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https://www.readbyqxmd.com/read/27913755/applications-of-three-dimensional-printing-in-surgery
#1
REVIEW
Chi Li, Tsz Fung Cheung, Vei Chen Fan, Kin Man Sin, Chrisity Wai Yan Wong, Gilberto Ka Kit Leung
Three-dimensional (3D) printing is a rapidly advancing technology in the field of surgery. This article reviews its contemporary applications in 3 aspects of surgery, namely, surgical planning, implants and prostheses, and education and training. Three-dimensional printing technology can contribute to surgical planning by depicting precise personalized anatomy and thus a potential improvement in surgical outcome. For implants and prosthesis, the technology might overcome the limitations of conventional methods such as visual discrepancy from the recipient's body and unmatching anatomy...
December 2, 2016: Surgical Innovation
https://www.readbyqxmd.com/read/27913719/surgical-site-infections-in-major-head-and-neck-surgeries-involving-pedicled-flap-reconstruction
#2
Neerav Goyal, Bharat B Yarlagadda, Daniel G Deschler, Kevin S Emerick, Derrick T Lin, Debbie L Rich, James W Rocco, Marlene L Durand
OBJECTIVE: To evaluate surgical site infections (SSI) after pedicled reconstruction in head and neck surgery. METHODS: Records of patients with pedicled flap reconstructions between 2009 and 2014 at Massachusetts Eye and Ear were reviewed. Onset of SSI or fistula ≤30 days postoperatively was noted. A free flap cohort was reviewed for comparison. RESULTS: Two hundred and eight pedicled reconstructions were performed for cancer (83%), osteoradionecrosis (7%), and other reasons (10%)...
January 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/27908189/thermoacoustic-imaging-of-rabbit-knee-joints
#3
Zihui Chi, Yuan Zhao, Lin Huang, Zhu Zheng, Huabei Jiang
PURPOSE: Knee joint is one of the largest and most complex joints of the body. Knee joint diseases are common, and current clinical imaging technologies such as x-ray computed tomography, magnetic resonance imaging, and ultrasound imaging have limitations in the diagnosis of knee joint diseases. Emerging imaging technologies such as diffuse optical tomography and photoacoustic imaging (PAI) have been applied to the detection of osteoarthritis (OA). However, they are limited to small joints such as the finger and difficult to be used for large joints such as the knee...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27884347/fabrication-of-three-dimensional-scan-to-print-ear-model-for-microtia-reconstruction
#4
Byoungjun Jeon, Chiwon Lee, Myungjoon Kim, Tae Hyun Choi, Sungwan Kim, Sukwha Kim
BACKGROUND: Microtia is a congenital deformity of the external ear that occurs in 1 of every 5000 births. Microtia reconstruction using traditional two-dimensional templates does not provide highly detailed ear shapes. Here, we describe the feasibility of using a three-dimensional (3D) ear model as a reference. MATERIALS AND METHODS: Seven children aged from 11 to 16 (6 grade III and 1 grade II microtia) were recruited from Seoul National University Children's Hospital, Korea...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27878942/morphological-evolution-of-the-mammalian-jaw-adductor-complex
#5
Stephan Lautenschlager, Pamela Gill, Zhe-Xi Luo, Michael J Fagan, Emily J Rayfield
The evolution of the mammalian jaw during the transition from non-mammalian synapsids to crown mammals is a key event in vertebrate history and characterised by the gradual reduction of its individual bones into a single element and the concomitant transformation of the jaw joint and its incorporation into the middle ear complex. This osteological transformation is accompanied by a rearrangement and modification of the jaw adductor musculature, which is thought to have allowed the evolution of a more-efficient masticatory system in comparison to the plesiomorphic synapsid condition...
November 23, 2016: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/27878362/a-3-d-analysis-of-the-protympanum-in-human-temporal-bones-with-chronic-ear-disease
#6
Henrique F Pauna, Rafael C Monsanto, Patricia Schachern, Michael M Paparella, Sebahattin Cureoglu
Eustachian tube dysfunction is believed to be an important factor to cholesteatoma development and recurrence of disease after surgical treatment. Although many studies have described prognostic factors, evaluation methods, or surgical techniques for Eustachian tube dysfunction, they relied on the soft tissues of its structure; little is known about its bony structure-the protympanum-which connects the Eustachian tube to the tympanic cavity, and can also be affected by several inflammatory conditions, both from the middle ear or from the nasopharynx...
November 22, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27876740/-the-application-of-the-biologically-compatible-cyanacrylate-based-glue-for-ossiculoplasty-in-the-patients-presenting-with-chronic-otitis-media
#7
F V Semenov, N F Skibitskaya
The objective of the study was to improve the functional outcomes of the treatment in the patients presenting with chronic otitis media by means of the combined application of platelet-enriched plasma and the biologically compatible cyanacrylate-based glue for the fixation of the reconstructed auditory ossicular chain. The functional results of the surgery were evaluated within 1, 3, and12 months after the intervention making use of tonal threshold audiometry. It was shown that the use of the platelet-enriched plasma with its subsequent fixation by the biologically compatible cyanacrylate-based glue enhances stability of the implanted prosthetic elements, reduces the risk of their displacement during the postoperative period due to the formation of the cicatrical tissue between the structural components of the middle ear...
