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4 Granulomatous Disease andFaciomaxillary Trauma
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women are similarly affected. Patients may present with constitutional com­plaints like fever, night sweats, fatigue, loss of appetite, and weight. It is Multisystem autoimmune dis­ease. Clinical features of WG can be divided into three categories.
• Type 1 GPA—It is characteristic by prolonged upper respiratory tract infection.
• Type 2 GPA—Pulmonary involve­ment is often present and is asso­ciated with a cough, hemoptysis, and cavitary lesions on chest radiography.
• Type 3 GPA is a widely dissemi­nated form of the systemic dis­ease and commonly consists of upper and lower airway involve­ment, cutaneous lesions, and pro­gressive renal involvement.
History, examination, radiologic, and biochemical data ndings help in diagno­sis. The nasal cavity examination usually shows septal perforation with or without granulomatous tissue (Fig.4.5). Patients also have abnormal erythrocyte sedimen­tation rate, hemoglobin, serum creati­nine, and serum c-ANCA levels. These serologic ndings in conjunction with
Fig. 4.5 Nasal endoscopy is showing large septal perfo­ration with crusting and atrophy of surrounding tissue (Courtesy—Dr. Hitesh Verma, Associate Professor, AIIMS, New Delhi, India)
nasal biopsy can provide a denitive diagnosis of WG. The c-ANCA test is highly sensitive for GPA, but a negative result does not exclude the diagnosis. The main agents used to induce remis­sion are glucocorticoids, cyclophospha­mide, and/or methotrexate [7, 8].
(B) Sarcoidosis—It frequently involves
the lymphatic system, lungs, liver, spleen, and bones. It occurs most commonly between the ages of 20 and 40years with women are slightly more often affected than men. The etiology of sarcoidosis is unknown. It is characterized by a seemingly exaggerated immune response against an unknown antigen. Sarcoidosis is manifested by the presence of multiple noncaseating granulomas in affected organ tissues. The sarcoid granuloma consists of a central area of tightly packed epithe­lioid cells surrounded by lympho­cytes and broblasts. The lung is the primary organ affected by sarcoid­osis. Approximately 40% of patients have extrapulmonary involvement. The involvement of the nose and paranasal sinuses by sarcoidosis is relatively infrequent with the inci­dence ranging between 1% and 6%. Symptoms of nasal involvement are nasal obstruction, epistaxis, dys­pnea, nasal pain, epiphora, and anos­mia. Nasal sarcoidosis commonly affects the mucosa of the septum and inferior turbinate. On examination, the nasal mucosa is dry and friable with crusts. Submucosal nodules with a characteristic yellow color may be noted. In more advanced dis­ease, irregular polypoid, friable mucosa is seen and bleeds readily. More severe inltration may lead to septal perforation or oronasal stu­lae. Diagnosis is based on a combi­nation of histologic, radiographic, immunologic, and biochemical data.
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Pulmonary ndings of either hilar lymphadenopathy or pulmonary brosis are common. Biochemical examination shows elevated serum or urinary calcium. Serum angioten­sin-converting enzyme (ACE) eleva­tions occur in 83% of patients with active sarcoidosis, which has become very useful for the diagnosis and for monitoring of relapse. The diagnosis of sarcoidosis is conrmed by the presence of noncaseating granulo­mas, composed of multiple epitheli­oid cells and Langerhans giant cells in the nasal mucosa. Negative stains for fungus and acid-fast bacilli help to support the diagnosis. Stage I sar­coidosis undergo spontaneous remis­sion within 2years without specic treatment. Sarcoidosis with elevated ACE values or extrapulmonary involvement usually requires treat­ment; this statement applies to most cases of nasal sarcoidosis. The mainstay of treatment for sarcoid­osis is systemic corticosteroids. Methotrexate has been used to treat nasal sarcoidosis successfully. Nasal symptoms may be treated with nasal saline irrigations and topical nasal steroids. Secondary infections treated with culture-directed antimi­crobial therapy. Surgery is advisable in medically controlled symptomatic nasal obstruction or chronic sinus­itis, in selected patients [8, 9].
