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https://www.readbyqxmd.com/read/28210407/a-single-center-review-of-radiologically-diagnosed-maxillofacial-fractures-etiology-and-distribution
#1
Jordan N Halsey, Ian C Hoppe, Mark S Granick, Edward S Lee
The etiology of fractures of the maxillofacial skeleton varies among studies, with motor vehicle accidents and assaults oftentimes the most common. The number of males outnumbers females throughout most studies. Fractures of the zygoma, orbit, and mandible are usually cited as most common fracture types. This study examines a single center's experience with regards to etiology and distribution of fractures. A retrospective review of all radiologically confirmed facial fractures in a level 1 trauma center in an urban environment was performed for the years 2000 to 2012...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28210401/zygomatic-intraosseous-hemangioma-case-report-and-literature-review
#2
REVIEW
David B Powers, Elda Fisher, Detlev Erdmann
Intraosseous hemangiomas are uncommon intrabony lesions, representing approximately 0.5 to 1% of all intraosseous tumors. Their description varies from "benign vasoformative neoplasms" to true hamartomatous proliferations of endothelial cells forming a vascular network with intermixed fibrous connective tissue stroma. These commonly present as a firm, painless swelling. Intraosseous hemangiomas present more commonly in females than in males and most likely occur in the fourth decade of life. The most common etiology of intraosseous hemangioma is believed to be prior trauma to the area...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28202219/virtual-reconstruction-of-midface-defects-using-statistical-shape-models
#3
Wiebke Semper-Hogg, Marc Anton Fuessinger, Stefan Schlager, Edward Ellis, Carl-Peter Cornelius, Florian Probst, Marc Christian Metzger, Steffen Schwarz
PURPOSE: This study evaluates the accuracy of a statistical shape model (SSM) for virtual fracture reconstruction of the lateral midface. MATERIALS AND METHODS: A uniform bony defect of the right zygoma was created. A virtual reconstruction was performed by using the standard procedure of mirroring the unaffected to the affected side (Group I) and by using the statistical model based on 178 pathologically unaffected CT scans (Group II). The accuracy of the statistical shape model was evaluated in comparison to the present mirroring protocol...
December 24, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28195897/base-of-skull-blocks-for-open-reduction-and-internal-fixation-of-faciomaxillary-fractures
#4
Sandeep Mehrotra, Sunil Anand
INTRODUCTION: Faciomaxillary fractures (FMF) occur in a significant proportion of trauma patients. Nearly all polytrauma patients and even those with isolated FMF are managed under general anesthesia for definitive management. We propose the use of regional nerve blocks as a safe and effective means for open reduction and fixation of isolated FMF. AIM AND OBJECTIVES: The aim is to evaluate the feasibility, effectiveness and safety of base of skull maxillomandibular and distal trigeminal nerve blocks in the management of FMF...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28045828/bilateral-malar-reconstruction-using-patient-specific-polyether-ether-ketone-implants-in-treacher-collins-syndrome-patients-with-absent-zygomas
#5
David C G Sainsbury, Alan George, Christopher R Forrest, John H Phillips
The authors performed bilateral malar reconstruction using polyether ether ketone implants in 3 patients with Treacher-Collins syndrome with absent, as opposed to hypoplastic, zygomata. These patient-specific implants were fabricated using computed-aided design software reformatted from three-dimensional bony preoperative computed tomography images. The first time the authors performed this procedure the implant compressed the globe resulting in temporary anisocoria that was quickly recognized intraoperatively...
December 30, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28032152/revision-surgery-for-zygoma-reduction-causes-indications-solutions-and-results-from-a-5-year-review-of-341-cases
#6
Sang Woo Lee, Yeon Woo Jeong, Yujin Myung
BACKGROUND: Many patients undergo a revision surgery after malar reduction, which is one of the most popular aesthetic surgeries in Asia. We reviewed the leading causes of revision for malar reduction surgery to establish proper indications for revision, seek adequate surgical strategies, and share the results from revision surgical cases. METHODS: A retrospective review was conducted involving 341 patients who underwent malar reduction reoperation between March 2010 and June 2015...
