Changing the surgical dogma in frontal sinus trauma: transnasal endoscopic repair

Challenging Dogmas in Plastic Surgery

In medicine, dogmas are subject to evolution and refinement as new research and technologies emerge. The aim of this study was to search for dogmas which were challenged and potentially revised in the plastic surgery field. A search on PubMed for "dogma and plastic surgery" yielded 80 papers. The queries "surgical dogma and craniofacial surgery" and "surgical dogma and flap" returned 9 and 21 papers, respectively. "Surgical dogma and hand" and "surgical dogma and wound healing" produced 41 and 25 papers, respectively. Removing 35 duplicate papers, 141 abstracts were reviewed. Of these, 78 were excluded, leaving 63 papers for analysis. The dogmas being challenged within the field of plastic surgery were classified into various categories. The distribution of these challenged dogmas was as follows: wound healing: 14.29%, epinephrine use: 9.52%, flap surgery: 7.94%, breast reconstruction: 6.35%, rhinoplasty: 7.94%, hand surgery: 4.76%, pressure sores: 4.76%, chemical peel: 4.76%, and hand injuries: 3.17%. The widespread focus on improving wound healing techniques indicates a need for more effective treatments and faster recovery times. Significant attention has been directed toward the use of epinephrine, particularly in fingers, which may reflect ongoing debates about its safety. Innovations and improvements in flap surgery could lead to better reconstructive outcomes. Challenging existing dogma is a vital process and a driving force in the advancement of clinical science. These challenges and potential revisions reflect the dynamic nature of plastic surgery, where ongoing research, patient outcomes, and evolving societal norms drive continuous improvement and adaptation in practices and principles.

Transglabellar Butterfly Incision for Anterior Cranial Vault Access: Case Report

(1) Background: The transglabellar approach, a type of transfacial technique, typically involves glabellar resection and opening the frontal sinus via a bicoronal incision, providing access to the anterior cranial vault. To prevent complications, the frontal sinus is typically obliterated. However, the success of transnasal endoscopic techniques has prompted a re-evaluation of these traditional methods. (2) Methods: This paper provides a brief literature review and discusses the removal of an elongated glioma of the left gyrus rectus (4.4 × 1.9 × 2.2 cm) in a 63-year-old male using a transglabellar subfrontal approach via a butterfly incision, with frontal sinus preservation. (3) Results: An uneventful gross-total resection of a WHO grade II oligodendroglioma was achieved. There is a paucity of literature describing a transglabellar subfrontal approach via a butterfly incision with frontal sinus preservation. (4) Conclusions: The described approach could be utilized in selected cases such as small intra-axial lesions oriented longitudinally along the inferomedial frontal lobe from the posterior wall of the frontal sinus to the anterior communicating artery complex in patients with pre-existing glabellar rhytids. Since this is merely a case presentation, we cannot conclude that this represents established clinical practice. The outcomes of this approach should be investigated in the future.

Management of Frontal Sinus Fractures at a Level 1 Trauma Center: Retrospective Study and Review of the Literature

Study Design

Case series.

Objective

This retrospective review of frontal sinus fractures aims to describe our current experience managing these fractures at an urban level I trauma center.

Methods

An institutional database of 2081 patients who presented with maxillofacial fractures on computed tomography face/sinus in 2019 was queried for all patients with traumatic frontal sinus fractures. Demographics, trauma-related history, management approach, and follow-up data were collected and analyzed.

Results

Sixty-three (7.3%) patients had at least one fracture involving the frontal sinus. The most common etiologies were assaults, falls, and motor vehicle accidents. Surgical repair was performed in 26.8% of patients with frontal sinus fractures, and the other 73.2% were observed. Fractures that were displaced, comminuted, obstructive of the frontal sinus outflow tract, or associated with a dural tear or cerebrospinal fluid leak were more likely to be operative.

Conclusions

The majority of frontal sinus fractures in this study were treated with observation. Despite advances in transnasal endoscopic approaches, many surgeons still rely on open approaches to repair frontal sinus fractures.

Management of frontal sinus fractures requiring surgical intervention: An analysis of a case series

<b><br>Introduction:</b> Isolated frontal bone fractures constitute 5-15% of traumatic facial fractures cases, with frontal sinus fractures categorized into anterior wall, posterior wall, or complex fractures. The approach is tailored to fracture type and bone fragment displacement. This paper presents the summary of surgical management in patients with isolated and complex fractures of the anterior wall of the frontal sinus.</br> <b><br>Material and Methods:</b> Five patients with different frontal sinus fractures were treated surgically. The same management protocol - diagnosis and surgical intervention was implemented in all cases The retrospective analysis included fracture assessment, surgical approach, and long-term outcomes evaluation.</br> <b><br>Results:</b> The most common cause of fractures was falls, while two complex fractures involved the anterior and posterior walls. External approach, bone fragment removal, endoscopy, and external stabilization were employed in all cases. One patent required delayed revision surgery due to retaining metallic foreign body. Follow-up radiological examinations showed proper healing and cosmetic outcomes were satisfactory in all of the cases.</br> <b><br>Conclusion:</b> Surgical management of isolated fractures of the frontal sinus anterior wall, involving bone fragment removal, realignment, and endoscopy, yielded satisfactory functional and cosmetic outcomes without internal or external stabilization. Long-term monitoring and symptom assessment are crucial, especially in cases with penetrating injuries and foreign body risk.</br>.

Approaches to the Maxillofacial Skeleton: Application of Standard and Minimally Invasive Techniques

Management of maxillofacial trauma is complex and challenging and requires a clear understanding of facial anatomy and function. There are multiple approaches that can be used to access each anatomical region, each with specific indications and complication profiles. Open, "invasive" approaches are being replaced or augmented with minimally invasive and endoscopic approaches when possible. Thorough knowledge of indications, surgical techniques, and potential complications allows surgeons to make appropriate decisions for access and repair of fractures. This article is a comprehensive review of standard and minimally invasive approaches, with description of techniques and pros and cons for their use.

Long-duration pain block for postoperative anesthesia after endoscopic sinus surgery

KEY POINTS

A long-duration pain block did not decrease postoperative pain or opioid consumption. Extended sinus procedures do not lead to additional postoperative pain or opioid consumption.