(C) Churg–Strauss syndrome—
Eosinophilic granulomatosis with polyangiitis (EGPA) traditionally termed, Churg–Strauss syndrome is a rare systemic necrotizing vasculitis that affects small-to-medium-sized vessels. It occurs equally among men and women with mean age of 50 years. Autoimmunity is evident with the presence of hypergamma­globulinemia, increased levels of immunoglobulin E (IgE), rheuma­toid factor, and Antineutrophil cyto-
plasm antibody (ANCA). CSS is characterized by necrotizing vasculi­tis of small and medium-sized ves­sels, Necrotizing extravascular granulomas, eosinophilia of the ves­sels and perivascular tissue. CSS consists of three phases:
1. A prodromal phase with allergic rhinitis and asthma
2. an eosinophilic inltrative phase with chronic eosinophilic pneu­monia (Loefer syndrome) or gastroenteritis, and
3. A systemic, life-threatening vas­culitis with granulomatous inammation.
The patients presented with nasal crusing & polyposis, distringuished from GPA is by extensive polyposis on both side & asthma. The c-ANCA test result is also negative in CSS, although perinuclear antineutrophil cytoplasmic antibodies (p-ANCAs) is found in 70% of patients. Glucocorticoids is the treatment for CSS whereas cyclophos­phamide may be helpful in life- threatening cases or in patients with poor prognostic factors. Rituximab (B-cell- depleting mono­clonal antibody) has been used with favor­able responses in patients with CSS refractory to conventional treatments. The anti-IgE monoclonal antibody omalizumab has demonstrated a corticosteroid-sparing effect in refractory or relapsing EGPA. Mepolizumab an interleukin-5 antagonist monoclonal antibody (IgG1 kappa) is being studied for its efcacy in CSS [8, 10].
(D) T-cell lymphoma—It is extra-nodal
NK/T-cell lymphoma, nasal type (ENKL) is a rare form of non­Hodgkin’s lymphoma. Disease causing destruction of the midline structures of the palate and nasal fossa, so it is also known as midline lethal granuloma. Histopathology shows the presence of polymorphic lymphoid inltrate of mature, immature, and atypical lympho­cytes, plasma cells, histiocytes,
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eosinophils with necrosis of cells. Immunohistochemical studies dem­onstrate positivity for T-cell mark­ers like CD2, CD7, CD45RO, and CD43 and natural killer cell marker CD57.35. The causative role of EBV in the pathogenesis of T-cell lymphoma has been strongly sug­gested. Initial symptoms are nasal obstruction, pus, and serosangui­nous nasal discharge. As the disease progresses, unilateral mucosal ulceration with extension into the palate, maxillary sinus, and upper lip is seen (Fig.4.6). Oronasal s­tula and nasal septal perforations are frequently present. The charac­teristic clinical feature with necro­tizing atypical cell exudates on histopathology suggests the diagno-
sis. Therapy for localized disease is radiotherapy. Chemo-radiotherapy is the treatment for advanced lesion [11, 12]. The chemotherapy regi­mens are mentioned in Chap. 10.
4.1.2 Other Granulomatous Pathology
Inammatory Pseudotumor (IPT)—It is benign idiopathic non-neoplastic inammatory disease and it can involve any organ. It presents with his­tory of the progressive, locally destructive mass lesion. Radiologically, it is inltrative in sur­rounding structures so it can mimic as skull base osteomyelitis and invasive fungus sinusitis. It is isointense on T1 and hypointense on T2 MRI images. It most commonly involves orbit whereas nose and paranasal sinus involvement are rela­tively rare. Immunoglobulin G4 level can be raised in IPT.The nal diagnosis of IPT is based on characteristic histopathology nding where tissue shows the presence of dense lymphoplas­mocytic inltration with obliterative phlebitis, storiform brosis. Lymphoplasmocytic inltra­tion is seen in IgG4 related granulomatous lesions with serum IgG level above 135mg/dl. The most accepted treatment modality is systemic steroid, radiotherapy alone, or in combination. Surgery and immune-suppression are also mentioned as modality in few reports [13].
