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https://www.readbyqxmd.com/read/28230707/low-cost-3d-printing-orbital-implant-templates-in-secondary-orbital-reconstructions
#1
Alison B Callahan, Ashley A Campbell, Carisa Petris, Michael Kazim
PURPOSE: Despite its increasing use in craniofacial reconstructions, three-dimensional (3D) printing of customized orbital implants has not been widely adopted. Limitations include the cost of 3D printers able to print in a biocompatible material suitable for implantation in the orbit and the breadth of available implant materials. The authors report the technique of low-cost 3D printing of orbital implant templates used in complex, often secondary, orbital reconstructions. METHODS: A retrospective case series of 5 orbital reconstructions utilizing a technique of 3D printed orbital implant templates is presented...
February 22, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28230592/a-modified-bifurcated-periosteal-flap-for-simultaneous-reconstruction-of-upper-and-lower-lateral-canthal-tendons
#2
Yasuhiro Takahashi, Hirohiko Kakizaki
A bifurcated periosteal flap is useful for simultaneous reconstruction of the upper and lower lateral canthal tendons. The original technique harvested the flap horizontally from the frontal process of the zygoma, which mostly resulted in an insufficient flap length because of the narrowness of the zygoma. Here, the authors report the use of a modified bifurcated periosteal flap, raised from the superolateral orbital rim. The lower flap was positioned to slant inferiorly to create a downward slope of the lower eyelid for smooth lacrimal drainage by gravity...
February 22, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28224428/a-new-method-of-3-dimensional-localization-of-intraocular-foreign-bodies-using-ct-imaging-a-role-of-optic-nerve
#3
Qi Yao, Han-Ping Wu, Bin Xiong, Ping Han, Chuan-Sheng Zheng
Computed tomography (CT) is considered the most sensitive method for the detection of intraocular foreign bodies (IOFBs). The purpose of this study was to evaluate a new method of 3-dimentional (3D) localization of IOFBs that takes advantage of the anatomical structure of the optic nerve and to assess the clinical outcomes using this new method. Twenty-two trauma patients with IOFBs or suspected IOFBs admitted to our hospital were scanned with multislice CT (MSCT) between July and December 2003. All scanning was performed with a 16-row spiral CT in axial plane using a sequential scanning protocol...
February 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28222893/reconstruction-of-midface-defect-from-idiopathic-destructive-process-using-medpor-implant
#4
Joel Franco, Michael S Harris, Dominic Vernon, Taha Z Shipchandler
IMPORTANCE: Reconstruction of the midface remains a challenging task for even the most experienced surgeon, with a host of reconstructive options including free tissue transfer, allografts, or prosthetic implants. Presented here is a case of idiopathic bony destruction of the right midface in a 19year old female, creating a unique defect requiring repair. OBJECTIVE: Demonstrate a unique case of severe maxillary degeneration and discuss the associated reconstructive challenges and final repair with a prosthetic implant...
January 18, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28220619/the-palatal-interpterygoid-vacuities-of-temnospondyls-and-the-implications-for-the-associated-eye-and-jaw-musculature
#5
Florian Witzmann, Ingmar Werneburg
A diagnostic feature of temnospondyls is the presence of an open palate with large interpterygoid vacuities, unlike the closed palate of most other early tetrapods, in which the vacuities are either slit-like or completely absent. Attachment sites on neurocranium and palatal bones in temnospondyls allow the reconstruction of a powerful m. retractor bulbi and a large, sheet-like m. levator bulbi that formed the elastic floor of the orbit. This muscle arrangement indicates that temnospondyls were able to retract the eyeballs through the interpterygoid vacuities into the buccal cavity, like extant frogs and salamanders...
February 21, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28211877/fresh-frozen-amniotic-membrane-for-conjunctival-reconstruction-after-excision-of-neoplastic-and-presumed-neoplastic-conjunctival-lesions
#6
U Agraval, P Rundle, I G Rennie, S Salvi
PurposeSuspicious neoplastic conjunctival lesions often require wide excision with tumour-free margins, leaving significant conjunctival defects requiring reconstruction. In this study we report the results of using fresh frozen amniotic membrane grafts (AMG) after wide excision of potentially malignant lesions.MethodsRetrospective review of 53 patients; between January 2011 and April 2014. Conjunctival lesions were excised with a non-touch technique (2 mm margin) and sent for histopathological analysis. The surgical margins were treated with cryotherapy and a fresh frozen AMG was used to cover the defect...
