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Auricular cartilage

A Ghassemi, S S Ahmed, H Ghanepur, A Modabber
The reconstruction of a full-thickness defect of the distal third of the nose requires the restoration of all three anatomical layers. A practical method for three-layer reconstruction of the lower third of the nose and the long-term results of this technique are presented herein. A combined reconstruction technique was utilized, including a reverse subcutaneous pedicled nasolabial flap to restore the nasal mucosa, an auricular cartilage graft for structural support, and a forehead flap for cutaneous coverage of the defect...
October 22, 2016: International Journal of Oral and Maxillofacial Surgery
Hari Ram, Hardik Makadia, Gagan Mehta, Shadab Mohammad, Rakesh Kumar Singh, Nimisha Singh, Geeta Singh
INTRODUCTION: The term oro-antral fistula is understood to mean of fistular canal covered with epithelia which may or may not be filled with granulation tissue or polyposis of the sinus mucous membrane. With the presence of a fistula the sinus is permanently open, which enables the passage of microbial flora of the oral cavity into the maxillary sinus and the occurrence of inflammation with all possible consequences. Every now and then various researchers have proposed innumerable techniques to treat this defect...
September 2016: Journal of Maxillofacial and Oral Surgery
Norio Fukuda, Hirotaka Asato, Kohei Umekawa, Goro Takada, Takeshi Kan, Shoichi Sasaki
BACKGROUND: Adhesion occurs as a part of the wound healing process, but it sometimes compromises patients' daily activities. The authors were looking for materials and methods that could prevent adhesion, and noticed that the costal cartilage has possibility. The anti-adhesive property of the costal cartilage was examined histologically. METHODS: Thirty-five patients with microtia who provided consent for participating in this study were enrolled between April 2008 and March 2015...
October 14, 2016: Journal of Plastic Surgery and Hand Surgery
Michail N Kolodzynski, Moshe Kon, Silvan Egger, Corstiaan C Breugem
Acquired auricular deformities may diminish facial esthetics and cause psychological distress. The aim of this article is to provide an overview of the type of injuries and applied reconstructive techniques in a large academic hospital in The Netherlands. A retrospective chart review was conducted for the last 105 patients who underwent auricular reconstruction for an acquired deformity. Data concerning gender, affected side, cause of injury, anatomical region, the previous and further surgeries, type of cartilage, and skin cover used were collected and analyzed...
October 6, 2016: European Archives of Oto-rhino-laryngology
Hakan Emmungil, Sibel Zehra Aydın
Relapsing polychondritis (RPC) is a unique and rarely observed autoimmune condition regarded as recurrent extensive chondritis of the auricular, nasal, and tracheal cartilages. Moreover, heart, main arteries, skin, and eyes may be involved. Several forms of clinical manifestations may be seen, and the pathogenesis still remains anonymous. A concomitant disease, particularly myelodysplasia or other systemic autoimmune disease can be detected in one-third of the patients with RPC. The treatment of RPC should be considered on personal basis and classified according to disease activity and severity...
December 2015: Eur J Rheumatol
Erica Kumar, Nimesh R Patel, Elizabeth G Demicco, Judith V M G Bovee, Andre M Olivera, Dolores H Lopez-Terrada, Steven D Billings, Alexander J Lazar, Wei-Lien Wang
Nodular fasciitis is a benign self-limited myofibroblastic neoplasm, which usually involves the upper extremities and trunk of young patients. These tumors have been shown to harbor a translocation involving the MYH9 and USP6 genes, leading to overexpression of the latter. We report seven cases of nodular fasciitis with cutaneous presentations. All cases involved the dermis, with six involving the superficial subcutis, and one auricular tumor extending into cartilage. All cases showed USP6 rearrangement by fluorescence in situ hybridization; in two of three cases, the characteristic MYH9-USP6 fusion was demonstrated by RT-PCR...
September 30, 2016: Journal of Cutaneous Pathology
Peng Zhu, Suijun Chen
CONCLUSIONS: The use of the 3D template model in microtia surgery leads to satisfactory results, for its contribution to the engraving and localization of the microtia auricle in auricle reconstruction. OBJECTIVES: The aim of the study was to create an anatomical correct 3D rapid prototyping model for patients with microtia, to assist with the accurate fabrication and localization of a coastal cartilage framework for auricular reconstruction, and patients, who had undergone rib-cartilage reconstruction to treat a congenital auricular defect, were evaluated for aesthetic outcomes following ear reconstruction with a different template model...
