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Knoedler L, Baecher H, Kauke-Navarro M, Prantl L, Machens HG, Scheuermann P, Palm C, Baumann R, Kehrer A, Panayi AC, Knoedler S. Towards a Reliable and Rapid Automated Grading System in Facial Palsy Patients: Facial Palsy Surgery Meets Computer Science. J Clin Med 2022; 11:jcm11174998. [PMID: 36078928 PMCID: PMC9457271 DOI: 10.3390/jcm11174998] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/22/2022] Open
Abstract
Background: Reliable, time- and cost-effective, and clinician-friendly diagnostic tools are cornerstones in facial palsy (FP) patient management. Different automated FP grading systems have been developed but revealed persisting downsides such as insufficient accuracy and cost-intensive hardware. We aimed to overcome these barriers and programmed an automated grading system for FP patients utilizing the House and Brackmann scale (HBS). Methods: Image datasets of 86 patients seen at the Department of Plastic, Hand, and Reconstructive Surgery at the University Hospital Regensburg, Germany, between June 2017 and May 2021, were used to train the neural network and evaluate its accuracy. Nine facial poses per patient were analyzed by the algorithm. Results: The algorithm showed an accuracy of 100%. Oversampling did not result in altered outcomes, while the direct form displayed superior accuracy levels when compared to the modular classification form (n = 86; 100% vs. 99%). The Early Fusion technique was linked to improved accuracy outcomes in comparison to the Late Fusion and sequential method (n = 86; 100% vs. 96% vs. 97%). Conclusions: Our automated FP grading system combines high-level accuracy with cost- and time-effectiveness. Our algorithm may accelerate the grading process in FP patients and facilitate the FP surgeon’s workflow.
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Affiliation(s)
- Leonard Knoedler
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, 93053 Regensburg, Germany
- Correspondence: ; Tel.: +49-151-448-249-58
| | - Helena Baecher
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, 93053 Regensburg, Germany
| | - Martin Kauke-Navarro
- Department of Surgery, Division of Plastic Surgery, Yale School of Medicine, New Haven, CT 06510, USA
| | - Lukas Prantl
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, 93053 Regensburg, Germany
| | - Hans-Günther Machens
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technical University of Munich, 81675 Munich, Germany
| | - Philipp Scheuermann
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, 93053 Regensburg, Germany
| | - Christoph Palm
- Regensburg Medical Image Computing Lab, Ostbayrische Technische Hochschule Regensburg, 93053 Regensburg, Germany
| | - Raphael Baumann
- Regensburg Medical Image Computing Lab, Ostbayrische Technische Hochschule Regensburg, 93053 Regensburg, Germany
| | - Andreas Kehrer
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, 93053 Regensburg, Germany
| | - Adriana C. Panayi
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Samuel Knoedler
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, 93053 Regensburg, Germany
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technical University of Munich, 81675 Munich, Germany
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
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Fliss E, Yanko R, Zaretski A, Tulchinsky R, Arad E, Kedar DJ, Fliss DM, Gur E. Facial Nerve Repair following Acute Nerve Injury. Arch Plast Surg 2022; 49:501-509. [PMID: 35919546 PMCID: PMC9340172 DOI: 10.1055/s-0042-1751105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Background
Acute facial nerve iatrogenic or traumatic injury warrants rapid management with the goal of reestablishing nerve continuity within 72 hours. However, reconstructive efforts should be performed up to 12 months from the time of injury since facial musculature may still be viable and thus facial tone and function may be salvaged.
Methods
Data of all patients who underwent facial nerve repair following iatrogenic or traumatic injury were retrospectively collected and assessed. Paralysis etiology, demographics, operative data, postoperative course, and outcome were examined.
Results
Twenty patients underwent facial nerve repair during the years 2004 to 2019. Data were available for 16 of them. Iatrogenic injury was the common category (
n
= 13, 81%) with parotidectomy due to primary parotid gland malignancy being the common surgery (
n
= 7, 44%). Nerve repair was most commonly performed during the first 72 hours of injury (
n
= 12, 75%) and most of the patients underwent nerve graft repair (
n
= 15, 94%). Outcome was available for 12 patients, all of which remained with some degree of facial paresis. Six patients suffered from complete facial paralysis (50%) and three underwent secondary facial reanimation (25%). There were no major operative or postoperative complications.
Conclusion
Iatrogenic and traumatic facial nerve injuries are common etiologies of acquired facial paralysis. In such cases, immediate repair should be performed. For patients presenting with facial paralysis following previous surgery or trauma, nerve repair should be considered up to at least 6 months of injury. Longstanding paralysis is best treated with standard facial reanimation procedures.