Fig. 4.6 The clinical photograph is showing reddish skin over the right half of nose with widening of ala of the right side (Courtesy—Dr. Hitesh Verma, Associate Professor, AIIMS, New Delhi, India)
4.2 Part B: Atrophic Rhinitis
Atrophic rhinitis is a chronic inammatory condi­tion characterized by progressive atrophy of the nasal mucosa and underlying bone of the turbi­nates leading to the formation of thick crusts and a constant foul smell (Ozaena) in the nose. The natu­ral ostium of the sinuses is visible in routine nasal endoscopy without effort. It can be of two types— Primary and Secondary. Histopathological exam­ination reveals the presence of squamous epithelium instead of ciliated columnar epithe­lium. The choice of investigation is prescribed on the basis of history for secondary atrophic rhini­tis. The selection of management is based on
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symptomatology and response. The rst line of management is to increase mucosal clearance by nasal douches. The last management option is the closure of the nasal cavity for certain period.
Primary Atrophic rhinitis is multi-factorial in origin. Hereditary, as the disease is known to involve more than one member in the same family. In some cases, it usually involves females more than males and starts at puberty. The disease is self­limiting, tends to cease after menopause thus hor­monal inuence cannot be ruled out. It is more common in hot and humid climate specially in the low socioeconomic group. Nutrition has also been shown to play a vital role as deciency of vitamin A, D, or iron or some other dietary factors have been associated with the disease and are likely causes. Autoimmune process in which viral infec­tion or some other unspecied agents trigger anti­genicity of nasal mucosa. The antibody released causes destruction of the nasal mucosa is also pos­tulated. The most widely accepted fact is the infec­tive process where in various organisms have been cultured from cases which are Klebsiella ozaenae, (Perez bacillus), diphtheroids, P. vulgaris, E. coli, Staphylococci, and Streptococci. They are all con­sidered to be secondary invaders responsible for foul smell rather than the primary causative organ­ism. Specic infections like syphilis, lupus, lep­rosy, and rhinoscleroma are the etiology for secondary atrophic rhinitis which may cause destruction of the nasal structures leading to atro­phic changes. Atrophic rhinitis can also result from long-standing purulent sinusitis, radiotherapy to the nose, or excessive surgical removal of turbi­nates [14]. Unilateral Atrophic Rhinitis—changes in the wider side of the nasal cavity is sometimes seen in cases of marked septal deviation.
4.2.1 Pathology
The characteristic feature is squamous metapla­sia of the normal ciliated columnar epithelium along with its endarteritis obliterans is seen in the mucosa, periosteum, and bone leading to atrophy of seromucinous glands, venous blood sinusoids, and nerve elements [15]. The bone of turbinates undergoes resorption causing the widening of nasal chambers. Paranasal sinuses are small due
to their arrested development. Young and Taylor
16] have proposed that atrophic rhinitis is of two
[ types, depending upon the vascular involvement into two types. Type I is major subtype (50% to 80%) and is characterized by endarteritis obliter­ans, periarteritis, and periarterial brosis of ter­minal arterioles as a result of chronic infection with round cell and plasma cell inltration. Type II is minor subtype (20% to 50%) and shows cap­illary vasodilation with active bone resorption. Infection affects the surfactant system leading to surfactant decit [17] through several mecha­nisms including, the absence of noteworthy SP-A gene up-regulation and diminution of SP-A pro­tein reserves, also inammatory cytokines pro­duced in response to sepsis inhibiting the synthesis of surfactant leading to decrease the efciency of mucociliary clearance also, surfac­tant deciency impairs opsonization and phago­cytosis of bacteria thus developing into a vicious cycle of colonization of nasal mucous by bacteria and causing destruction overtime.