Current Trends in Head and Neck Trauma

The practicing otolaryngologist frequently encounters consultation for injuries in the head and neck. Restoration of form and function is essential to normal activities of daily living and quality of life. This discussion intends to provide the reader with an up-to-date discussion of various evidence-based practice trends related to head and neck trauma. The discussion focuses on the acute management of trauma with minor emphasis on secondary management of injuries. Specific injuries related to the craniomaxillofacial skeleton, laryngotracheal complex, vascularity, and soft tissues are explored.

Evidence-Based Medicine for Midface/Orbit/Upper Facial Fracture Repair

The face is one of the most common areas of traumatic injury, making up approximately 25% of all injuries in 2016. Assault, motor vehicle collision (MVC), fall, sports, occupational, and gunshot wounds (GSW) are all common causes of facial fractures, with MVC and GSW leading to significantly higher severity of injuries. Most facial fractures occur in the upper two-thirds of the face. Most facial fractures require timely assessment, diagnosis, and treatment for optimal restoration of facial structures and functions. Without proper initial management, significant complications including immediate complications such as airway compromise, massive bleeding, infection, intracranial hemorrhages, or even death, and long-term complications such as poor functional outcomes and aesthetic setbacks can occur. The goal of this review is to summarize the management of fractures of the upper face, orbit, and midface and provide an update about complications and their management.

Advances in Sinus Surgery for Nasal Polyps

BACKGROUND

Chronic rhinosinusitis with nasal polyps (CRSwNP) is comprised of a diverse group of endotypes that cause significant morbidity for afflicted patients. While endoscopic sinus surgery helps ameliorate the disease, polyps frequently recur. Newer strategies are intended to provide access for topical steroid irrigations in attempts to improve the disease process and quality of life, and decrease overall recurrence of polyps.

OBJECTIVE

To review the current literature examining the latest surgical approaches for CRSwNP.

METHODS

Review article.

RESULTS

In dealing with the recalcitrant nature of CRSwNP, surgical techniques have simultaneously become more nuanced and aggressive. Bony resection in anatomically unfavorable areas such as the frontal, maxillary, and sphenoid outflow regions, replacing diseased or denuded mucosa with healthy grafts or flaps at the neo-ostia, and introducing drug-eluting biomaterials to newly opened sinus outflow tracts are highlights in the recent advancements in sinus surgery for CRSwNP. The Draf 3 or modified endoscopic Lothrop procedure has become a standard technique and demonstrated to improve quality of life and decrease polyp recurrence. A number of mucosal grafting or mucosal flap techniques have been described that cover exposed bone of the neo-ostium and evidence shows that this improves healing and diameter of the Draf 3. Partial middle turbinectomy, while controversial, appears to help decrease polyp recurrence in long-term follow-up studies. Modified endoscopic medial maxillectomy improves access to the maxillary sinus mucosa, facilitates debridement and, particularly, in the cystic fibrosis nasal polyp patient, improves overall management of the disease. Sphenoid drill-out procedure provides wider access for topical steroid irrigations and also may improve management of CRSwNP.

CONCLUSION

Surgical intervention remains a mainstay of therapy for CRSwNP. Newer techniques revolve around improving access for topical steroid therapy.

Balloon Sinuplasty and Stenting in the Management of Complex Frontal Sinus Outflow Tract Fractures

OBJECTIVE

Classical management of complex fractures involving the frontal sinus outflow tract (FSOT) favors obliteration or cranialization to avoid delayed complications. We aim to exhibit success with a novel application of balloon sinuplasty and frontal stenting in the management of complex injuries disrupting the FSOT, which might have otherwise required more invasive interventions.

STUDY DESIGN

Retrospective review.

SETTING

Single institution, level 1 trauma center.

METHODS

Retrospective review of patients presenting to a level 1 trauma center with fractures involving the FSOT. Outcomes include patency of the FSOT on imaging and endoscopy, rate of complications, degree of residual tabular displacement, and need for revision surgery.

RESULTS

Twenty-five patients met inclusion criteria, with complete FSOT obstruction seen in all cases on computed tomography. All patients underwent balloon sinuplasty with frontal sinus stenting; 48% underwent concurrent anterior table repair, and 36% open repair of nasoorbitoethmoid complex fractures. The mean follow-up length was 13.9 months, at which time 91.3% of patients demonstrated radiographic and endoscopic FSOT patency. No residual sinus opacification or pneumocephalus was observed.

CONCLUSION

Balloon sinuplasty with frontal sinus stenting is a straightforward and minimally invasive technique that can create a safe sinus in complex fractures disrupting the FSOT while avoiding the need for more invasive procedures.

[Diagnosis and Treatment in frontobasal fractures]

Traumatic brain injury can result in frontobasal fractures (FBF). The goals of treatment for FBF are to eliminate primary morbidity and/or prevent secondary morbidity. Of particular importance in this regard is the proximity of important sensory organs for hearing, vision, smell, and taste, as well as their supplying nervous structures. Medical history, clinical findings, or CT scan are necessary and should lead to an individual evaluation. Depending on the severity of the fractures, the following disciplines may be involved in the treatment of FBF: neurosurgery, plastic surgery, oral and maxillofacial surgery, and/or otorhinolaryngology. Particularly less invasive endoscopic endonasal therapy is a specialty of otorhinolaryngologic surgeons and has not been widely established in other disciplines. The present work provides an overview of the current state of the art in terms of the following aspects, taking into account the current literature: anatomic principles, classification of fractures, diagnostics (in particular clinical examination, imaging, and laboratory chemistry tests), clinical symptoms, and treatment.

Frontal Sinus Fractures: Evidence and Clinical Reflections

Background:

Despite significant advances in the management of frontal sinus fractures, there is still a paucity of large-cohort data, and a comprehensive synthesis of the current literature is warranted. The purpose of this study was to present an evidence-based overview of frontal sinus fracture management and outcomes.

Methods:

A comprehensive literature search of PubMed and MEDLINE was conducted for studies published between 1992 and 2020 investigating frontal sinus fractures. Data on fracture type, intervention, and outcome measurements were reported.

Results:

In total, 456 articles were identified, of which 53 met our criteria and were included in our analysis. No statistically significant difference in mechanism of injury, fracture pattern, form of management, or total complication rate was identified. We found a statistically significant increase in complication rates in patients with nasofrontal outflow tract injury compared with those without.

