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Ear reconstruction

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https://www.readbyqxmd.com/read/28414116/the-largest-european-single-center-experience-300-laparoscopic-pancreatic-resections
#1
Safi Dokmak, Fadhel Samir Ftériche, Béatrice Aussilhou, Philippe Lévy, Philippe Ruszniewski, Jérome Cros, Marie Pierre Vullierme, Linda Khoy Ear, Jacques Belghiti, Alain Sauvanet
BACKGROUND: Although laparoscopic pancreatic resection (LPR) has become a routine, large single center series are still lacking. Our aim was to analyze the results of a large European single center series of LPR. STUDY DESIGN: Between January 2008 and September 2015, 300 LPR were performed and studied prospectively including 165 (55%) distal pancreatectomies, 68 (23%) pancreatoduodenectomies (PD), 30 (10%) enucleations, 35 (11%) central pancreatectomies and 2 (1%) total pancreatectomies...
April 13, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28390601/double-handed-endoscopic-myringoplasty-with-a-holding-system-in-children-preliminary-observations
#2
L O Redaelli De Zinis, M Berlucchi, N Nassif
OBJECTIVES: Endoscopic transcanal myringoplasty is a newly-introduced technique for reconstruction of tympanic membrane perforation that offers the advantage to obviate postauricular incision. The objective of this study was to evaluate the feasibility of a double-handed endoscope holder transcanal myringoplasty in children. This technique permits bimanual execution of the procedure and allows the surgeon to overcome the two significant issues of single-handed endoscope surgery, i.e. easy domination of a bloody field and smooth introduction of the graft...
May 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28388797/dorsal-augmentation-with-homologous-rib
#3
Russell W H Kridel, Angela K Sturm
Dorsal augmentation grafts are used to reconstruct and raise the nasal dorsum in patients with dorsal saddling due to trauma, infection, or previous nasal surgery, as well as in patients with a narrow, congenitally low, and/or wide dorsum. Alloplastic implants and various biomaterials are available for grafting, each with advantages and disadvantages. Although autologous septal cartilage is a preferable and often convenient source of cartilage, it is frequently not sufficient for large volume dorsal augmentation, nor is it available in patients who have had septoplasty, infection, previous rhinoplasty with grafting, or significant trauma...
April 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28384958/application-of-curved-mpr-algorithm-to-high-resolution-3-dimensional-t2-weighted-ciss-images-for-virtual-uncoiling-of-membranous-cochlea-as-an-aid-for-cochlear-morphometry
#4
Joish Upendra Kumar, Y Kavitha
INTRODUCTION: With the use of various surgical techniques, types of implants, the preoperative assessment of cochlear dimensions is becoming increasingly relevant prior to cochlear implantation. High resolution CISS protocol MRI gives a better assessment of membranous cochlea, cochlear nerve, and membranous labyrinth. Curved Multiplanar Reconstruction (MPR) algorithm provides better images that can be used for measuring dimensions of membranous cochlea. AIM: To ascertain the value of curved multiplanar reconstruction algorithm in high resolution 3-Dimensional T2 Weighted Gradient Echo Constructive Interference Steady State (3D T2W GRE CISS) imaging for accurate morphometry of membranous cochlea...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28370229/more-than-just-the-helix-a-series-of-free-flaps-from-the-ear
#5
Patrik Lassus, Annastiina Husso, Jyrki Vuola, Andrew J Lindford
AIM: We herein present our experience using free flaps harvested from the ear region in facial, nasal and intraoral reconstruction. PATIENTS AND METHODS: Between 2011 and 2016, 19 patients underwent reconstruction using 20 free flaps from the ear region based on the superficial temporal vessels. There were 10 males and 9 females with a mean age of 57 years. Defect aetiology consisted of post-tumour ablation (n = 15), trauma (n = 2) and burn scar (n = 2)...
April 1, 2017: Microsurgery
https://www.readbyqxmd.com/read/28352607/a-new-technique-for-conchal-cartilage-harvest
#6
Joon Young Kim, Ho Jik Yang, Ji Won Jeong
The goal of auricular cartilage harvest is to obtain a sufficient amount for reconstruction and to minimize the change in ear shape. The cartilage can be harvested by a posterior or anterior approach, and each method has advantages and disadvantages. The posterior approach presents the advantage of scar concealment, but there are limits to the amount of cymba cartilage that may be harvested. In contrast, the anterior approach may cause a noticeable scar. However, as cartilage is collected, the anterior approach provides a view that facilitates the preservation ear structure...
March 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/28350674/a-new-microtia-reconstruction-method-using-delayed-postauricular-skin-flap
#7
Gaofeng Li, Fan Zhang, Wei Ding, Zihan Wu, Yigao Hu, Tao Luo, Bo Zhang, Xia Jiang
BACKGROUND: This article presents a new microtia reconstruction method using a delayed postauricular skin flap. METHODS: The surgery is scheduled in three stages, the first of which delays the postauricular skin flap and deals with the remnant auricle. Three weeks later, the second stage is carried out. An erect, three-dimensional ear framework fabricated from autogenous rib cartilage is inserted between two flaps. The anterior auricular surface of the framework is draped with the delayed skin flap, and the postauricular surface is draped with postauricular fascia and overlying grafted skin...