December 28, 2016: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28027253/evidence-based-medicine-evaluation-and-treatment-of-zygoma-fractures
#7
Craig B Birgfeld, Gerhard S Mundinger, Joseph S Gruss
LEARNING OBJECTIVES: After studying this article, the participant should be able to: 1. Diagnose zygomaticomaxillary complex fractures from physical examination and radiographic findings. 2. Plan the necessary surgical approaches for operative treatment of zygomaticomaxillary complex fractures depending on severity. 3. Understand the three-dimensional anatomy of the orbit and zygomaticomaxillary complex and the importance of the zygomaticosphenoid suture along the lateral orbital sidewall...
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28027174/anatomy-of-the-platysma-muscle
#8
Kun Hwang, Ji Yeon Kim, Jae Hyun Lim
The aim of this paper was to review the anatomy the platysma systematically.The term "platysma AND anatomy" was used to search PubMed and Scopus, producing 394 and 214 papers, respectively. After excluding 95 duplicate titles, 513 abstracts and 98 full papers were reviewed. Among these 98 papers, 83 were excluded and 5 were added. Ultimately, 20 papers were analyzed.The most common aging-related change of the platysma was shortening (70.7%), followed by thinning (25.2%). The platysma most commonly originated from the upper portion of thorax anterior to clavicle (67...
December 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28008459/biologic-behavior-of-hydroxyapatite-used-in-facial-augmentation
#9
Richard J Huggins, Bryan C Mendelson
INTRODUCTION: The recent finding that shrinkage of key areas of the facial skeleton contributes to the aging appearance of the face has prompted a search for the most appropriate bone-like implant material. Evidence that hydroxyapatite, in granular form, maintains volume in the long term supports its use in the correction of aging, in addition to its use in the correction of inherently deficient areas of the facial skeleton. The biologic response of hydroxyapatite needs to be fully understood for its use to be confidently recommended...
December 23, 2016: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28000410/a-comparative-morphological-study-of-the-jugal-and-quadratojugal-in-early-birds-and-their-dinosaurian-relatives
#10
Min Wang, Han Hu
The zygoma (called jugal bar) in modern birds accounts for a large portion of the ventral margin of the cranium. As a delicate and rod-like element, the jugal bar is functionally integrated into the avian cranial kinesis, a unique property that allows the beak to be elevated or depressed with respect to the braincase and thus distinguishes birds from all other modern vertebrates. Developmental studies show that the jugal bar of modern birds is formed by the fusion of the jugal and quadratojugal that are ossified from separated centers...
January 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28000408/ancestral-variations-in-the-shape-and-size-of-the-zygoma
#11
Anna C Oettlé, Fabrice P Demeter, Ericka N L'abbé
The variable development of the zygoma, dictating its shape and size variations among ancestral groups, has important clinical implications and valuable anthropological and evolutionary inferences. The purpose of the study was to review the literature regarding the variations in the zygoma with ancestry. Ancestral variation in the zygoma reflects genetic variations because of genetic drift as well as natural selection and epigenetic changes to adapt to diet and climate variations with possible intensification by isolation...
January 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28000404/the-anatomical-record-continues-our-special-issue-understanding-the-zygoma-now-exploring-the-extraordinary-twists-and-turns-of-its-evolutionary-journey-in-our-first-act-ii-of-a-special-issue
#12
Jeffrey T Laitman, Kurt H Albertine
No abstract text is available yet for this article.
January 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28000402/a-jugal-in-the-rough-the-evolutionary-importance-of-the-zygoma
#13
Jeffrey T Laitman
No abstract text is available yet for this article.
January 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28000398/toward-understanding-the-mammalian-zygoma-insights-from-comparative-anatomy-growth-and-development-and-morphometric-analysis
#14
Samuel Márquez, Anthony S Pagano, Jeffrey H Schwartz, Abigail Curtis, Bradley N Delman, William Lawson, Jeffrey T Laitman
The zygoma, or jugum, is a cranial element that was present in Mesozoic tetrapods, well before the appearance of mammals. Although as an entity the zygoma is a primitive retention among mammals, it has assumed myriad configurations as this group diversified. As the zygoma is located at the intersection of the visual, respiratory, and masticatory apparatuses, it is potentially of great importance in systematic, phylogenetic, and functional studies focused on this region. For example, the facial component of the zygoma and its contribution to a postorbital bar (POB) appear to be relevant to the systematics of a number of mammalian subclades, and the formation of a bony postorbital septum (POS) that separates the orbit from the infratemporal fossa is unique to, and thus potentially phylogenetically significant for uniting anthropoid primates, while the zygoma itself appears to serve to resist tension and bending forces during mastication...