Conclusions:

Frontal sinus fracture management is a challenging clinical situation, with no widely accepted algorithm to guide appropriate management. Thorough clinical assessment of the fracture pattern and associated injuries can facilitate clinical decision-making.

The Draf III procedure: A review of indications and techniques

The Draf Ⅲ procedure involves the creation of a common frontal sinus cavity. The most common indication for the Draf Ⅲ procedure is chronic rhinosinusitis of the frontal sinuses despite the failure of more conservative interventions such as bilateral Draf Ⅱa procedures. Primary Draf Ⅲ may be indicated in patients with a high risk of failures such as those with severe polyposis and those with a frontal sinus opening less than 4 mm on computed tomography imaging. Other indications for the Draf Ⅲ include access for tumor removal and repair of traumatic fractures of the frontal sinus. The “inside‐out” Draf Ⅲ procedure is the standard approach when the frontal recess anterior–posterior diameter is wide enough for instrument access, usually larger than 4–5 mm. The “outside‐in” Draf Ⅲ procedure can be done when the frontal recess is too narrow to safely accommodate instruments. Regular follow‐up with debridement should be done to prevent neo‐ostium stenosis.

Association of frontal and maxillary bone fractures and concomitant craniocerebral injuries in patients presenting with head trauma

Background

Maxillofacial fractures and craniocerebral injuries are common in patients with head trauma. These are injuries with high mortality and morbidity. Therefore, patients with head trauma should be evaluated early with a multidisciplinary approach.

Aim

The association between frontal and maxillary bone fractures and concurrent craniocerebral injuries were investigated in patients presenting with head trauma in this study. The data of the patients were analyzed retrospectively.

Methods and Material

Age and gender distributions were evaluated in frontal and maxillary fractures. Concomitant craniocerebral injuries were investigated. Craniocerebral injuries were grouped as pneumocephalus, extra-axial, intra-axial injuries and brain edema. Craniocerebral injuries in frontal and maxillary fractures were compared statistically.

Results

Frontal bone and maxillary bone fractures were detected in 24% and 95% of the patients. Coexistence of pneumocephalus and intra-axial injuries in frontal bone fracture was statistically significant. The association of frontal posterior wall fractures with pneumocephalus and parenchymal contusion was found to be statistically significant. In addition, the association of craniocerebral injuries were evaluated and statistically significant ones were determined.

Conclusion

The presence of maxillofacial fractures in patients presenting with head trauma increases mortality and morbidity. Craniocerebral injuries can be life-threatening and delay the treatment of facial fractures. Upper facial bone fractures are significantly more common in craniocerebral injuries.

Value of a lateral inferior pedicle flap in Draf IIb for recurrent frontal sinus diseases: a prospective study

Purpose

The Draf IIb procedure allows the widest unilateral access to the frontal sinus in a minimally invasive fashion, with efficiency and safety comparable to the Draf III. However, this technique is still associated with a high postoperative stenosis rate. The exposure of drilled bone induces osteitis predisposing to scarring and neo-osteogenesis causing ostium restenosis. We developed a novel lateral inferior pedicle flap (LIPF) to cover the exposed bone and prevent restenosis during Draf IIb. We aimed to describe our technique.

Methods

Adult patients requiring a Draf IIb for unilateral recurrent frontal sinus disease were prospectively enrolled. A LIPF technique was systematically performed. Demographics and complications were recorded. The primary outcome measure was neo-ostium patency at 12 months. In patients with chronic rhinosinusitis (CRS), the clinical control rate was evaluated at 12 months.

Results

59 patients underwent the Draf IIb with LIPF technique from 2013 to 2021. 49 patients (20 women/29 men, median age of 48.0 years) completed at least 12 months of follow-up (median 41.0 months, range 12–100 months). Indications included recalcitrant CRS (n = 32), inverted papilloma (n = 9) and frontal mucocele (n = 8). Overall, the neo-ostium remained patent at 12 months in all patients, and the clinical control rate of 32 patients with recalcitrant CRS at 12 months was 100%. No main complications were recorded.

Conclusion

The LIPF technique was associated with a high rate of success for a Draf IIb.

Frontal Sinus Fractures: A Contemporary Approach in the Endoscopic Era

Although frontal sinus fractures are relatively uncommon, the potential for long-term morbidity is significant. Management strategies remain controversial due to a lack of strong clinical evidence. Despite a paucity of strong literature, a logical treatment algorithm is presented based on the structural integrity of three anatomic parameters: anterior table, frontal sinus outflow tract, and the posterior table/dura. The literature supports a paradigm shift from open surgical management to a more conservative treatment algorithm emphasizing observation and minimally invasive endoscopic techniques. Long-term follow-up for complex frontal sinus injuries is critical.

A new aesthetic pretrichial approach for upper third-facial fractures and pathologies: The "Crown incision"

BACKGROUND

The coronal incision represents the cornerstone for the treatment of upper-third maxillofacial pathologies. However, this approach leaves long scars that in numerous patients, it can cause extensive surrounding alopecia and sensory skin deficits. This clinical evidence prompted the authors to propose a full pretrichial incision, the crown incision, in order to overcome these drawbacks.

METHODS

A retrospective study was performed to investigate and report the aesthetic and functional outcomes of 15 patients treated with this new approach.

RESULTS

In the postoperative period, no major or minor complications were detected. The aesthetic evaluation of the scar by the operator and the patient showed overlapping results. The overall rating was 2.93 for the patient and 2.87 for the surgeon, on a scale from 0 (as normal skin) to 10 (very different from normal skin). The recovery of sensitivity in the innervation territories of the supratrochlear and supraorbital nerves was found to be complete in 14 patients. In one case, the sharp/blunt discriminative sensitivity was absent in all three points assessed.

CONCLUSIONS

This study showed the crown incision to be a safe approach with an optimal recovery of scalp sensitivity and excellent aesthetic results even in bald patients. Therefore, it can be considered a valid aesthetic and effective alternative to the classic coronal approach and should form part of the craniomaxillofacial surgical armamentarium.

Above and Beyond: Periorbital Suspension for Endoscopic Access to Difficult Frontal Sinus Pathology

OBJECTIVES/HYPOTHESIS

The periorbital suspension (PS) is an advanced adjunctive technique performed during endoscopic approaches to frontal sinus pathology that would be too far lateral or superior to address using traditional endoscopic transnasal approaches. The objectives of this study are to characterize the utility of this technique for frontal sinus pathology, determine anatomic limitations, and assess clinical outcomes following surgical treatment.