4.2.1.1 Clinical Features
The disease is commonly seen in females and starts around puberty. Merciful anosmia is a term characterized by the foul smell from the nose but the patient herself is unaware of the smell due to marked anosmia which accompanies these degenerative changes thus making the patient a social outcast. Patient may also complain of nasal obstruction in spite of unduly wide nasal cham­bers. This is due to large crusts lling the nose with atrophy of nerve ending. Epistaxis may occur when the crusts are removed. Complain of decreased hearing and fullness of ear due to obstruction to eustachian tube. On examination, anterior rhinoscopy shows the nasal cavity to be full of greenish or grayish black dry crusts cover­ing the turbinates and septum, which bleeds if removed (Fig.4.5). On removal of crusts, nasal cavities appear roomy with atrophy of turbinates which may be reduced to mere ridges and the posterior wall of nasopharynx can be easily seen. Nasal mucosa appears pale and dermatitis of the nasal vestibule may be present. Septal perfora­tions can be seen leading to saddle nose defor­mity. Atrophic changes may also be seen in the pharyngeal mucosa which appears as dry and
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glazed with crusts leading to atrophic pharyngi­tis. Sometimes the atrophic changes may extend to the laryngeal mucosa causing cough and hoarseness of voice typical of Atrophic Laryngitis. middle ear effusion, tympanic membrane retrac­tions due to obstruction to eustachian tube causes hearing-impairment in the minority of cases [18]. Paranasal sinuses are usually small and underde­veloped with thick walls. The presence of 2 or more features beyond 6 months are in favor of atrophic rhinitis: recurrent epistaxis, episodic anosmia, nasal purulence, crusting, surgical intervention in two or more sinuses, and presence of chronic inammatory disease [19].
4.2.1.2 Investigations
Mainly aim to establish the diagnosis by exclud­ing secondary causes of atrophic rhinitis and other granulomatous conditions. Low hemoglobin and peripheral blood smear show microcytic hypo­chromic picture pointing towards iron deciency anemia. As bacterial infection is seen, there is raised total leukocyte count (TLC) and differen­tial leukocyte count (DLC) show lymphocytosis. Commonly, low Serum protein and plasma vita­min levels are seen due to malnutrition. Other tests done to rule out secondary causes are the erythrocyte sedimentation rate (ESR) which is raised in tuberculosis and granulomatous infec­tion. Blood sugar is to rule out diabetes mellitus. VDRL test is to diagnose secondary to syphilis. Chest X-ray and Mantoux test/enzyme-linked immunosorbent assay (ELISA) for tuberculosis. Skin biopsy is to get the diagnosis of leprosy. Nasal biopsy is for granulomatous diseases such as lupus, leprosy, scleroma, and gumma. CT scan of paranasal sinuses shows mucoperiosteal thick­ening of paranasal sinuses, loss of denition of osteomeatal complex due to resorption of eth­moidal bulla and uncinate process, hypoplastic maxillary sinuses, enlargement of the nasal cavity with the erosion of the lateral nasal wall, and atro­phy of inferior and middle turbinates.
crusts and the associated infection, putrefying smell, and to further check crust formation. alka­line nasal douching solution is made by dissolv­ing a teaspoonful of powder containing soda bicarbonate one part, sodium biborate one part, sodium chloride two parts in 280 ml of water. Saline acts as solvent and it washes thick mucus, crust, and debris. Nasal douches also increase mucosal humidication and ciliary function. The solution is run through one nostril and comes out from the other. It loosens the crusts and removes thick tenacious discharge. Initially, irrigations are done two to three times a day but later once every 2–3days is sufcient. After crusts are removed, the nose is painted with 25% glucose in glycer­ine. This inhibits the growth of proteolytic organ­isms which are responsible for foul smell. In place of this antibiotic spray can also be used like Kemicetine antiozena solution contains chloro­mycetin, oestradiol, and vitamin D2 but antibiot­ics are not having much role in the treatment of atrophic rhinitis. Budesonide based nasal wash (2ml in 1000ml saline irrigation solution) is also recommended after saline nasal douches to improve symptomatology.
Other treatment strategies that have shown benet are oestradiol spray which has been found to increase vascularity of nasal mucosa and regeneration of seromucinous glands for Young and Taylor Type1 not Type 2. Placental extract, when injected submucosally in the nose may pro­vide some relief. A potassium iodide oral prepa­ration promotes and liquees nasal secretion [20]. Mitomycin C, platelet-rich plasma, and ozone were tried as an adjuvant treatment with nasal douches but both medications were not showed any signicant benet. Nasal endoscopic surveillance is recommended twice a year to clear crusting and to remove adhesion till symp­toms persist.
