3 Osteosynthesis of the Midface
- •11.3.1 Plating Systems
- •11.3.2 Miniplates: Microplates
- •11.3.3 Screw Systems
- •11.4 Surgical Procedure: Osteosynthesis of the Midface
- •11.4.1 Different Plate Sizes: Indication
- •11.4.2 Fracture-Related Osteosynthesis
- •11.4.2.1 Surgical Approaches
- •11.4.2.2 Lateral Midface Fractures
- •11.4.2.4 Complex Midfacial Fractures
- •11.5.1 Mesh-Systems
- •11.5.2 Indications and Advantages
- •References
- •References
- •12.1 Craniofacial Fractures
- •12.1.1 Concept of Reconstruction
- •12.1.5 Own Procedure: Statistics
- •12.2 NOE Fractures
- •12.3.1 Concept of Reconstruction
- •12.4 Zygomatico-Orbito-Cranial Fractures
- •12.5 Craniofrontal Fractures (CCF)
- •12.5.1 Concept of Reconstruction
- •12.5.6 Fractures of the Frontal Sinus with Comminution of the Infundibulum
- •12.6 Own Statistics
- •13.1 Infections and Abscesses
- •13.2 Osteomyelitis
- •13.3 Recurrent Liquorrhea
- •13.4 Hematoma: Central Edema
- •13.5 Subdural Hygroma
- •13.6 Frontal Sinus: Complications
- •13.7 Functional Neurological Deficits
- •13.8 Meningitis
- •13.9 Facial Contour Irregularities
- •13.10 Conclusion
- •References
- •14.1.1 Autogenous Grafts
- •14.1.1.1 Split Calvarial Grafts
- •14.1.1.2 Cartilage Grafts
- •14.1.3.1 Synthetic Calcium Phosphates
- •14.1.3.2 Synthetic Polymers
- •14.1.4 Titanium-Mesh
- •References
- •15.1 Overall Objective
- •15.2 Patient-Related Conditions
- •15.2.1 Size and Location of the Defect
- •15.2.1.1 Examples
- •15.2.2 General Health Status
- •15.2.3 Neurological Status
- •15.2.4 Patient’s Wish
- •15.2.5 Treatment Plan
- •15.2.6 Technical Aspects
- •15.3 New Developments
- •15.3 1.1 The SLM process
- •15.3.2 PEEK-Implants
- •15.3.3 Outlook
- •References
- •Index
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5 Epidemiological Aspects of Craniofacial/Skull Base Fractures |
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Fig. 5.11 Burst trauma of the midface and the mandible after severe suicidal gun shot trauma from submental through midface. (a) Clinical situation after emergency intubation. (b) CT: extensive destruction of the central midface and loss of the lower central midface structures (arrow) including the palate
a
b
CMF may also lead to tearing off the medial or – less often – the lateral canthal ligaments. Reconstructing the osseous orbital walls and repositioning the canthal ligament insertion is of utmost importance in the primary surgical intervention. A secondary reconstruction will lead to less satisfying results (Rowe and Williams 1985; Dutton and Al Qurainy 1991; Mathog 1992; Mathog et al. 1995; Rohrbach et al. 2000).
5.8.3.3 Ethmoid
Midface traumas may be combined with skull base fractures. The cribriform plate of the ethmoid bone is most frequently affected, creating a penetrating defect between the neuroand viscerocranium. Liquor fistulas, ascending infections, persisting olfactory disturbance
and traumatic damages to the brain are possible consequences (Theissing 1996; Ernst et al. 2004).
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