STUDY DESIGN

Prospective case series.

METHODS

Patient data including demographics, etiology, technique, complications, and clinical follow-up were collected. Preoperative computed tomography scans were reviewed for maximum lateral and superior extent of pathology, supraorbital recess height, anterio-posterior (AP) diameter of the frontal sinus, interorbital distance, and orbital-first olfactory neuron distance.

RESULTS

The PS approach was used in 30 surgeries (29 patients) for cerebrospinal fluid leaks (n = 5), benign tumors (n = 17), malignant tumors (n = 5), allergic fungal sinusitis (n = 2), and mucocele (n = 1) between 2018 and 2020. Approaches included 15 Draf IIB and 15 Draf III frontal sinusotomies. All pathology was surgically accessible using the PS approach and there were no intraoperative or postoperative complications. Postoperative follow-up was 11.7 ± 7.6 months. Mean recorded measurements (in mm) were as follows: maximum lateral extent -15.0 ± 7.7, superior extent 21.2 ± 7.7 in surgical plane and 20.9 ± 9.8 in the vertical plane, supraorbital recess height -2.6 ± 1.9, AP frontal sinus diameter -13.2 ± 4.7, interorbital distance -29.8 ± 5.4, and orbital-olfactory neuron distance -14.8 ± 2.9.

CONCLUSIONS

The PS technique can be safely and successfully utilized to provide endoscopic endonasal access to lateral and superior frontal sinus pathology.

LEVEL OF EVIDENCE

4 Laryngoscope, 2021.

Frontal Sinus Fracture Management Meta-analysis: Endoscopic Versus Open Repair

INTRODUCTION

Frontal sinus fracture management continues to be a point of controversy. Many systematic reviews have been done, but meta-analyses comparing various approaches to frontal sinus fractures are scarce. Our study focuses on open surgical repair versus endoscopic repair of frontal sinus fractures.

MATERIALS AND METHODS

A MEDLINE search was performed to identify prospective RCTs, non-RCTs, guidelines, case-control, and observational studies published in English before April 2019. Search terms included (1) frontal sinus, (2) skull fractures, (3) frontal bone, alone or in combination. An in-depth review was conducted to identify publications relevant to this analysis. Studies that included pediatric patients, case reports, and review articles without original data were excluded. Postoperative outcomes included were cosmesis, sinus function, mucocele, sinusitis, cerebrospinal fluid leak, meningitis, and brain abscess. Meta-analysis of proportions, Fisher exact test, and relative risks were calculated.

RESULTS

Seven studies were ultimately included in the meta-analysis. The assessment of heterogeneity indicated that the studies are comparable. The weighted outcome proportions of patients with postoperative cosmetic deformity and mucocele are found to be significantly higher in patients who underwent open repair compared to patients who received endoscopic treatment. No significant difference between the 2 intervention groups in regards to the other outcomes.

CONCLUSION

Based on this meta-analysis, no definitive conclusions regarding superiority of one approach over the other can be made. There are currently no universally accepted algorithms that aid in the decision to proceed with either approach. It is likely that these 2 techniques will come to serve different roles in treatment, as they can each be utilized to achieve different goals. At this time, the only recommendation is to proceed with whichever technique can be safely performed based upon surgeon experience and fracture pattern.

Frontal Sinus Fractures: A Review on Etiology and Management Emphasizing Minimally Invasive and Endoscopic Techniques

ABSTRACT

In spite of a long and tortuous history of the acute management of frontal sinus fractures, current optimal management remains steeped in controversy. These fractures are frequently produced by excessive forces and are often accompanied with other injuries. However, disruption of the nasofrontal duct persists as essential to maintain proper sinus function and should guide current management. Although there has never been any distinct procedure defining optimal outcomes, proper treatment is contingent on precise diagnosis culled from a complete history, physical examination, and imaging studies. This is further augmented by the surgeon's intraoperative findings. Reconstruction will ultimately rest on the degree of disruption of the anterior and posterior sinus walls, as well as the status and function of the nasofrontal ducts. For these reasons, current management continues to be challenging and evolving. Thus, this review will discuss the etiology and clinical presentation of frontal sinus fractures, the current complications arising in the subject, and the evolution of treatment options towards a more conservative and endoscopic approach to care.

Reconstructive Management of Gunshot Wounds to the Frontal Sinus: An Urban Trauma Center's Perspective

INTRODUCTION

In the last decade, we have seen a steady increase in the incidence of frontal sinus trauma due to gunshot wounds and a decrease in motor vehicle trauma. Penetrating gunshot wounds to the frontal sinus present a unique challenge to the reconstructive surgeon because they require careful consideration of the management principles of plastic surgery. Despite previous reviews on frontal sinus trauma, there are no studies examining the management techniques of frontal sinus fractures due specifically to gunshot wounds. In this study, we aim to retrospectively evaluate the use of a variety of tissue flaps in intervention and associated outcomes.

METHODS

A retrospective chart review was completed on all patients with gunshot wound(s) to the frontal sinus from January 2010 to January 2018 at a single institution. The patients were classified based on the fracture pattern (anterior vs posterior table vs both), degree of displacement, presence of nasofrontal outflow tract injury, and evidence of cerebrospinal fluid leak. Patients were then stratified according to the type of reconstruction performed (cranialization, obliteration and need for free flap) and evaluated for major and minor complications after reconstruction.

RESULTS

In this study, we present outcome data from 28 cases of frontal sinus trauma due to gunshot wounds. There was a statistically significant difference (P = 0.049) in the type reconstructive strategy employed with each type of flap, with pericranial flaps primarily used in cranialization, temporal grafts were more likely to be used in obliteration, and free flaps were more likely to be used in cranialization. The overall major complication rate was 52% (P = 0.248), with the most common acute major complication was cerebrospinal fluid leak (39%) and major chronic was abscess (23.5%).

CONCLUSIONS

This report explores the management of frontal sinus trauma and presents short-term outcomes of treatment for penetrating gunshot wounds at a tertiary referral center.

Traumatic Frontal Sinus Fractures Management: Experience from High-Trauma Centre

Objective

Analysis of our traumatic brain injury data, reviewing current literatures and assessing planning valuable decision making in frontal sinus fracture for young neurosurgeons.