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28350666/long-term-comparison-between-human-normal-conchal-and-microtia-chondrocytes-regenerated-by-tissue-engineering-on-nanofiber-polyglycolic-acid-scaffolds
#8
Hitomi Nakao, Robin D Jacquet, Mark Shasti, Noritaka Isogai, Ananth S Murthy, William J Landis
BACKGROUND: Previous regeneration studies of auricle-shaped cartilage by tissue engineering leave unresolved whether the chondrocyte phenotype from human auricular chondrocytes seeded onto polymeric scaffolds is retained over the long term and whether microtia remnants may be a viable cell source for auricular reconstruction. METHODS: Chondrocytes were isolated from human ears, either normal conchal ear or microtia cartilage remnants, expanded in vitro, and seeded onto nanoscale-diameter polyglycolic acid sheets...
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28346290/endoscopic-ear-surgery-for-external-auditory-canal-cholesteatoma
#9
Jörg Dähn, Lukas Anschuetz, Masaya Konishi, Mark Sayles, Marco Caversaccio, Patrick Dubach
BACKGROUND: Treatment of external auditory canal cholesteatoma (EACC) has been a question of debate. To our knowledge and according to a systematic review of endoscopic ear surgery (EES) in 2015, this study describes for the first time the technique and outcome by solely transcanal EES for EACC. STUDY METHOD: Retrospective case series, level of evidence IV. METHODS: Between October 2014 and December 2016, nine patients with unilateral EACC have been treated by EES...
March 24, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28345247/functional-morphological-adaptations-of-the-bony-labyrinth-in-marsupials-mammalia-theria
#10
Cathrin Pfaff, Stefan Czerny, Doris Nagel, Jürgen Kriwet
Diprotodontia represents the largest and ecologically most distinct order of marsupials occurring in Australasian being highly divers in size, locomotion, habitat preferences, feeding, and activity pattern. The spatial orientation in the habitat and therefore the three-dimensional space is detected by the vestibular system of the inner ear, more precisely by the three semicircular canals. In this study, we investigated the bony labyrinth of diprotodontian and selected non-diprotodontian marsupial mammals of almost all genera with noninvasive micro-CT scanning and 3D-reconstructions...
March 27, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28341947/the-versatile-posterior-auricular-fascia-in-secondary-rhinoplasty-procedures
#11
Darryl James Hodgkinson, Pedro Miguel Valente
BACKGROUND: Secondary rhinoplasty often involves the addition of autogenous graft material to add volume, structure, support and to camouflage cartilage and bone grafts. A variety of fascias have been used to camouflage, wrap and give "fill" in secondary rhinoplasty. The posterior auricular fascia is a source of material ideal for such purposes, and its quantity, anatomical structure and ease of harvest with minimal donor site morbidity make it a versatile and attractive autogenous graft...
March 24, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28335320/cellular-interactions-and-formation-of-an-epithelial-nanocoating-like-barrier-with-mesoporous-silica-nanoparticles
#12
Xuan Li, Ka Yan Pang, Tsz Wing Ng, Ping Chung Leung, Cheng Fei Zhang, Ken Cham-Fai Leung, Lijian Jin
Oral mucosa as the front-line barrier in the mouth is constantly exposed to a complex microenvironment with multitudinous microbes. In this study, the interactions of mesoporous silica nanoparticles (MSNs) with primary human gingival epithelial cells were analyzed for up to 72 h, and their diffusion capacity in the reconstructed human gingival epithelia (RHGE) and porcine ear skin models was further assessed at 24 h. It was found that the synthesized fluorescent mesoporous silica nanoparticles (RITC-NPs) with low cytotoxicity could be uptaken, degraded, and/or excreted by the human gingival epithelial cells...
October 27, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28333776/transcanal-endoscopic-ear-surgery-for-middle-ear-cholesteatoma
#13
Eran Glikson, Ruth Yousovich, Jobran Mansour, Michael Wolf, Lela Migirov, Yisgav Shapira
OBJECTIVE: To evaluate the clinical parameters, outcomes, and complications of transcanal endoscopic ear surgeries for middle ear cholesteatoma. STUDY DESIGN: Retrospective study. SETTING: Tertiary university-affiliated medical center. PATIENTS: Adult patients (age >18) who underwent transcanal endoscopic ear surgeries for cholesteatoma, between March 2009 and March 2015. INTERVENTION: Transcanal endoscopic surgery was indicated when the cholesteatoma did not extend posterior to the anterior limb of the lateral semicircular canal...
March 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28330628/analysis-of-the-dura-involvement-in-cholesteatoma-surgery
#14
David Schwarz, Antoniu-Oreste Gostian, Sami Shabli, Philipp Wolber, Karl Bernd Hüttenbrink, Andreas Anagiotos
OBJECTIVE: The involvement of the dura is a rare yet potentially life-threatening complication during cholesteatoma surgery. Thus, the knowledge about treatment and consequences of this issue is of great importance to every ear surgeon. METHODS: This retrospective study analyzed the dura involvement with regard to the type of defect, reconstruction method used, and the post-operative complications of 1291 pediatric and adult cholesteatoma surgeries performed at an academic tertiary care center over a twelve-year period...