January 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28000397/evolution-of-the-jugal-zygomatic-bones
#15
Paul C Dechow, Qian Wang
This issue of the Anatomical Record is the second of a two-volume set on the zygoma (also called the cheek bone, the zygomatic bone, the malar, or the jugal, the latter term being used in vertebrates other than mammals). The zygoma is an important component of the craniofacial skeleton, in which the zygoma is a connection between the midfacial and the cranial skeletons; has a functional role as the origin of one of the masticatory muscles, the masseter muscle, and several facial muscles; has been considered as an essential buttress of the facial skeleton for resisting masticatory forces; and has importance for determining phylogenetic relationships...
January 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27977493/a-rare-patient-with-facial-duplication
#16
Abdoljalil Kalantar-Hormozi, Soraya Shahrokh, Alireza Mirshmirani, Nazanin Rita Davai
Facial duplication, in whole or in part, is a very rare malformation. It may be symmetrical or asymmetric. Those cases that have been reported in the literature constitute a spectrum extending from simple nasal duplication to complete separation of 2 faces. Up to now there are some reports of eye, nose, mandible, or maxilla duplication separately. But there is no report of oral orifice or lips duplication. The present article reports a case of a newborn girl who presented with 2 mouths and also duplication of zygoma and maxilla...
January 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27956141/slotplates-revisited-a-retrospective-analysis
#17
Brandaan G R Zigterman, Maurice Y Mommaerts
CONTEXT: Slotplates were specifically designed to meet the special requirements of corrective surgeries of the facial skeleton. This design enables small readjustments of bone fragments in the midface and chin area during surgery without complete removal of plates and screws. OBJECTIVE, DESIGN, AND SETTING: The aim of this study was to compare morbidity rates of slotplates versus meshplates after Le Fort I osteotomy, genioplasty and/or zygoma 'sandwich' osteotomy performed in a tertiary care centre...
November 2, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27894664/tomographic-osteometry-of-the-zygomatic-bone-applied-to-traumatology-of-facial-bones-preliminary-retrospective-study-of-zygomatic-summit-in-28-patients
#18
Barbara Lerhe, Sarah Alshehri, Denis Ferachon, Sébastien Dejean, Anne Sophie Salabert, Raphael Lopez
BACKGROUND: The available referential measures defining the zygomatic bone morphology are adequate enough for full determination of the zygoma positioning, especially for trauma surgery, but osteometric analysis of the zygoma positioning based on tomographic examinations could be useful in peroperative and postoperative imaging. In this study, we propose referential measures, taking into account the morphology and the symmetry of the zygoma. In addition, the reliability and reproducibility are considered...
January 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27894548/effects-of-zygoma-gear-appliance-for-unilateral-maxillary-molar-distalization-a-prospective-clinical-study
#19
Dogan Kilkis, Mevlut Celikoglu, Metin Nur, Mehmet Bayram, Celal Candirli
INTRODUCTION: The aim of the study was to evaluate the dentoskeletal effects of the zygoma-gear appliance used for unilateral maxillary molar distalization in patients with Class II subdivision malocclusion. METHODS: This prospective clinical study consisted of 21 patients (9 boys, 12 girls; mean age, 15.68 ± 2.18 years) with unilateral Class II malocclusion treated using the unilateral zygoma-gear appliance supported by a zygomatic miniplate inserted on the Class II malocclusion side...
December 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27893551/mid-face-degloving-an-alternate-approach-to-extended-osteotomies-of-the-midface
#20
Anantanarayanan Parameswaran, Naveen Kumar Jayakumar, Manikandhan Ramanathan, Hermann F Sailer
Extended osteotomies for mid-face advancement require generous exposure of the anterior maxilla, nasal bones, infraorbital rims, orbital floor, zygoma, and the anterior third of the zygomatic arches. This cannot be obtained with an exclusive transoral approach. Hence, the surgeon is usually compelled to utilize supplemental cutaneous incisions that are a compromise on the purpose behind a cosmetic surgery. In order to alleviate the need for such compromise, the authors advocate the mid face degloving approach for extended osteotomies at Lefort II and Lefort III levels...
January 2017: Journal of Craniofacial Surgery
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