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Affiliation(s)
- Ehud Fliss
- Department of Plastic and Reconstructive Surgery, Tel-Aviv Sourasky Medical Center, Affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Ravit Yanko
- Department of Plastic and Reconstructive Surgery, Tel-Aviv Sourasky Medical Center, Affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Arik Zaretski
- Department of Plastic and Reconstructive Surgery, Tel-Aviv Sourasky Medical Center, Affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Roei Tulchinsky
- Department of Plastic and Reconstructive Surgery, Tel-Aviv Sourasky Medical Center, Affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Ehud Arad
- Department of Plastic and Reconstructive Surgery, Tel-Aviv Sourasky Medical Center, Affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Daniel J Kedar
- Department of Plastic and Reconstructive Surgery, Tel-Aviv Sourasky Medical Center, Affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Dan M Fliss
- Department of Otolaryngology, Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Affiliated Tel-Aviv University, Tel Aviv, Israel
| | - Eyal Gur
- Department of Plastic and Reconstructive Surgery, Tel-Aviv Sourasky Medical Center, Affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
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Zourntou SE, Makridis KG, Tsougos CI, Skoulakis C, Vlychou M, Vassiou A. Facial nerve: A review of the anatomical, surgical landmarks and its iatrogenic injuries. Injury 2021; 52:2038-2048. [PMID: 34074487 DOI: 10.1016/j.injury.2021.05.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/09/2021] [Accepted: 05/16/2021] [Indexed: 02/02/2023]
Abstract
Facial nerve iatrogenic injuries are serious and can negatively affect the quality of life of the patients. Due to the properties of the nerve, the complications are devastating involving the aesthetic appearance and the function of the face. Moreover, the multiple branches of the nerve increase the risk of an iatrogenic injury making the detailed knowledge of the anatomical correlations around them critical. In this review, a meticulous analysis was performed including the surgical procedures posing the greater risk of an iatrogenic injury as well as the full description of all the reported anatomical landmarks involving the extracranial course of the facial nerve.
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Affiliation(s)
| | | | | | - Charalampos Skoulakis
- Otolaryngology Department Neurology & Sensory Organs, Faculty of Medicine, University of Thessaly, Larissa, Greece.
| | - Marianna Vlychou
- Radiology Department Clinical and Laboratory Research, Faculty of Medicine, University of Thessaly, Larissa, Greece.
| | - Aikaterini Vassiou
- Anatomy Department Morphology, Faculty of Medicine, University of Thessaly, Larissa, Greece.
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4
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Topolnitsky OZ, Askerov ED. Probability assessment of facial nerve injury in children and adolescents during the elective maxillofacial surgery. Pediatr Dent 2021. [DOI: 10.33925/1683-3031-2021-21-1-32-34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Relevance. Various factors can cause facial neuropathy. Iatrogenic facial nerve injury in childhood and adolescence is a complicated medical, psychological and legal problem. Risk assessment of the facial nerve injury during the elective maxillofacial surgeries is required depending on the localization of the procedure. The statistical assessment is very important for the evaluation of the possible iatrogenic facial neuropathy in children and adolescents during the elective maxillofacial surgeries.Materials and methods. 715 medical records for 2017 from the Department of Pediatric Maxillofacial Surgery of the MSUMD Clinical Center for Maxillofacial, Reconstructive and Plastic Surgery were analyzed.Results. There was a risk of injury to the trunk or branches of the facial nerve during surgery in 121 cases (16,9%) for the technical complexity of the surgical approach and the pathology location.Conclusions. There is a high risk of the facial nerve injury during the elective maxillofacial surgery in children and adolescents due to the complex anatomy of the area. Intraoperative neuromonitoring is recommended to prevent iatrogenic neuropathy of the facial nerve.
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Affiliation(s)
| | - E. D. Askerov
- A.I. Yevdokimov Moscow State University of Medicine and Dentistry
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Tamura T, Tanikawa R, Pirayesh A, Kinoshita Y, Ota N, Noda K, Kamiyama H. Modified micro-scissors as stimulation-dissection tool – Technical note. INTERDISCIPLINARY NEUROSURGERY 2020. [DOI: 10.1016/j.inat.2020.100774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Facial nerve neurorrhaphy due to unexpected facial nerve injury during parotid gland tumor surgery. Eur Arch Otorhinolaryngol 2020; 277:2315-2318. [PMID: 32215738 DOI: 10.1007/s00405-020-05931-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 03/16/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Unexpected facial nerve damage can occur during parotid gland tumor surgery. We sought to determine the incidence and treatment outcomes of unexpected facial nerve injuries in patients with parotid gland tumor surgery. METHODS We retrospectively enrolled in this study five patients, who underwent facial nerve neurorrhaphy due to unexpected facial nerve injury during parotid gland tumor surgery January 2012-August 2019. RESULTS There were five patients (0.008%) with unexpected facial nerve injuries during the parotid gland tumor surgery of 577 patients in our hospital for approximately 8 years. The most common injury site of facial nerve was the marginal mandibular branch (n = 3), followed by the buccal branch (n = 1), and the cervicofacial division (n = 1). In the case of unexpected facial nerve damage, our treatment is immediate primary neurorrhaphy and steroid treatment. Three patients of five recovered and two did not worsen immediately after surgery. CONCLUSION Unexpected facial nerve injury during parotid gland tumor surgery is extremely unfortunate. In this case, immediate primary neurorrhaphy and systemic steroids are recommended to restore facial function and reduce cosmetic deficits.
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