4.2.3 Surgical Management
4.2.2 Management Aim
Complete cure is not yet possible. Goal of treat­ment is to maintain nasal hygiene by removal of
The surgeries can be broadly classied into four categories with different aims.
1. Surgeries for narrowing the nasal cavities—
Nasal chambers are very wide in atrophic rhi-
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nitis and air currents dry up secretions leading to crusting. Narrowing the size of the nasal airway helps to relieve the symptoms. Among the techniques followed for narrowing the nasal cavities initially Wilson injected Submucosal a mixture of 50% Teon in glyc­erin paste. Then insertion of the implant under the mucoperiosteum of the oor and lateral wall of the nose and the mucoperichondrium of the septum was done and the types of implants used can be classied into two (a) Living tissue implants
(i) Autogenous—dermofat, bone,
cartilage (ii) Homogenous—placenta (iii) Heterogenous—bioimplant
(b) Synthetic implants—acrylic, silicone,
Teon, proplast
2. Surgeries to promote regeneration of normal mucosa: Young’s operation [21]—In it both the nostrils are closed completely just within the nasal vestibule by raising aps. They are opened after 6months or later. In these cases, mucosa may revert back to normal and crust­ing reduced. To avoid the discomfort of bilat­eral nasal obstruction, modied Young’s operation was devised which aims to partially close the nostrils instead of complete closure. It is also claimed to give the same benet as Young’s (Fig.4.7).
Fig. 4.7 The clinical photograph is showing modied Young’s operation. The catheter is placed to prepare small size nostril (Courtesy—Dr. Hitesh Verma, Associate Professor, AIIMS, New Delhi, India)
3. Surgeries to increase lubrication of dry nasal mucosa: There are two main techniques used one is Raghav Sharan’s operation [22], in which implantation of maxillary sinus mucosa is done in the nostril. And the other is Wittmack’s tech­nique, where implantation of the Stenson’s duct is done (parotid duct) into the maxillary antrum.
4. Surgeries to improve the vascularity of the nasal cavities: Sympathetic tone causes vaso­constriction and emptying of the venous sinusoids via the arteriovenous anastomosis. A reduction in sympathetic tone causes venous sinusoids dilatation along with the increase in blood supply by decreasing the vasoconstric­tion which is being utilized in these proce­dures that are satellite ganglion block, cervical sympathectomy, pterygopalatine fossa block, and juxta-nasal sympathectomy.
Number of surgical options is mentioned in literature but no control trial is performed till date for the efcacy of different procedures [20].
4.3 Part C: Maxillofacial Trauma
4.3.1 Introduction
Maxillofacial trauma presents in emergency as part of polytrauma or standalone facial trauma. The common causes include motor vehicle acci­dents, fall from height, or assault. Maxillofacial trauma is very commonly associated with neuro­logical and eye trauma, along with possibility of solid viscera injury. This necessitates team approach to this entity. Like any trauma, princi­ples of Advanced Trauma Life Support (ATLS) should be followed and attention to Airway, Breathing, Circulation, Disability, and Exposure (ABCDE) be done appropriately.
Non-comminuted maxillary fractures seldom
bleed profusely. At the same time, in severe frac­tures nasal packing alone to control bleeding may be insufcient as splayed walls of the nasal cav­ity and/or palatal process of maxilla will not allow the packing to generate enough pressure to control bleeding. In such cases, airway securing followed by both oral and nasal packing can be considered (Fig.4.8a, b).
