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Auricular cartilage

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https://www.readbyqxmd.com/read/29328534/split-thickness-skin-grafting-for-reconstruction-of-auricular-skin-defects-a-statistical-analysis
#1
Tobias Thuile, Lorenz Larcher, Barbara Gatscher, Karl Schwaiger, Jenny Deluca, Amgiad Fallaha, Lukas Tappeiner, Mario Puviani, Klaus Eisendle
BACKGROUND AND OBJECTIVES: Surgical reconstruction following the removal of large malignant auricular lesions is challenging. While many options for defect closure have been described, in the elderly population usually affected flap surgery, long anesthesia times, patient compliance, and anticoagulant therapy pose additional risks. An alternative quick, simple, and effective method of defect closure is therefore highly desirable. The objective of the present study was to assess the aesthetic outcome, healing process, complications, and recurrence rates associated with unmeshed split-thickness skin grafts (STSGs) used for covering large auricular skin defects following cartilage-sparing skin cancer removal...
January 12, 2018: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/29234856/modified-island-technique-for-prominent-ears
#2
Horacio F Mayer, Hugo D Loustau
There have been several methods described for the correction of prominent ears, including techniques that excise, bend, suture, score, or cut the auricular cartilage. The Island Technique, proposed by Pitanguy, is based on the creation of a cartilage island to define the antihelix and correct the conchoscaphal angle. Visibility of sharp edges has been the main criticism of this technique. To avoid them, we advise performing an internal bevel incision to round off the edges and achieve a more natural look. Also, sometimes prominent ears are asymmetric with different conchoscaphal angles, determining a residual but protruding upper pole, thus requiring different treatment on each side...
December 12, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29211970/facilitating-in-vivo-articular-cartilage-repair-by-tissue-engineered-cartilage-grafts-produced-from-auricular-chondrocytes
#3
Chin-Chean Wong, Chih-Hwa Chen, Li-Hsuan Chiu, Yang-Hwei Tsuang, Meng-Yi Bai, Ren-Jei Chung, Yun-Ho Lin, Fon-Jou Hsieh, You-Tzung Chen, Tsung-Lin Yang
BACKGROUND: Insufficient cell numbers still present a challenge for articular cartilage repair. Converting heterotopic auricular chondrocytes by extracellular matrix may be the solution. HYPOTHESIS: Specific extracellular matrix may convert the phenotype of auricular chondrocytes toward articular cartilage for repair. STUDY DESIGN: Controlled laboratory study. METHODS: For in vitro study, rabbit auricular chondrocytes were cultured in monolayer for several passages until reaching status of dedifferentiation...
December 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29189373/incidental-case-of-relapsing-polychondritis-detected-by-18f-fdg-pet-ct
#4
Hayato Kaida, Kazunari Ishii, Soichiro Hanada, Yuji Tohda, Takamichi Murakami
A 78-year-old man had fever, persistent wheezing, and serum C-reactive protein elevation. Malignant lymphoma was suspected because of mediastinal lymph nodes swelling on CT and soluble interleukin 2 receptor elevation. Symmetric F-FDG uptake in the tracheobronchial tree and bilateral auricles was observed on PET/CT. He was finally diagnosed as having relapsing polychondritis by auricular cartilage biopsy. F-FDG PET/CT may have crucial role in evaluating the extent of inflammation and deciding the biopsy site of relapsing polychondritis...
November 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29167864/hybrid-cartilage-modifying-otoplasty-technique-and-outcomes
#5
Jeffrey Markey, Jess Mace, Yvette Anderson, Tom D Wang
Importance: Otoplasty is performed to correct prominauris, one of the most common head and neck congenital deformities. Advances in combination hybrid approaches enable surgeons to achieve greater precision and accuracy. Objective: To describe a hybrid cartilage-modifying approach and evaluate the procedure's effectiveness and safety. Design, Setting, and Participants: Medical record review including patients undergoing otoplasty by the present technique from January 2006 to December 2016 as performed by the senior author at a tertiary academic referral center...