February 17, 2017: Eye
https://www.readbyqxmd.com/read/28210413/orbital-adherence-syndrome-following-the-use-of-titanium-precontoured-orbital-mesh-for-the-reconstruction-of-posttraumatic-orbital-floor-defects
#7
Geraldine Hwee Ping Lee, Samuel Yew Ming Ho
Orbital blowout fractures are a common occurrence following orbital trauma. Depending on the size of the defect and the contents that have herniated or incarcerated, possible sequelae include enophthalmos, diplopia, dystopia, and entrapment. Surgical intervention aims to prevent or alleviate this through the use of a bone graft or an alloplastic implant to reconstitute the continuity of the orbit. However, in doing so, the implant itself may result in the unexpected adherence of the periorbita, resulting in orbital adherence syndrome...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28210404/infraorbital-nerve-decompression-for-infraorbital-neuralgia-causalgia-following-blowout-orbital-fractures-a-case-series
#8
Bijan Beigi, Mazda Beigi, Nuwan Niyadurupola, Manuel Saldana, Nabil El-Hindy, Deepak Gupta
The purpose of this study was to present the management of a series of patients referred with infraorbital nerve paraesthesia that developed after insignificant orbital floor fracture without diplopia or exophthalmos, and that did not require initial surgical repair. This is a retrospective interventional case series. The main outcome and measures were assessment of preoperative symptoms including neuralgia and sensory symptoms; review of periorbital computed tomography (CT) scans; and assessment of postoperative effects of surgery for infraorbital nerve decompression...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28210177/orbital-reconstruction-with-a-partially-absorbable-mesh-monofilament-polypropylene-fibre-and-monofilament-poliglecaprone-25-our-experience-with-34-patients
#9
Moustafa Alkhalil, J Joshi Otero
PURPOSE: To evaluate the effectiveness and complications related to the use of a partially absorbable mesh for the reconstruction of orbital floor fractures. This is a retrospective review of 34 consecutive patients who suffered orbital trauma from August 2007 to March 2013 treated with a partially absorbable mesh for orbital reconstruction. Data collected included gender, age, nationality, cause of injury, date of admission, date of surgery, date of discharge, type of fracture, signs and symptoms such as diplopia, enophthalmos, and sensory disturbance related to the infraorbital nerve, complications before and after surgery, and follow-ups at 1 week, 1 month, 6 months, and after 1 year...
July 2016: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28207469/sequence-of-surgical-reconstruction-in-a-child-with-cleft-lip-and-palate-associated-with-congenital-facial-teratomas
#10
Oswaldo J Gómez Díaz, Mario D Cruz Sánchez
We describe a case of left homolateral complete cleft lip/palate associated with a congenital left maxillary teratoma and left orbital teratoma. The patient required step-by-step reconstruction that first included resection of the 2 teratomas in consideration of cleft lip repair, cleft palate repair, and correction of the left periorbital anomalies, which were performed later. After performing all the necessary procedures, complete resection of the tumors and correction of the anomalies associated with the lip, palate, and left orbit were achieved...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28207461/using-dental-implants-concomitant-with-onlay-bone-grafting-for-auricular-reconstruction
#11
Amin Rahpeyma, Saeedeh Khajehahmadi
Conventional dental implants have been reported for nasal and orbital regions but due to limited thickness of calvarium they are not used in mastoid region. Onlay bone grafting in skull concomitant with implants is a predictable method and experimental animal studies confirm it. Parietal bone and lateral mandibular ramus are suggested source of bone grafts and dental implants with 7 mm length can be used safely. Increased fixture length may lead to increase survival in long term.
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28203499/sandwich-fascial-anterolateral-thigh-flap-in-head-and-neck-reconstruction-evolution-or-revolution
#12
Mario Cherubino, Jens Berli, Mario Turri-Zanoni, Paolo Battaglia, Francesca Maggiulli, Martina Corno, Federico Tamborini, Edoardo Montrasio, Paolo Castelnuovo, Luigi Valdatta
INTRODUCTION: The anterolateral thigh perforator flap (ALT) represents the workhorse for most reconstructive efforts in the head and neck regions. The main advantages of this flap are its versatility, the length of the pedicle, and the low morbidity of the donor site. The major drawback is the bulkiness of this flap with the frequent need for secondary revisions. To overcome this, we have developed a novel way to harvest and inset the ALT, called the sandwich fascial ALT flap (SALT). METHODS: All patients undergoing head and neck reconstruction using the SALT flap from January 2013 to March 2016 were included in this retrospective analysis...
January 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28202996/-surgical-reconstruction-of-maxillary-defects-using-a-computer-assisted-techniques
#13
W B Zhang, Y Yu, Y Wang, X J Liu, C Mao, C B Guo, G Y Yu, X Peng
The maxilla is the most important bony support of the mid-face skeleton and is critical for both esthetics and function. Maxillary defects, resulting from tumor resection, can cause severe functional and cosmetic deformities. Furthermore, maxillary reconstruction presents a great challenge for oral and maxillofacial surgeons. Nowadays, vascularized composite bone flap transfer has been widely used for functional maxillary reconstruction. In the last decade, we have performed a comprehensive research on functional maxillary reconstruction with free fibula flap and reported excellent functional and acceptable esthetic results...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202368/the-use-of-virtual-surgical-planning-and-navigation-in-the-treatment-of-orbital-trauma
#14
Alan Scott Herford, Meagan Miller, Floriana Lauritano, Gabriele Cervino, Fabrizio Signorino, Carlo Maiorana
Virtual surgical planning (VSP) has recently been introduced in craniomaxillofacial surgery with the goal of improving efficiency and precision for complex surgical operations. Among many indications, VSP can also be applied for the treatment of congenital and acquired craniofacial defects, including orbital fractures. VSP permits the surgeon to visualize the complex anatomy of craniofacial region, showing the relationship between bone and neurovascular structures. It can be used to design and print using three-dimensional (3D) printing technology and customized surgical models...