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Fig. 4.8 (a) Patient with nasoethmoidal and bilateral maxillary fracture who needed securing of airway and oral and nasal packing to control bleeding. (b) 3D CT reconstruction of the same patient shows severely com-
4.3.1.1 Assessment ofaMaxillofacial Trauma Patient
The mechanism of injury is crucial to under­standing the extent and pattern of trauma. The direction, amount of force, and object with which trauma is sustained gives an insight into the pat­tern of injury, hence a careful history about the circumstances how the trauma was sustained needs to be enquired. Careful attention to the scalp and facial wounds for laceration, contami­nation, and foreign material/debris impaction is needed. Facial skeleton should be assessed in a structured protocol to evaluate frontal bones, supra, and infraorbital margins, nasal bones, zygomatic arch and mandible. Observe for any step deformity or discontinuity. Intraoral assess­ment for occlusion, hematoma in the oor of mouth, missing/fractured/avulsed teeth is imper­ative (Fig.4.9). Orbital assessment for telecan­thus, mobility, acuity, pupillary size, and reaction should be done. Anterior rhinoscopy is done for septal fracture/hematoma. Sensation over the face along the distribution of infraorbital and mental nerves is important in preoperative period in a conscious patient. This may prevent potential postoperative medicolegal issues. Coexistent medical conditions like renal, hepatic, or cardio-
minuted nasoethmoidal complex and bilateral maxillary fractures leading to splaying of lateral nasal wall. Bleeding in such a case may not be controlled by nasal packing alone
Fig. 4.9 Hematoma in oor of mouth of and edentulous patient who had fracture mandible
vascular ailments along with any coagulopathies, should be ruled out which may have a bearing on wound healing and postoperative complications.
4.3.2 Imaging
Multidetector CT scan with three-dimensional shaded surface display is standard for evaluation
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Fig. 4.10 3D shaded surface display with fractures involving left fronto-zygomatic buttress, left angle of mandible, right parasymphysis, midline maxillary, and left frontal process of the maxillary bone
(Fig.4.10). X-ray of the skull in anteroposterior, lateral, and submentovertical view along with X-ray mandible lateral oblique view may be done if CT scan is not available.
4.3.3 Timing ofSurgical Intervention
In cases of midfacial, nasal, zygomaticomaxil­lary complex, and frontal fractures, early opera­tive intervention may not be feasible due to concomitant signicant facial swelling and/or intracranial trauma. Hence, the surgical interven­tion is planned after the reduction in swelling. In patients with solid organ or hollow visceral trauma too, a denitive management of these injuries takes priority. Only after any other vital organ injury has been assessed and addressed, facial trauma care should be planned.
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Fig. 4.11 Image shows fracture of right ramus of man­dible. Also seen are midline maxillary fracture, right side Le Fort 2 maxillary fracture, and fracture of the frontal bone
nasotracheal intubation is adequate. For Le Fort 2 and Le Fort 3 fractures, a submental intubation or tracheotomy is considered.
4.3.4.1 Mandibular Fractures
Based on the location, they are divided into con­dylar/subcondylar, parasymphyseal (between mandibular canines)/symphyseal (between cen­tral mandibular incisors), ramus (Fig. 4.11) (posterior border of masseter to height of sig­moid notch), angle (third molar to posterior bor­der of masseter), body (distal part of mandibular canine to distal mandibular second molar), and alveolus [
23].
Condylar fractures may be intracapsular or extracapsular. Since these are often missed, a keen observation is needed during clinical exami­nation. A small wound on the chin, malocclusion with otherwise preserved mandibular arch, dif­fuse parotid swelling, and parotid area crepitus are subtle pointers (Fig.4.12a, b).
Intermaxillary xation is done by closed (tooth-borne/bone-borne) or open techniques.
4.3.4 Airway Management During Surgery
For isolated mandibular, zygomaticomaxillary complex, and Le Fort 1 fractures of midface, an
1. Tooth-borne closed techniques—Erich arch bars, interdental wires (Ivy loops/eyelet wires, etc.) or lingual splints.
2. Bone-borne techniques—skeletal suspen- sion wires, IMF screws, external xators, hybrid systems.
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Fig. 4.12 (a) Left parotid swelling and ear bleeding in a patient with the left condylar fracture. The patient was otherwise well preserved with no other apparent facial
Open techniques are preferable and are based on AO/ASIF guidelines. These methods include­two plate xation, reconstruction plate, lag screws. Fracture line can be accessed by tran­soral/transbuccal approach (body/symphysis/ parasymphysis), transcervical-submandibular approach (angle), transcervical-retromandibular approach (ramus/subcondylar), or endoscopic approach (subcondylar). Some fractures of ascending ramus and angle can be plated by tran­soral approach using a transbuccal device for xation.