Methods

Hospital data base for head trauma was retrieved after board permission for retrospective analysis of cases admitted from 2010-2020. Patients with frontal sinus fractures and head trauma were identified according to a flow chart. Variables of the study included patients' demographics, mechanism of injury, incidence of cerebrospinal fluid (CSF) leakage, types of associated injuries, imaging findings and operative techniques.

Results

Three-hundred eighty two patients were eligible to be screened in our study and represented the sample size under investigations in the following sections, 206 (53.9%) of patients were treated conservatively while 176 patients (46.1%) were identified as having an indication for surgical intervention. Eighty-four percent of patients were males. The mean age was 36.2±9.4 years (14-86 years). Depressed skull fracture was commonly associated injury (17.61%). Leakage of CSF was found in 32.95% of patients.

Conclusion

Frontal sinus fracture is not an easy scenario. It harbors many proportions and deliver many varieties in which, deep understanding of anatomy, naso-frontal outflow tract status, CSF leakage and neurological injury are of important points in decision. Our institutional algorithm provide rapid, accessible and applicable treatment protocol for resident and young neurosurgeons which minimizes consultations of other specialties.

Repair of frontal sinus fractures: clinical and radiological long-term outcomes

OBJECTIVE

The long-term clinical and radiological outcomes of patients surgically treated for frontal sinus fracture were assessed.

METHODS

A retrospective, single-centre analysis was conducted of patients treated for frontal sinus fracture in a tertiary trauma centre between 2000 and 2017. Patients who underwent surgical repair for frontal sinus fracture followed by clinical and radiographical evaluation for at least six months were included.

RESULTS

Of 338 patients admitted with frontal sinus fracture, 77 were treated surgically. Thirty patients met the inclusion criteria for long-term follow-up. The average follow-up duration was 37 months (range, 6-132 months). Reconstruction, obliteration and cranialisation of the frontal sinus fracture were performed in 14, 9 and 7 patients, respectively. Two patients with a reconstructed frontal sinus and one with an obliterated frontal sinus developed mucoceles. One patient developed forehead disfigurement following obliteration.

CONCLUSION

Long-term complications of frontal sinus repair using the chosen repair techniques are rare, but patients need to be made aware of these potential complications.

Safety and Efficacy of the Draf IIb Procedure: A Systematic Review

OBJECTIVES

To systematically review the literature to evaluate the indications, safety, and efficacy of the Draf IIb procedure and to evaluate the added advantages of technical factors such as stents and flaps.

DATA SOURCES

Articles published until July 2019 on Medline and Cochrane databases.

REVIEW METHODS

After a systematic review based on the 2018 PRISMA guidelines was conducted, 26 of 1533 articles were included and reviewed for indications of Draf IIb; surgical technique; use of flaps, stents, grafts, or mitomycin; complications during and after surgery; and success or recurrence rate.

RESULTS

The main indication for Draf IIb was chronic frontal rhinosinusitis (61.82%). The postoperative patency rate was 87.85%. When flaps/grafts were applied, the rate was 93.5%, but their added value was not statistically significant. Stents could be an alternative for revision surgery. Treating frontal pathologies other than chronic rhinosinusitis was also satisfying. Safety was comparable to Draf III: no perioperative complications were reported, only a few postoperative ones (eyelid ecchymosis and periorbital cellulitis in 0.2% of the cases, hyposmia in 1.55%).

CONCLUSION

When properly indicated, Draf IIb frontal drilling is a safe and highly effective surgical technique for frontal pathology treatment, with efficiency and safety comparable to the Draf III, making it a valid option when a bilateral approach is not needed. More studies are required to confirm the added values of flaps, grafts, and stents.

Compartmentalization: An Open Technique for Frontal Sinus Repair and Preservation-Description of Technique and Early Case Series

Background  Cranialization or obliteration is widely accepted intervention for traumatic or intentional breach of the frontal sinus. These techniques, however, result in the loss of frontal sinus function and have a persistent risk of cerebrospinal fluid (CSF) leak and mucocele. Compartmentalization is an open technique for repair of the frontal sinus using allograft onlay and a vascularized periosteal flap that allows for preservation of frontal sinus function. Objective  The main objective of this article is to describe the technique for compartmentalization of the frontal sinus and demonstrate its efficacy and complication rate with an early patient series. Methods  Our technique includes the following key components: harvesting of a pedicled periosteal flap, frontal sinus repair through a bifrontal craniotomy with minimal mucosa removal, ensuring the patency of the nasal frontal outflow tract, and separation of the brain from the frontal sinus with a dual layer of periosteum and allograft. All cases of frontal sinus repair using the compartmentalization technique at our institution were reviewed. Charts were reviewed for CSF leak, mucocele, and other complications. Results  Twenty-three patients underwent the described frontal sinus repair technique 17 for tumor and 6 for trauma. There were no CSF leaks and no mucoceles. One patient experienced postoperative anemia and a "parameningeal reaction" that were managed with a short course of antibiotics. Conclusions  Compartmentalization, due to its sinus preservation and low complication rate, represents a meaningful step forward in neurosurgical technique for open frontal sinus repair. However, long-term outcomes are necessary to fully evaluate risk of mucocele.

Is there still a role for cranialization in modern sinus surgery?

PURPOSE OF REVIEW

To give an overview of recently published literature on the indications and use of cranialization of the frontal sinuses.

RECENT FINDINGS

Recent studies on cranialization have evaluated its role in frontal sinus fractures, inflammatory disease, and tumors involving both the frontal sinus and anterior cranial fossa. Currently, a more conservative approach is favored with traumatic injury to the frontal sinus outflow tract, with multiple studies demonstrating outflow recanalization with observation alone. Similarly, advancements in endoscopic sinus surgical approaches allow the many posterior table fractures to be managed without cranialization. Severe inflammatory disease of the frontal sinus including giant mucoceles with frontal lobe compression have successfully been managed without cranialization in multiple studies suggesting an endoscopic surgical approach can be favored in these settings. Both benign and malignant tumors of the frontal sinus are managed without cranialization with select cases favoring an open approach with cranialization depending on tumor location. Malignant tumors of the frontal sinus are more likely to require cranialization as oncologic resection including margins can lead to large dural defects with significant tissue loss, which is unfavorable for more conservative reconstructive options.