November 22, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/29153190/auricular-reconstruction-using-porous-polyethylene-implant-technique
#6
REVIEW
Scott Stephan, John Reinisch
Alloplast-based ear reconstruction has become more popular over the years because it offers many advantages compared with the traditional staged autologous costal cartilage approach. Advantages include earlier reconstruction in the setting of microtia, fewer procedures, less donor site morbidity, shorter surgeon learning curve, and improved consistency in the final aesthetic result. Although other implantable materials have been used in auricular reconstruction with variable success, porous high-density polyethylene frameworks combined with recent advances in the creation of the soft tissue coverage have significantly improved outcomes with minimal complications and long-term viability...
February 2018: Facial Plastic Surgery Clinics of North America
https://www.readbyqxmd.com/read/29153188/autologous-rib-microtia-construction-nagata-technique
#7
REVIEW
Akira Yamada
Nagata technique becomes most popular method of autologous rib microtia construction. To achieve successful outcome, 3 keys must be perfect: skin envelope, 3D cartilage framework, and proper location of the construct. The first step of the surgery is to identify "auricular rectangle." Relationship between the auricular rectangle and the vestige will determine if the vestige is usable for surgery. Rib cartilage must be harvested without perichondrium to prevent chest deformity. Lobule split technique is the hallmark of the Nagata technique, which allows skin envelope expansion, and allows deeper conchal cavity...
February 2018: Facial Plastic Surgery Clinics of North America
https://www.readbyqxmd.com/read/29139602/cell-yield-chondrogenic-potential-and-regenerated-cartilage-type-of-chondrocytes-derived-from-ear-nasoseptal-and-costal-cartilage
#8
Aijuan He, Huitang Xia, Kaiyan Xiao, Tingting Wang, Yu Liu, Jixin Xue, Dan Li, Shengjian Tang, Fangjun Liu, Xiaoyun Wang, Wenjie Zhang, Wei Liu, Yilin Cao, Guangdong Zhou
Functional reconstruction of large cartilage defects in subcutaneous sites remains clinically challenging because of limited donor cartilage. Tissue engineering is a promising and widely accepted strategy for cartilage regeneration. To date however, this strategy has not achieved a significant breakthrough in clinical translation owing to a lack of detailed pre-clinical data on cell yield and functionality of clinically applicable chondrocytes. To address this issue, the current study investigated the initial cell yield, proliferative potential, chondrogenic capacity, and regenerated cartilage-type of human chondrocytes derived from auricular (AU), nasoseptal (NS), and costal (CO) cartilage using a scaffold-free cartilage regeneration model (cartilage sheet)...
November 15, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29135862/management-of-sigmoid-sinus-associated-pulsatile-tinnitus-a-systematic-review-of-the-literature
#9
Alan C Wang, Avery N Nelson, Cassandra Pino, Peter F Svider, Robert S Hong, Eleanor Chan
OBJECTIVES: Although studies demonstrate 4 to 20% of patients with pulsatile tinnitus (PT) have associated sigmoid sinus anomalies, no consensus exists regarding optimal management. Our objective was to perform a systematic review exploring surgical and endovascular intervention of PT caused by sigmoid sinus anomalies. DATA SOURCES/EXTRACTION: A systematic review was performed using the Preferred Reporting Systems for Systematic Reviews and Meta-Analysis guidelines for reporting of results, with a target population encompassing patients with PT and either sigmoid sinus diverticulum or sigmoid wall dehiscence...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29126262/relapsing-polychondritis-a-clinical-review-for-rheumatologists
#10
Jack Kingdon, Joseph Roscamp, Shirish Sangle, David D'Cruz
Relapsing polychondritis (RPC) is a rare autoimmune rheumatic disorder that is traditionally classified as a systemic vasculitis. It is characterized by inflammation of cartilage, and typical presenting features include chondritis of the nasal bridge, auricular chondritis, ocular inflammation and involvement of the bronchial tree. Its rarity often leads to considerable delay in establishing a diagnosis and poses a significant management challenge to clinicians, as no conventional guidelines exist. This review summarizes the clinical features of RPC and provides guidance for rheumatologists on making the diagnosis and assessing organ involvement...