4.3.5 Management ofNasal Bone
Fractures
Nasal fracture is classied into ve subtypes on clinical basis
• Grade 0—No displacement.
• Grade 1—The deviation of nose is less than
50% of width of bridge of nose.
• Grade 2—The deviation of nose is more than
50% to almost equal of width of bridge of
nose.
• Grade 3—The deviation of nose is more than
width of bridge of nose.
• Grade 4—It almost reaching to the cheek.
Nasal fractures are also divided on the basis of patterns of damage.
injury. (b) Same patient showing malocclusion due to condylar fracture
Category 1 Fracture
In this, fracture segments
are generally maintained position by their infe­rior attachment with upper lateral cartilage. It occurs in less severe form of trauma and grade 1 fractures come under category 1 fracture. Chevallet was the rst documenting person so it was also known as Chevallet fracture.
Category 2 Fracture Nasal bones, frontal pro­cess of the maxilla, and septal bones are involved in this fracture. It is seen in the more severe form of trauma. Grade 2 and above fractures come under category 2 fractures. It is also known as Jarjavay fracture (C shaped fracture).
Category 3 Fracture
It involves all nasal bone
with orbit, ethmoid bone, and any other facial bone. Clinically, patient may have pig-like appearance. It is also classied into two, depend­ing upon skull base involvement. In type 2, ante­rior cranial base, posterior wall of frontal sinus, and optic nerve is involved.
For evaluation of nasal bone fractures, clinical assessment is most informative. Additionally, X-rays (Water’s view, lateral view) and in select cases (nasoethmoidal fractures, minimally depressed fractures at rhinion/ nasion) CT may be requisitioned.
For simple fractures, closed reduction with Asch or Walsham forceps with digital manipula­tion is carried out (Fig.4.13a, b). Septal straight-
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Fig. 4.13 Preoperative (6a) and postoperative (6b) image of a patient with nasal bone fracture who underwent closed reduction
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ening is done if required. If signicant septal cartilage and septal fracture are present, emer­gency septoplasty can be considered. Telescoping of fragments with signicant comminution may merit external xation using lead plates or ortho­pedic plates [24].
4.3.6 Zygomatic Fractures
Fractures of zygomaticomaxillary complex (ZMC) (also called trimalar, tripod, tetrapod, quadrapod) may lead to infraorbital anesthesia, trismus, diplo­pia, enophthalmos, palpable bony suture line abnormalities, and attened malar prominence. Clinical evaluation includes the assessment of malar depression, mouth opening, ocular examina­tion for mobility and diplopia, and sensation over area of V2 division. Open reduction and xation by miniplates of ZMC fractures are carried out by using a combination of approaches: vestibular for zygomaticomaxillary buttress, subciliary/subtarsal/ transconjunctival for infraorbital rim, and brow/ eyebrow for lateral orbital rim [23]. Comminuted
and displaced fracture of zygomatic arch are reduced and xed by coronal approach. Non­comminuted depressed fractures of arch that are cosmetically and functionally signicant can undergo closed reduction by temporal (Gilles) or vestibular (Keen) approach using periosteal or Rowe zygoma elevator.
4.3.7 Fractures ofMidface
These are usually classied as Le Fort 1 (oating palate), Le Fort 2 (oating maxilla), and Le Fort 3 (craniofacial dysjunction). However, in the current scenario of high-velocity injuries, fracture lines may not follow lines of least resistance, which was the basis of this classication, and mixed fractures are more common presentation [23].
Impacted maxillae need to be disimpacted using Rowe disimpaction forceps. Denitive management is preferably by intermaxillary xa­tion and open reduction and internal xation using miniplates. Fractures can be accessed by vestibular incision (Le Fort 1), a combination of