SUMMARY

Cranialization remains a necessary and indicated procedure in the appropriate clinical circumstances. A more conservative approach to frontal sinus fractures is warranted, with recent literature supporting similar outcomes and less morbidity. Inflammatory disease of the frontal sinus including giant mucoceles with frontal lobe compression can be managed without cranialization. Although most benign tumors can be resected via endoscopic approaches, cranialization remains a mainstay as part of the reconstructive plan after oncologic resection of malignant tumors involving the frontal sinus.

Treatment of Frontal Sinus Osteomyelitis in the Age of Endoscopy

OBJECTIVE

Frontal sinus osteomyelitis is a severe complication which can result from chronic rhinosinusitis, trauma, or as a complication of reconstruction or obliteration of the frontal sinus. The objective of the current study is to evaluate the contemporary management of frontal sinus osteomyelitis in light of recent advancements in endoscopic surgical techniques.

METHODS

Review of a prospectively collected database of patients with frontal sinus pathology was performed from 2008-2020. Data from individuals with frontal sinus osteomyelitis was collected including demographics, etiology, surgical technique, adjunctive medical treatments, complications, and clinical follow up.

RESULTS

Sixteen patients (average age 48.3, range 8-84) were included in the study. An open approach was utilized in 6 patients (2 osteoplastic flaps, 3 Reidel procedures, 1 cranialization). Seven patients underwent completely endoscopic approaches (3 Draf IIB, 4 Draf III), while 3 individuals had combined procedures (Lynch with Draf III, osteoplastic flap + Draf III, fistula excision + Draf IIb). All patients received 6 weeks of antibiotics. Average clinical follow up was 24.4 months with no patients requiring revision procedures.

CONCLUSION

Endoscopic, endoscopic-assisted, and open approaches were utilized successfully in the current series of patients with osteomyelitis of the anterior table of the frontal sinus. While the progression of endoscopic techniques allows an additional surgical treatment option, it is important to select patients appropriately as open procedures continue to have an important role in the treatment algorithm.

Endoscopic management of frontal sinus diseases after frontal craniotomy: a case series and review of the literature

PURPOSE

To evaluate frontal sinus complications developed after previous external craniotomies requiring frontal sinus reconstruction and their treatment with an endoscopic approach.

METHODS

We retrospectively evaluated 22 patients who referred to Sant'Orsola-Malpighi University Hospital and Bellaria Hospital (Bologna, Italy) between 2005 and 2017. All patients presented with frontal sinus disease after frontal craniotomy with sinus reconstruction performed to treat various pathological conditions. We reported our experience in the endoscopic management of such complications and we reviewed the current literature concerning the endoscopic treatment of these conditions.

RESULTS

In total, 14 frontal mucoceles, 4 cases of chronic frontal sinusitis, 2 mucopyoceles and 2 fungus ball of the frontal sinus were identified. Endoscopic surgical treatment included 7 DRAF IIa, 1 DRAF IIb, 11 DRAF III and 3 DRAF IIc (modified DRAF III) approaches. The success rate of the surgical procedure was 86% (19/22 patients). Recurrence of the initial pathology occurred in three patients (14%) requiring a conversion of previous frontal sinusotomy into a DRAF III sinusotomy.

CONCLUSION

Frontal sinusopathy can be a long-term complication following craniotomies and may lead to potentially severe pathological conditions, such as mucoceles and frontal sinus inflammation. Its management is still debated and requires recovery of the patency of nasal-frontal route. Our study confirms that the endoscopic endonasal approach may offer a valid solution with low morbidity avoiding re-opening of the craniotomic access. For selected cases, endoscopic approach could also be performed simultaneously to craniotomy as a combined surgery to reduce the risk of short- and long-term complications. Long-term follow-up is mandatory in patients with a history of opened and reconstructed frontal sinus and should include imaging and endoscopic outpatient evaluation.

Frontal sinus fracture management: a systematic review and meta-analysis

A systematic review of the frontal sinus fracture management literature was undertaken to document measurable outcomes, with emphasis on complications associated with the various treatment strategies. A comprehensive electronic search was undertaken in October 2018. Randomized controlled trials (RCT), controlled clinical trials, retrospective and prospective studies describing the management of frontal sinus fractures and complications were included. Twenty-four publications were included: one reporting a prospective RCT and 23 reporting consecutive case series studies (four prospective, 19 retrospective). These included 2388 patients (84.1% male, average age 23-43 years); 50.7% of cases were due to motor vehicle accidents and 61.8% had a concomitant intracranial injury. There were six categories for anterior table reconstruction, three endoscopic surgery categories, 11 for obliteration, and six for cranialization. Forest plots demonstrating complications based on the Clavien-Dindo classification of 1 ('low') and >3 ('high') were determined for total, early, and late complications, with heterogeneous effect sizes. Fractures with a nasofrontal outflow tract (NFOT) injury without obstruction can be treated with reconstruction if displaced, or managed conservatively if undisplaced. Obliteration and cranialization should be considered when there is obstruction of the NFOT. A computed tomography scan should be performed at 6 months to evaluate re-ventilation of the sinus. Endoscopic sinus surgery is a reasonable salvage re-ventilation procedure.

Frontal sinus fractures and cerebrospinal fluid leaks: a change in surgical paradigm

PURPOSE OF REVIEW

Traditionally, frontal sinus trauma has been treated using open incisions to access the anterior and/or posterior table. Mounting evidence indicates frontal sinus trauma can be managed using an endoscopic endonasal approach (EEA) with less morbidity. Such an approach permits preservation of a functional sinus and less reliance on computed tomography for postoperative follow up. The goal of this article is to highlight a shift in paradigm away from open approaches using external incisions towards an EEA to repair cerebrospinal fluid (CSF) leaks and fractures of the frontal sinus.

RECENT FINDINGS

In a prospective case series of 46 patients undergoing EEA to frontal sinus fractures, 41 patients had active CSF leaks arising from the posterior table of the frontal sinus. A successful endoscopic repair was achieved in 97.6% with only one patient requiring revision Draf IIB surgery. Anterior table fractures were also successfully reduced with excellent cosmesis.

SUMMARY

Endoscopic repair of frontal sinus fractures and CSF leaks is effective and well tolerated. In select patients, it is the preferred treatment as it maintains normal sinus structure and function, minimizing both early and late complications.