September 15, 2016: Acta Oto-laryngologica
David Robla Costales, Luis Junquera, Eva García Pérez, Sara Gómez Llames, María Álvarez-Viejo, Álvaro Meana-Infiesta
PURPOSE: The aims of this study were twofold: first, to evaluate the production of cartilaginous tissue in vitro and in vivo using a novel plasma-derived scaffold, and second, to test the repair of experimental defects made on ears of New Zealand rabbits (NZr) using this approach. MATERIALS AND METHODS: Scaffolds were seeded with chondrocytes and cultured in vitro for 3 months to check in vitro cartilage production. To evaluate in vivo cartilage production, a chondrocyte-seeded scaffold was transplanted subcutaneously to a nude mouse...
August 26, 2016: Journal of Cranio-maxillo-facial Surgery
F Firmin, A Marchac
Reconstruction of complex auricular malformations is one of the longest surgical technique to master, because it requires an extremely detailed analysis of the anomaly and of the skin potential, as well as a to learn how to carve a complex 3D structure in costal cartilage. Small anomalies can be taken care of by any plastic surgeon, providing that he/she is aware of all the refinements of ear surgery. In this chapter, we analyze retrospectively 30 years of auricular reconstruction, ranging from small anomalies to microtia (2500 cases), excluding aesthetics variants such as prominent ears...
October 2016: Annales de Chirurgie Plastique et Esthétique
Salih Onur Basat, Fatih Ceran, Ufuk Askeroglu, Tolga Aksan, Cagdas Orman, Memet Yazar, Ilker Uscetin, Mithat Akan, Mehmet Bozkurt
BACKGROUND: Prominent ear deformity (PD) is an unacceptable condition of pinna that affects 5% of the population and is associated with emotional stress, behavioral disturbances, and social restrictions in relationships. Conchal hypertrphy, inadequate formation of antihelical fold, earlobe placement ahead than it should be, or various combinations of these changes are main characteristics of PD. Many surgical techniques have been described for the PD.The authors' aim was to present laterally based postauricular dermal flap combination with cartilage-sparing methods and effectiveness of this technique in suture extrusion prevention and reducing the rate of recurrence with long-term results...
September 2016: Journal of Craniofacial Surgery
Y Melgarejo-Ramírez, R Sánchez-Sánchez, J García-López, A M Brena-Molina, C Gutiérrez-Gómez, C Ibarra, C Velasquillo
The external ear is composed of elastic cartilage. Microtia is a congenital malformation of the external ear that involves a small reduction in size or a complete absence. The aim of tissue engineering is to regenerate tissues and organs clinically implantable based on the utilization of cells and biomaterials. Remnants from microtia represent a source of cells for auricular reconstruction using tissue engineering. To examine the macromolecular architecture of microtia cartilage and behavior of chondrocytes, in order to enrich the knowledge of this type of cartilage as a cell reservoir...
September 2016: Cell and Tissue Banking
Maimi Ozeki-Satoh, Aoi Ishikawa, Shigehito Yamada, Chigako Uwabe, Tetsuya Takakuwa
We describe the three-dimensional morphogenesis of the middle ear ossicles (MEOs) according to Carnegie stage (CS) in human embryos. Seventeen samples including 33 MEOs from CS18 to 23 were selected from the Kyoto Collection. The primordia of the MEOs and related structures were histologically observed and three-dimensionally reconstructed from digital images. The timing of chondrogenesis was variable among structures. The stapes was recognizable as a vague condensation of the mesenchymal cells in all samples from CS18, whereas the malleus and incus were recognizable at CS19...
October 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
Datao Li, Feng Xu, Ruhong Zhang, Qun Zhang, Zhicheng Xu, Yiyuan Li, Cheng Wang, Tianya Li
BACKGROUND: Although a standard classification system and corresponding reconstruction methods are well described for microtia, establishing a classification system and corresponding surgical strategies for traumatic ear defects is difficult because the size, shape, and local skin conditions of each defect differ considerably. In this article, the authors describe a useful new classification system and corresponding surgical approaches. METHODS: Ear defects were classified into four types according to defect size and surrounding skin conditions...
August 2016: Plastic and Reconstructive Surgery
Olivia A Burnsed, Zvi Schwartz, Katherine O Marchand, Sharon L Hyzy, René Olivares-Navarrete, Barbara D Boyan
UNLABELLED: Limited supplies of healthy autologous or allogeneic cartilage sources have inspired a growing interest in xenogeneic cartilage matrices as biological scaffolds for cartilage tissue engineering. The objectives of this study were to determine if shark and pig cartilage extracellular matrix (ECM) hydrogels can stimulate chondrocytic differentiation of mesenchymal stem cells (MSCs) without exogenous growth factors and to determine if the soluble factors retained by these ECM hydrogels are responsible...