January 21, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28195890/medial-orbital-wall-reconstruction-with-porous-polyethylene-by-using-a-transconjunctival-approach-with-a-caruncular-extension
#15
Chieh Chou, Yur-Ren Kuo, Chien-Chang Chen, Cheng-Sheng Lai, Sin-Daw Lin, Shu-Hung Huang, Su-Shin Lee
BACKGROUND: The reported rate of isolated medial orbital wall fractures varies widely but has been found to be as high as 55% of all orbital fractures. Identifying and repairing medial orbital wall defects by using appropriate materials improves patient outcome considerably; however, most related research has focused on orbital floor defect management rather than medial orbital wall treatment, and no consensus on repairing medial orbital wall fractures exists. Furthermore, medial orbital wall fracture is a main cause of posttraumatic enophthalmos...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28193444/surgical-navigation-a-systematic-review-of-indications-treatments-and-outcomes-in-oral-and-maxillofacial-surgery
#16
REVIEW
Iman Azarmehr, Kasper Stokbro, R Bryan Bell, Torben Thygesen
PURPOSE: This systematic review investigates the most common indications, treatments, and outcomes of surgical navigation (SN) published from 2010 to 2015. The evolution of SN and its application in oral and maxillofacial surgery have rapidly developed over recent years, and therapeutic indications are discussed. MATERIALS AND METHODS: A systematic search in relevant electronic databases, journals, and bibliographies of the included articles was carried out. Clinical studies with 5 or more patients published between 2010 and 2015 were included...
January 18, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28185781/classification-of-orbital-exenteration-and-reconstruction
#17
Marco R Kesting, Steffen Koerdt, Niklas Rommel, Thomas Mücke, Klaus-Dietrich Wolff, Christopher P Nobis, Florian Ringel, Gesche Frohwitter
Orbital exenteration (OE) is considered to be a mutilating surgical procedure reserved for relentlessly progressive neoplastic disorders or extensive facial trauma with unfavourable eye involvement. Malignant tumours, accounting for the majority of ablative orbital surgeries, may be caused by primary orbital tumours or secondarily by neoplasias from the surrounding skin, the maxillary sinus or intracranial malignomas. Orbital exenteration following trauma is mostly caused by penetrating globe defects or extended infections with the danger of intracranial effects...
January 10, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28179700/calvarial-remodelling-surgery-neurosurgical-experience-of-multidisciplinary-craniofacial-reconstruction
#18
Abdul Ghaffar, Zahid Hussain, Shahzad Ahmed Qasmi, Shahid Hameed Chaudhry
OBJECTIVE: To evaluate the safety, cosmetic and functional outcome of craniofacial reconstruction surgery for primary craniosynostosis and clefts. METHODS: This quasi-experimental study was conducted at the Combined Military Hospital, Rawalpindi, Pakistan, from June 2011 to December 2014, and comprised paediatric patients undergoing calvarial reconstructive procedures. Fronto-orbital advancement and reconstruction, total calvarial remodelling and box flap reconstruction techniques were used...
December 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28169905/reconstruction-of-large-orbital-posterior-floor-wall-fracture-considering-orbital-floor-slope-using-endoscope
#19
Jinhwan Park, Jungah Huh, Joonsik Lee, Minwook Chang, Hwa Lee, Minsoo Park, Sehyun Baek
PURPOSE: Reconstruction of a large orbital fracture extending to the posterior wall of the maxillary sinus is difficult and challenging. In this study, the authors present transconjunctival or transcaruncular approach using endoscopy and layered porous polyethylene barrier sheets to manage large orbital floor wall fracture. METHODS: A retrospective review of all patients who underwent reconstruction of large orbital floor wall fractures between June 2009 and July 2015 was conducted...
February 6, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28167754/northward-extent-of-east-asian-monsoon-covaries-with-intensity-on-orbital-and-millennial-timescales
#20
Yonaton Goldsmith, Wallace S Broecker, Hai Xu, Pratigya J Polissar, Peter B deMenocal, Naomi Porat, Jianghu Lan, Peng Cheng, Weijian Zhou, Zhisheng An
The magnitude, rate, and extent of past and future East Asian monsoon (EAM) rainfall fluctuations remain unresolved. Here, late Pleistocene-Holocene EAM rainfall intensity is reconstructed using a well-dated northeastern China closed-basin lake area record located at the modern northwestern fringe of the EAM. The EAM intensity and northern extent alternated rapidly between wet and dry periods on time scales of centuries. Lake levels were 60 m higher than present during the early and middle Holocene, requiring a twofold increase in annual rainfall, which, based on modern rainfall distribution, requires a ∼400 km northward expansion/migration of the EAM...
February 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
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