ICAR: endoscopic skull-base surgery

BACKGROUND

Endoscopic skull-base surgery (ESBS) is employed in the management of diverse skull-base pathologies. Paralleling the increased utilization of ESBS, the literature in this field has expanded rapidly. However, the rarity of these diseases, the inherent challenges of surgical studies, and the continued learning curve in ESBS have resulted in significant variability in the quality of the literature. To consolidate and critically appraise the available literature, experts in skull-base surgery have produced the International Consensus Statement on Endoscopic Skull-Base Surgery (ICAR:ESBS).

METHODS

Using previously described methodology, topics spanning the breadth of ESBS were identified and assigned a literature review, evidence-based review or evidence-based review with recommendations format. Subsequently, each topic was written and then reviewed by skull-base surgeons in both neurosurgery and otolaryngology. Following this iterative review process, the ICAR:ESBS document was synthesized and reviewed by all authors for consensus.

RESULTS

The ICAR:ESBS document addresses the role of ESBS in primary cerebrospinal fluid (CSF) rhinorrhea, intradural tumors, benign skull-base and orbital pathology, sinonasal malignancies, and clival lesions. Additionally, specific challenges in ESBS including endoscopic reconstruction and complication management were evaluated.

CONCLUSION

A critical review of the literature in ESBS demonstrates at least the equivalency of ESBS with alternative approaches in pathologies such as CSF rhinorrhea and pituitary adenoma as well as improved reconstructive techniques in reducing CSF leaks. Evidence-based recommendations are limited in other pathologies and these significant knowledge gaps call upon the skull-base community to embrace these opportunities and collaboratively address these shortcomings.

What Is the Role of the Endoscope in the Sinus Preservation Management of Frontal Sinus Fractures?

PURPOSE

The management of frontal sinus fractures has remained controversial. The present study investigated the role of minimally invasive endoscopic surgery in a sinus preservation treatment protocol and described the ideal approach for each frontal sinus fracture type.

PATIENTS AND METHODS

We performed a prospective cohort study of patients with multiple frontal sinus fracture types. Patient demographic data, including age, gender, and cause of the fracture, were recorded. Four main management methods were proposed. Group A underwent observation only, group B underwent reduction and fixation of the anterior table, group C underwent endoscopic management of the frontal sinus outflow tract (FSOT), and group D underwent cranialization with an assessment of FSOT. The outcome measurements were the correction of the clinical deformity, which was determined by comparison of the preoperative and postoperative images, and the patent frontal sinus drainage, which was measured on the postoperative radiologic sagittal and coronal views of the frontal recess. The long-term outcomes were confirmed by the absence of long-term complications on postoperative follow-up examinations. Statistical analysis and comparisons were performed using SPSS software (IBM Corp, Armonk, NY).

RESULTS

A total of 60 patients (52 men, 8 women; mean age, 29.5 ± 8 years) were included in the present study. Of the 60 patients, 20 were in group A, 20 in group B, 16 in group C, and 4 in group D. All 60 patients had undergone correction of the deformity and had a patent FSOT postoperatively. No long-term complications were encountered in the follow-up period (median, 24 months; range, 12 to 36 months).

CONCLUSIONS

Endoscopic evaluation of the FSOT is of great importance in the surgical management of frontal fractures, because it allows for sinus preservation. The outcomes achieved in the present study were the result of selecting the right management plan for each fracture type.

[Modern aspects of surgical treatment of nasal liquorrhea with localization of defect in frontal sinus]

Defects localized in the frontal sinus are difficult for surgical treatment, since there is a large number of anatomical variations in the structure of the naso-frontal canal and the sinus itself. With the development of endoscopic technology and paying attention to the modern tendency of minimal invasive surgery, new invasive approaches to reach frontal sinus, such as endoscopic approach according to Draf I-III and combined approaches were developed and put into practice.

OBJECTIVE

To summarize and to analyze the results of treatment of nasal liquorrhea with localization of the defect in the frontal sinus using endoscopic endonasal and combined intra-extranasal approaches.

MATERIAL AND METHODS

A retrospective analysis of a series of 43 cases of nasal liquorrhea with a frontal sinus defect being treated at the NMRCN Burdenko during the period from 2001 to 2017. To select access, a classification of frontal sinus defects according to their localization was developed. The analysis of demographic and clinical data of patients, as well as intraoperative and postoperative data analysis were done.

RESULTS

In the series of 43 patients, endoscopic endonasal approach was performed in 28 (65%) cases. Combined approach was performed at 15 (35%) patients. The success rate of plastic surgery with endoscopic endonasal approach was 86% (24 of 28), with combined approach - 93% (14 of 15).

CONCLUSION

Endoscopic endonasal and combined approaches are the methods of choice for plastic surgery of defects of the skull base in the frontal sinus as they are effective and safe. The choice of approach depends on anatomical features of the frontal sinus and on the localization of defect.

Contemporary management of frontal sinus fractures

PURPOSE OF REVIEW

Frontal sinus fracture management is evolving. This article will highlight recent literature and provide an evidence-based algorithm in the contemporary management of frontal sinus fractures.

RECENT FINDINGS

The role of transnasal endoscopic treatment of frontal sinus fractures has expanded to include fracture reduction and posterior table reconstruction. Evidence continues to support the safety of nonoperative management in select frontal sinus outflow tract fractures.

SUMMARY

The management of frontal sinus fractures with frontal sinus outflow tract injury continues to evolve with a trend toward observation and minimally invasive approaches. Restoration of the frontal sinus outflow tracts with transnasal endoscopic techniques is being used increasingly in the acute and delayed setting. For severe fractures, the role of conservative treatment paradigms requires further research.

Frontal Sinus Preservation During Cerebrospinal Fluid Leak Repair

BACKGROUND

To validate the repair of frontal sinus cerebrospinal fluid (CSF) leaks with preservation of frontal sinus drainage pathway (FSDP), independently of the approach used, and to establish the indications and limits of the endoscopic approach.

METHODS

A retrospective evaluation of patients undergoing surgery for frontal sinus CSF leaks was performed. Demographics, indications for both endoscopic/combined endoscopic and open approaches, complications, methods for maintaining FSDP, and perioperative outcomes were examined.