November 6, 2017: Rheumatology
https://www.readbyqxmd.com/read/29090195/histological-physical-studies-after-xenograft-of-porcine-ear-cartilage
#11
Yong Ah Ryu, Meiying Jin, Nakheon Kang
BACKGROUND: Because of the relatively similar size of organs to human and the physiological and structural similarities, the use of porcine as xenograft donors is progressing very actively. In this study, we analyzed the characteristics of porcine ear cartilage and evaluated its suitability as graft material in reconstructive and cosmetic surgery. METHODS: The auricular cartilage was harvested from two pigs, and subjected to histological examination by immunohistochemical staining...
September 2017: Archives of Craniofacial Surgery
https://www.readbyqxmd.com/read/29078705/comparisons-of-auricular-cartilage-tissues-from-different-species
#12
COMPARATIVE STUDY
Loraine L Y Chiu, Renata Giardini-Rosa, Joanna F Weber, Sharon L Cushing, Stephen D Waldman
OBJECTIVES: Tissue engineering of auricular cartilage has great potential in providing readily available materials for reconstructive surgeries. As the field of tissue engineering moves forward to developing human tissues, there needs to be an interspecies comparison of the native auricular cartilage in order to determine a suitable animal model to assess the performance of engineered auricular cartilage in vivo. METHODS: Here, we performed interspecies comparisons of auricular cartilage by comparing tissue microstructure, protein localization, biochemical composition, and mechanical properties of auricular cartilage tissues from rat, rabbit, pig, cow, and human...
December 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29045420/inhibition-of-apoptosis-signal-regulating-kinase-1-alters-the-wound-epidermis-and-enhances-auricular-cartilage-regeneration
#13
Qian-Shi Zhang, Deepa S Kurpad, My G Mahoney, Marla J Steinbeck, Theresa A Freeman
Why regeneration does not occur in mammals remains elusive. In lower vertebrates, epimorphic regeneration of the limb is directed by the wound epidermis, which controls blastema formation to promote regrowth of the appendage. Herein, we report that knockout (KO) or inhibition of Apoptosis Signal-regulated Kinase-1 (ASK1), also known as mitogen-activated protein kinase kinase kinase 5 (MAP3K5), after full thickness ear punch in mice prolongs keratinocyte activation within the wound epidermis and promotes regeneration of auricular cartilage...
2017: PloS One
https://www.readbyqxmd.com/read/29040358/tissue-expansion-using-hyaluronic-acid-filler-for-single-stage-ear-reconstruction-a-novel-concept-for-difficult-areas
#14
Amir Inbal, Benjamin T Lemelman, Eran Millet, Andrew Greensmith
Background: Auricular reconstruction is one of the most challenging procedures in plastic surgery. An adequate skin envelope is essential for cartilage framework coverage, yet few good options exist without additional surgery. We propose a novel method for minimally invasive tissue expansion, using hyaluronic acid (HA) filler to allow for single-stage ear reconstruction. Objectives: To introduce the novel concept of HA filler for tissue expansion in ear reconstruction, and as an alternative to traditional expansion techniques...