2016: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/27863632/soft-wall-reconstruction-of-the-canal-wall-with-retrograde-bone-work-for-pediatric-cholesteatoma-long-term-results
#8
Miyako Hatano, Makoto Ito, Hisashi Sugimoto, Masao Noda, Hiroki Hasegawa, Tomokazu Yoshizaki
OBJECTIVE: To retrospectively evaluate the long-term results of surgery for retrograde bone work, using soft-wall reconstruction of the canal wall, for pediatric cholesteatoma. METHODS: We retrospectively evaluated a series of 25 consecutive ears of 24 patients who were ≤16 years of age. All children underwent cholesteatoma surgery between October 2002 and August 2008. The type of cholesteatoma, the length of follow-up, the incidence of residual and recurrent cholesteatoma, postoperative hearing results, and the form of the reconstructed external canal wall and tympanic membrane were assessed...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27836236/optimising-ballistic-facial-coverage-from-military-fragmenting-munitions-a-consensus-statement
#9
J Breeze, D C Tong, D Powers, N A Martin, A M Monaghan, D Evriviades, J Combes, G Lawton, C Taylor, A Kay, J Baden, B Reed, N MacKenzie, A J Gibbons, S Heppell, R F Rickard
VIRTUS is the first United Kingdom (UK) military personal armour system to provide components that are capable of protecting the whole face from low velocity ballistic projectiles. Protection is modular, using a helmet worn with ballistic eyewear, a visor, and a mandibular guard. When all four components are worn together the face is completely covered, but the heat, discomfort, and weight may not be optimal in all types of combat. We organized a Delphi consensus group analysis with 29 military consultant surgeons from the UK, United States, Canada, Australia, and New Zealand to identify a potential hierarchy of functional facial units in order of importance that require protection...
November 8, 2016: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/27834100/sound-lateralization-ability-of-patients-with-bilateral-microtia-and-atresia-after-bilateral-reconstruction-of-auricles-and-external-auditory-canals-and-fitting-of-new-canal-type-hearing-aids-to-replace-a-bone-conduction-hearing-aid
#10
Kimitaka Kaga, Hirotaka Asato
CONCLUSION: Each of eight patients with bilateral microtia and atresia underwent bilateral reconstruction of the auricles and external auditory canals and were fitted bilateral canal-type hearing aids in the operated ears to replace a bone conduction hearing aid. The ability to discriminate inter-aural intensity difference (IID) and even inter-aural time difference (ITD) was retained in all these patients. OBJECTIVE: This study studied the post-operative sound lateralization ability of patients with bilateral microtia and atresia after total reconstruction of both auricles and external auditory canals, followed by fitting of bilateral canal-type hearing aids...
November 11, 2016: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27833874/effect-of-type-1-tympanoplasty-on-the-quality-of-life-of-csom-patients
#11
Khyati Bhatia, Lakshmi Vaid, H C Taneja
Chronic suppurative otitis media (CSOM) continues to be an important public health problem despite significant advances in medical science. Ear discharge, pain, discomfort, difficulty in hearing, limitation of routine activities and emotional problems due to CSOM cause a significant impact on the health and general well being of the patient. We have done Type 1 tympanoplasty in tubotympanic type of COM to reconstruct the tympanic membrane and alleviate the symptoms of the patients. This study presents an analysis of the impact of the surgery on the patient subjectively and its correlation with objective outcomes...
December 2016: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/27826485/patient-specific-3d-models-for-autogenous-ear-reconstruction
#12
Lukasz Witek, Kimberly S Khouri, Paulo G Coelho, Roberto L Flores
No abstract text is available yet for this article.
October 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27826477/reconstructive-approach-to-an-acquired-absence-of-multiple-facial-components-a-case-report
#13
Lauren N Oliver, Kongkrit Chaiyasate
The subject of our case report is a young girl who was attacked by a raccoon when she was 5 months old. She lost the majority of her nose, her entire right ear, and part of her upper lip. She had previous attempts at reconstructive surgery with poor results. Our collective goals were to provide lifelong reconstruction without the use of synthetic implants and to organize the steps in a way that provided psychological benefit early on while allowing her to continue education and childhood activities with minimal disruptions...
October 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27811633/wingtip-flap-for-reconstruction-of-full-thickness-upper-and-lower-eyelid-defects
#14
Ivan Vrcek, Eva Chou, Sean Blaydon, John Shore
PURPOSE: Pentagonal wedge resection is a technique used to address a wide variety of eyelid pathology. This procedure frequently results in excess skin at the apex of the wound, commonly known as a "dog ear." A variety of methods have been described to address the cutaneous redundancy, the most classic of which is the Burow's triangle repair. The authors present a technique to address the anterior lamellar excess that avoids placement of a vertical scar traversing the pretarsal and preseptal portion of the affected eyelid...