October 1, 2016: Acta Biomaterialia
Kyong-Je Woo, Bo Young Kang, Jeong Jin Min, Jin-Woo Park, Ara Kim, Kap Sung Oh
BACKGROUND: Children with microtia complain of severe postoperative pain during early postoperative days after rib cartilage harvest for auricular reconstruction. The purpose of this study was to evaluate the effects of preventive donor site wound analgesia by intercostal nerve block (ICNB) and catheter-based infusion of local analgesics on postoperative pain after rib cartilage graft for auricular reconstruction in children with microtia. METHODS: In this prospective randomized study, 66 children underwent postoperative pain control using either preventive ICNB followed by catheter-based infusion (33 patients, study group) or intravenous (IV) analgesia alone (33 patients, control group)...
September 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
M F Griffin, Y Premakumar, A M Seifalian, M Szarko, P E M Butler
Currently, autologous cartilage provides the gold standard for auricular reconstruction. However, synthetic biomaterials offer a number of advantages for ear reconstruction including decreased donor site morbidity and earlier surgery. Critical to implant success is the material's mechanical properties as this affects biocompatibility and extrusion. The aim of this study was to determine the biomechanical properties of human auricular cartilage. Auricular cartilage from fifteen cadavers was indented with displacement of 1 mm/s and load of 300 g to obtain a Young's modulus in compression...
July 14, 2016: Annals of Biomedical Engineering
Sharanbasappa Japati, Akash Tiwari, Vardan Maheshwari, Rajan Jadhav
Certain malformations may occur during the embryonic development of the ear. Accessory auricle has a wide range from a small elevation of skin to a large size to resemble an additional auricle, where the latter is called polyotia. This condition is defined as an accessory auricle that is large enough to closely resemble an additional pinna rather than a skin remnant and cartilage. Polyotia, also known as mirror ear or accessory ear, is a type of ear anomaly in the tragus area, but this term refers to substantial anomalies which resemble an accessory ear, unlike a pre-auricular tag...
July 2016: Journal of Maxillofacial and Oral Surgery
Orhan Ozturan, Alper Yenigun, Erol Senturk, Sabri Baki Eren, Fadlullah Aksoy
We evaluated the efficacy of interpositional auricular cartilage grafting for perforation with an endoscopic endonasal approach via a mucosal regeneration technique. In total, 12 patients with symptomatic septal perforations were operated on by way of an endoscopic endonasal approach after an adequately sized cartilage graft was harvested. The graft was inserted between the circumferentially incised and elevated flaps of the perforation and secured by vertical and horizontal nonabsorbable aligning approximation stitches and prolonged placement of silicone splints...
October 2016: Otolaryngology—Head and Neck Surgery
Mari Yamasue, Shin-Ichi Nureki, Hiroyuki Matsumoto, Takamasa Kan, Takehiro Hashimoto, Ryoichi Ushijima, Yuko Usagawa, Jun-Ichi Kadota
Relapsing polychondritis (RP) is a rare systemic disorder characterized by recurrent, widespread chondritis of the auricular, nasal, and tracheal cartilages. IgG4-related disease (IgG4-RD) is a systemic immune-mediated disease characterized by the infiltration of IgG4-bearing plasma cells into systemic organs. Although 25% to 35% of patients with RP have a concurrent autoimmune disease, coexistence of RP and IgG4-RD is rare. We herein report a case of RP complicated by IgG4-RD. A 63-year-old man developed recurrent bilateral ear pain and swelling, recurrent blurred and decreased vision, and migratory multiple joint pain, sequentially within one year...
2016: Tohoku Journal of Experimental Medicine
Mio Matsumoto, Satoshi Onoda, Hiroko Uehara, Yuki Miura, Yuko Katayama, Yoshihiro Kimata
Facioscapulohumeral muscular dystrophy is an autosomal-dominant, slowly progressive myopathy that involves facial, shoulder, and upper arm muscles. Facial muscle atrophy and weakness leads to drooping of the lower lip, which has unfavorable functional and aesthetic outcomes. While there are several methods to correct drooping of the lower lip, including lip resection, free vascularized muscle transfer, and fascia suspension, there are no reports describing the use of an auricular cartilage graft to elevate the lip...
September 2016: Journal of Craniofacial Surgery
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