October 16, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29019876/unique-circumferential-peripheral-keratitis-in-relapsing-polychondritis-a-case-report
#15
Naohiro Motozawa, Takahiro Nakamura, Seiji Takagi, Masashi Fujihara, Yasuhiko Hirami, Kazuhiro Ishida, Chie Sotozono, Yasuo Kurimoto
RATIONALE: Relapsing polychondritis (RP) is a rare collagen disease characterized by inflammation and destruction of cartilage throughout the body. The paper details the clinical course of a case of RP with unique circumferential peripheral keratitis. PATIENT CONCERNS: A 54-year-old Japanese woman was referred to the hospital presenting with auricular and ocular pain. DIAGNOSES: Based on the auricle biopsy results and the three presenting symptoms (bilateral auricular chondritis, inflammatory arthritis and ocular inflammation), her condition was diagnosed as RP...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28953580/relapsing-polychondritis-with-increased-bone-marrow-signal-on-magnetic-resonance-imaging-in-a-13-year-old-girl
#16
Kanako Nakayama, Masafumi Yamada, Yusuke Tozawa, Yuji Nakamaru, Masahiro Ueki, Shunichiro Takezaki, Hiroki Nishimura, Tomoko Mitsuhashi, Noriko Oyama-Manabe, Keita Sakamoto, Ryuta Arai, Sayaka Yamamoto, Kimiaki Uetake, Tadashi Ariga
Relapsing polychondritis (RPC) is an inflammatory disorder predominantly affecting cartilaginous structures including ears, nose, joints, and respiratory tracts. Although RPC is rare in children, previous reports indicated childhood RPC is atypical or severe. A 13-year-old girl presented with redness and swelling of the bilateral auricles and subsequently developed arthralgia of multiple joints. Histopathologic findings of the auricular cartilages were compatible with RPC. Magnetic resonance imaging (MRI) for the evaluation of arthralgia unexpectedly demonstrated increased bone marrow signal of metacarpals and the distal epiphysis of radii and ulnae...
September 26, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28938361/columellar-reconstruction-following-nasal-cpap-injury
#17
Catherine S Chang, Jordan W Swanson, Anthony Wilson, David W Low, Scott P Bartlett
Nasal continuous positive airway pressure (nCPAP) is utilized increasingly to treat pulmonary immaturity in premature neonates. Nasal injury is common with nCPAP use, with full thickness tissue loss at the columella among the most devastating complications.Columellar necrosis often imparts a full thickness injury to the overlying columellar skin, the medial crura of the lower lateral nasal cartilages, as well as the anteromedial inner nasal mucosal lining, and potentially the anterior septal cartilage. Consequently, the columella can become scarred and shortened...
September 15, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28938313/a-novel-three-step-method-for-correction-of-type-1-stahl-ear
#18
Mimi R Borrelli, Edward H Davidson, Anand R Kumar
BACKGROUND: Stahl ear, a rare congenital auricular anomaly, occurs when a third crus crosses the scaphoid fossa. Optimal elimination of the third crus and reconstruction the superior crus in type 1 Stahl ear remain undercharacterized. We present a novel 3-step technique to reliably correct a type 1 Stahl ear as a case report. METHODS: A 10-year-old male with bilateral prominent type 1 Stahl ears is presented. An anterior curvilinear helical fold incision and posterior V wedge excision was used for exposure...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28872513/reconstruction-of-orbital-floor-with-auricular-concha
#19
Ergin Seven, Ali Teoman Tellioglu, Emre Inozu, Hulda Rifat Ozakpinar, Ugur Horoz, Avni Tolga Eryilmaz, Sebat Karamursel
Orbital floor fractures of varying sizes commonly occur after orbital injuries and remain a serious challenge. Serious complications of such fractures include enopthalmos, restriction of extraocular movement, and diplopia. There is a dearth of literature that can be applied widely, easily, and successfully in all such situations, and therefore there is no consensus on the treatment protocol of this pathology yet. Autogenous grafts and alloplastic and allogenic materials with a wide variety of advantages and disadvantages have been discussed...
October 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28846132/age-related-histologic-and-biochemical-changes-in-auricular-and-septal-cartilage
#20
Kiersten L Riedler, Alireza Shokrani, Alexander Markarian, Laurel M Fisher, Jon-Paul Pepper
OBJECTIVES/HYPOTHESIS: To characterize the histologic and biochemical properties of auricular and septal cartilage and analyze age-related changes in middle-aged to older adults. STUDY DESIGN: Cross-sectional study of auricular and septal cartilage from 33 fresh cadavers. METHODS: Auricular and septal cartilage specimens were stained using Safranin O for glycosaminoglycans, Verhoeff's stain for elastin, and Masson's trichrome for collagen...
November 2017: Laryngoscope
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