November 2, 2016: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27809939/electrocoagulation-improving-bone-cement-use-in-middle-ear-surgery-short-term-and-middle-term-results
#15
C Galy-Bernadoy, M Akkari, M Mondain, A Uziel, F Venail
BACKGROUND: Bone cement is used for ossicular chain repair and revision stapes surgery. Its efficient use requires cautious removal of mucosa from the ossicles. This paper reports a technique for easy, fast and safe removal of this mucosa prior to cement application. It consists of the application of monopolar electrocoagulation on the ossicles prior to bone cement application. METHODS: The outcomes of six cases of revision stapes surgery and seven cases of partial ossiculoplasty, conducted between 2007 and 2012 using this new technique, were evaluated...
November 4, 2016: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/27807675/dog-bite-injury-alar-repair-with-composite-graft
#16
Alberto Goldman, Uwe Wollina
Dog bite injuries are an important emergency. Facial dog bites can lead to disfigurement and stigmatization. Dog owners themselves are the usual victims of facial dog bites. Early surgery provides best results. A 28-year-old male patient presented 1 year after he had been bitten on his nose by his own dog. The pronounced nasal disfigurement with nostril stenosis was treated by reconstruction using a free composite graft from the crus of the ipsilateral ear with good results. Delayed reconstruction can provide satisfying results...
November 2, 2016: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27807242/evolution-and-cryo-em-capsid-structure-of-a-north-american-bat-adenovirus-and-its-relationship-to-other-mastadenoviruses
#17
Nicole Hackenbrack, Matthew B Rogers, Robert E Ashley, M Kevin Keel, Steven V Kubiski, John A Bryan, Elodie Ghedin, Edward C Holmes, Susan L Hafenstein, Andrew B Allison
: Since the first description of adenoviruses in bats in 2006, a number of micro- and megabat species in Europe, Africa, and Asia have been shown to carry a wide diversity of adenoviruses. Here, we report on the evolutionary, biological, and structural characterization of a novel bat adenovirus (BtAdV 250-A) recovered from a Rafinesque's big-eared bat (Corynorhinus rafinesquii) in Kentucky, USA, which is the first adenovirus isolated from North American bats. BtAdV 250-A exhibits a close phylogenetic relationship with Canine mastadenovirus A (CAdV A), as previously observed with other BtAdVs...
November 2, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27796918/pulmonary-artery-reconstruction-with-a-tailor-made-bovine-pericardial-conduit-following-sleeve-resection-of-a-long-segmental-pulmonary-artery-for-the-treatment-of-lung-cancer-technical-details-of-the-dog-ear-method-for-adjusting-diameter-during-vascular-anastomosis
#18
Kimihiro Shimizu, Toshiteru Nagashima, Yoichi Ohtaki, Toru Takahashi, Akira Mogi, Hiroyuki Kuwano
Sleeve resection of the pulmonary artery (PA) is always required for lung-sparing operations in which half or more of the vessel circumference is infiltrated by the primary tumor or metastatic hilar nodes. Following sleeve resection, conduit reconstruction may be indicated if there is excessive distance between the two vascular stumps, because there is a high degree of tension when repaired by direct anastomosis. We herein present a case of PA reconstruction using a tailor-made bovine pericardial conduit after sleeve resection of PA during lung cancer surgery...
October 31, 2016: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27792100/the-effect-of-the-angle-and-length-of-the-eustachian-tube-on-the-success-rate-of-cartilage-type-1-tympanoplasty
#19
Yakup Yegin, Mustafa Çelik, Baver Maşallah Şimşek, Burak Olgun, Aylin Karahasanoğlu, Fatma Tülin Kayhan
OBJECTIVES: To explore the relationships between the angle and length of the eustachian tube (ET) (the ETa and the ETl) and the success rates of type 1 tympanoplasty. STUDY DESIGN: A retrospective clinical chart review. METHODS: In total, 160 patients (81 females and 79 males; average age, 37.12 ± 12.46 years; age range: 18-65 years) who underwent cartilage type 1 tympanoplasty were included. Demographics and anatomical outcomes were recorded...
October 27, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27781161/determining-the-distribution-loss-of-brown-eared-pheasant-crossoptilon-mantchuricum-using-historical-data-and-potential-distribution-estimates
#20
Yilin Li, Xinhai Li, Zitan Song, Changqing Ding
We analyzed the synchronous relationship between forest cover and species distribution to explain the contraction in the distribution range of the brown eared-pheasant (Crossoptilon mantchuricum) in China. Historical resources can provide effective records for reconstructing long-term distribution dynamics. The brown eared-pheasant's historical distribution from 25 to 1947 CE, which included the three provinces of Shaanxi, Shanxi, and Hebei based on this species' habitat selection criteria, the history of the forests, ancient climate change records, and fossil data...
2016: PeerJ
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