RESULTS

Fifty-three patients (average age 45 years) with frontal sinus CSF leaks were treated surgically from 2000 to 2018. All CSF leak repairs were successful at the 1st attempt with a mean follow-up of 76.8 months (range 4-227 months). Etiology was spontaneous (14), traumatic (26), and iatrogenic (13). In 17 patients, a purely endoscopic approach was performed, while an endoscopic endonasal orbital transposition procedure was added in 4 out of this group. In 23 patients, a combined endoscopic and osteoplastic procedure was employed, while in 13 patients a combined craniotomy and endoscopic procedure was performed. All frontal sinuses remained patent except for 2 cranialization patients.

CONCLUSION

With contemporary endoscopic instrumentation and techniques, endoscopic closure of frontal sinus CSF leaks even in the far superolateral wall is feasible in selected patients. However, the surgeon should consider the option of combining an external approach when required. Preserving the FSDP should be the main aim regardless of the approach.

Frontal Sinus Fractures: Evolving Clinical Considerations and Surgical Approaches

Frontal sinus fractures are an uncommon injury of the maxillofacial skeleton, and account for 5-15% of all maxillofacial fractures. As the force of impact increases, fractures may extend beyond the anterior table to involve adjacent skull, posterior table and frontal sinus outflow tract (FSOT). Fractures at these subsites should be evaluated independently to assess the need for and type of operative intervention. Historically, these fractures were managed aggressively with open techniques resulting in obliteration or cranialization. With significant injuries, these approaches are still indispensable. However, the treatment of frontal sinus fractures has changed dramatically over the past half-century, and recent case series have demonstrated favorable outcomes with conservative management. Concurrently, there has been an increasing role of minimally invasive endoscopic techniques, both for primary and expectant management, with a focus on sinus preservation. Here, we review the diagnosis and management of frontal sinus fractures, with an emphasis on subsite evaluation. Following a detailed assessment, an appropriate treatment strategy is selected from a variety of open and minimally invasive approaches available in the surgeon's armamentarium.

Risk of frontal sinus anterior table fractures after craniofacial trauma and the role of anatomic variations in frontal sinus size: A retrospective case-control study

INTRODUCTION

Purpose of this study was to evaluate a probable risk of frontal sinus size for traumatic depressed anterior table fractures in patients with similar forehead trauma.

METHODS

We conducted a retrospective case-control study with a case group of consecutive treated patients with displaced frontal sinus anterior table fractures. The control group was randomly sampled from patients who presented with a blunt forehead trauma in our institution's emergency unit. In computed tomography data sets, all patients' frontal sinus size was categorized by Guerram's classification that is defined as aplasia, hypoplasia, medium-size and hyperplasia. Odds for prevalence of the sinus types as well as sinus total width and height were compared between both groups.

RESULTS

In total, 47 cases and 93 controls were identified. Hyperplasia in the case group had an odds ratio of 46:1 (p < 0.001) compared to the controls. Mean sinus width (73 mm vs. 46 mm; p < 0.001) and sinus height (30 mm vs. 15 mm; p < 0.001) were larger in the case group.

CONCLUSION

Depressed traumatic fractures of the anterior table are an injury with a high risk specific for enlarged frontal sinus sizes. Anatomy is the predictive factor for this mode of craniofacial trauma.

Endonasal endoscopic management of frontal sinus cerebrospinal fluid leak

BACKGROUND

A frontal sinus leak is uncommon and is seen in ∼15% of cases of patients with cerebrospinal fluid (CSF) rhinorrhea. Now, endonasal endoscopic techniques have been reported to reconstruct skull base defects in the frontal sinus with a favorable outcome.

OBJECTIVE

To review our experience in the repair of frontal sinus CSF leaks through an endonasal endoscopic approach.

METHODS

Twenty-four patients with a frontal sinus leak who underwent endonasal endoscopic repair entered the study. Clinical presentation, location, frontal sinusotomy, graft material, follow-up, and frontal sinus status were evaluated.

RESULTS

Among >100 cases of surgically repaired CSF rhinorrhea, the frontal sinus was the site of the leak in 24 patients (mean age, 28.9 years; mean follow-up, 22 months). The etiology consisted of spontaneous leak and traumatic leak; whereas patients with skull base reconstruction after removal of tumor were excluded. Surgical approaches included Draf IIb, Draf III, Draf IIa in 20, 3, and 1 patients, respectively. Free autografts as two-layer inlay fat-muscle and onlay fascia lata were used in the majority of patients. A success rate was achieved in 95.83% of the patients.

CONCLUSION

Endonasal endoscopic repair of a frontal sinus leak was a successful procedure, with a low failure rate and minimal morbidity.

Porcine small intestine submucosal grafts improve remucosalization and progenitor cell recruitment to sites of upper airway tissue remodeling

BACKGROUND

To better understand upper airway tissue regeneration, the exposed cartilage and bone at donor sites of tissue flaps may serve as in vivo "Petri dishes" for active wound healing. The pedicled nasoseptal flap (NSF) for skull-base reconstruction creates an exposed donor site within the nasal airway. The objective of this study is to evaluate whether grafting the donor site with a sinonasal repair cover graft is effective in promoting wound healing.

METHODS

In this multicenter, prospective trial, subjects were randomized to intervention (graft) or control (no graft) intraoperatively after NSF elevation. Individuals were evaluated at 2, 6, and 12 weeks postintervention with endoscopic recordings. Videos were graded (Likert scale) by 3 otolaryngologists blinded to intervention on remucosalization, crusting, and edema. Scores were analyzed for interrater reliability and cohorts compared. Biopsy and immunohistochemistry at the leading edge of wound healing was performed in select cases.

RESULTS

Twenty-one patients were randomized to intervention and 26 to control. Subjects receiving the graft had significantly greater overall remucosalization (p = 0.01) than controls over 12 weeks. Although crusting was less in the small intestine submucosa (SIS) group, this was not statistically significant (p = 0.08). There was no overall effect on nasal edema (p = 0.2). Immunohistochemistry demonstrated abundant upper airway basal cell progenitors in 2 intervention samples, suggesting that covering grafts may facilitate tissue proliferation via progenitor cell expansion.

CONCLUSION

This prospective, randomized, controlled trial indicates that a porcine SIS graft placed on exposed cartilage and bone within the upper airway confers improved remucosalization compared to current practice standards.