March 19, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28326677/implantation-and-positioning-of-a-transcutaneous-magnetic-bone-conduction-hearing-system-for-children-with-microtia-in-preparation-for-auricular-reconstruction
#15
Shradha Sharma, Neil Bulstrode, Andrew Marshall
Microtia is a complex congential issue, which can have a functional and psychosocial effect on patients(1) . It can occur spontaneously or as part of a syndrome. Microtia is a condition in which otolaryngologists and plastic surgeons work closely together in order to reconstruct the ear aesthetically whilst facilitating effective aiding. This article is protected by copyright. All rights reserved.
March 22, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28326539/isotopic-niche-partitioning-between-two-apex-predators-over-time
#16
M Drago, L Cardona, V Franco-Trecu, E A Crespo, D Vales, F Borella, L Zenteno, E M Gonzáles, P Inchausti
1.Stable isotope analyses have become an important tool in reconstructing diets, analyzing resource use patterns, elucidating trophic relations among predators and understanding the structure of food webs. 2.Here, we use stable carbon and nitrogen isotope ratios in bone collagen to reconstruct and compare the isotopic niches of adult South American fur seals (Arctocephalus australis; n = 86) and sea lions (Otaria flavescens; n = 49) -two otariid species with marked morphological differences- in the Río de la Plata estuary (Argentina - Uruguay) and the adjacent Atlantic Ocean during the second half of the 20(th) century and the beginning of the 21(st) century...
March 22, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28322453/radio-anatomical-analysis-of-the-pericranial-flap-money-box-approach-for-ventral-skull-base-reconstruction
#17
Alfonso Santamaría, Cristóbal Langdon, Mauricio López-Chacon, Arturo Cordero, Joaquim Enseñat, Ricardo Carrau, Manuel Bernal-Sprekelsen, Isam Alobid
OBJECTIVES/HYPOTHESIS: To evaluate the versatility of the pericranial flap (PCF) to reconstruct the ventral skull base, using the frontal sinus as a gate for its passage into the sinonasal corridor "money box approach." STUDY DESIGN: Anatomic-radiological study and case series. METHODS: Various approaches and their respective defects (cribriform, transtuberculum, clival, and craniovertebral junction) were completed in 10 injected specimens...
March 21, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28300924/staged-retroauricular-flap-for-helical-reconstruction-after-mohs-micrographic-surgery
#18
Felipe Bochnia Cerci
Staged retroauricular flap is a great option for full-thickness defects along the helical rim and antihelix. Donor site consists of the posterior ear, postauricular sulcus and mastoid area. The advantages of this flap include hidden donor scar, donor tissue similarity and rich vascularity. We present a case of collision tumor on the left helix treated with Mohs micrographic surgery and the resulting full-thickness defect repaired with a staged retroauricular flap. This flap is an effective technique for full-thickness helical defect repair with relatively little operative morbidity...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28293515/anatomical-and-clinical-study-of-the-posterior-auricular-artery-angiosome-in-search-of-a-rescue-tool-for-ear-reconstruction
#19
Oswaldo J Gómez Díaz, Mario D Cruz Sánchez
BACKGROUND: The retroauricular tissues have been used for a long time for ear reconstruction, but the anatomical bases of flaps of this region are not completely clear. The aim of this study was to estimate blood supply area and location of this on the skin and fascia retroauricular dependent of posterior auricular artery (PAA) to establish safe margins to design flaps for auricular reconstruction. METHODS: Dissection under magnification (×3.5) of the PAA through a cervical approach; injection of methylmethacrylate in the PAA as a staining technique; retroauricular approach to identify the territory of irrigation of PAA in the retroauricular skin and fascia; measuring and location of the stained area; and report of 2 cases of ear reconstruction with fasciocutaneous and fascia flaps based on PAA, designed according to the anatomical study...
December 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28293505/accurate-measurements-of-the-skin-surface-area-of-the-healthy-auricle-and-skin-deficiency-in-microtia-patients
#20
Iris A Otto, Rob F M van Doremalen, Ferry P W Melchels, Michail N Kolodzynski, Behdad Pouran, Jos Malda, Moshe Kon, Corstiaan C Breugem
BACKGROUND: The limited cranial skin covering auricular implants is an important yet underrated factor in auricular reconstruction for both reconstruction surgery and tissue engineering strategies. We report exact measurements on skin deficiency in microtia patients and propose an accessible preoperative method for these measurements. METHODS: Plaster ear models (n = 11; male:female = 2:1) of lobular-type microtia patients admitted to the University Medical Center Utrecht in The Netherlands were scanned using a micro-computed tomographic scanner or a cone-beam computed tomographic scanner...
December 2016: Plastic and Reconstructive Surgery. Global Open
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