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Black JS, Duong RT, Samuel AR, Hui E, Cottler PS. Local estrogen for nonsurgical recontouring of auricular cartilage. J Plast Reconstr Aesthet Surg 2022; 75:2302-2309. [PMID: 35288037 DOI: 10.1016/j.bjps.2022.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/22/2021] [Accepted: 02/13/2022] [Indexed: 11/15/2022]
Abstract
INTRODUCTION 5% of children are born with auricular deformities. Permanent recontouring can be achieved through splinting during early infancy. Beyond this time, splinting is ineffective, and patients require surgical correction. Neonatal cartilage malleability is hypothesized to be secondary to retained maternal estrogens, increasing hyaluronic acid concentration. In this article, we evaluate the efficacy of local estrogen treatments for the nonsurgical recontouring of mature auricular cartilage. METHODS Ears of New Zealand rabbits were folded and splinted and then were randomly assigned to an experimental group, n = 10 (injected estrogen, topical estrogen, saline, or untreated). Treatment ears received injected estrogen or saline twice weekly or topical estrogen daily for 4 weeks. Two weeks post-treatment, splints were removed, and ear angles were measured. Biopsies were taken for histologic and mechanical analysis, and systemic estrogen levels were assayed. RESULTS Ear angles stabilized by 9 days post-splinting. Topical estrogen led to a significantly smaller resting angle (121.6° ± 13.5°) compared with saline and control (135.9° ± 11.2° and 145.3° ± 13.0°, respectively). Injected estrogen led to the most pronounced angle decrease (64.5° ± 35.3°). Ears injected with estrogen also showed a significant increase in cartilage thickness. Hyaluronic acid concentration was increased in both estrogen treatment groups compared with saline. At 3 weeks post-treatment, there was no significant differences in the elastic modulus of the cartilage or serum estrogen levels among the groups. CONCLUSION Results show the potential result of local estrogen treatment to achieve a stable nonsurgical remodeling of mature auricular cartilage. Further study is needed to evaluate the molecular mechanism and improve the transdermal estrogen delivery to optimize treatment regimen.
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Affiliation(s)
- Jonathan S Black
- Department of Plastic Surgery, University of Virginia Medical Center, Charlottesville, VA, United States
| | - Ryan T Duong
- Department of Plastic Surgery, University of Virginia Medical Center, Charlottesville, VA, United States
| | - Ankhita R Samuel
- Department of Plastic Surgery, University of Virginia Medical Center, Charlottesville, VA, United States
| | - Erica Hui
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Patrick S Cottler
- Department of Plastic Surgery, University of Virginia Medical Center, Charlottesville, VA, United States.
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Dinis J, Junn A, Long A, Phillips S, Reategui A, Kaplan A, Alperovich M. Non-Surgical Correction of Congenital Ear Anomalies: A Critical Assessment of Caretaker Burdens and Aesthetic Outcomes. Aesthetic Plast Surg 2022; 46:898-906. [PMID: 34608514 DOI: 10.1007/s00266-021-02610-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 09/19/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Congenital ear anomalies result from cartilage and skin compression in utero. They can be corrected in infancy before the cartilage hardens and loses its malleability. Caretaker burden of ear molding and its impact on esthetic outcomes has not been studied. METHODS Demographic and procedural variables were retrospectively collected for infants who underwent ear molding. Parents were surveyed regarding their experience, caretaker burden, and esthetic outcome. Outside physicians were provided with pre- and post-treatment photographs and asked to rate outcomes. A Likert scale was developed for responses and converted to a numeric score from 1 to 5 with 5 as the most desirable. RESULTS Seventy-four patients comprising 121 ears were included. Mean age at treatment was 20.1 ± 21.4 days with treatment duration of 21.1 ± 7.7 days. Parental participation in the survey was 70.1%. Questions that queried parents' experiences revealed a "very positive" experience with minor burden related to bathing and cleaning (Mean Likert Score 4.1, Range 1-5). Favorable parent-reported outcomes were obtained regarding anticipated social distress (4.28, 1-5), satisfaction with results (4.27, 1-5), and perception of final appearance (4.18, 1-5). Physician assessments of esthetic outcomes were slightly lower, but favorable between "somewhat effective" and "very effective" (3.46, 1-5). Earlier treatment trended favorably, but did not reach significance. Ear malformations had higher parent-reported satisfaction than ear deformations (4.75 ± 0.46 vs 4.21 ± 1.25, p = 0.025). CONCLUSION Despite the additional obligation for new parents, infant ear molding is rated low in terms of caretaker burden. Esthetic outcomes are excellent as assessed by parents and physicians. However, caretakers reported higher esthetic outcomes than physician evaluations. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
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Affiliation(s)
- Jacob Dinis
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Yale University School of Medicine, 330 Cedar Street, Boardman Building, 3rd Floor, New Haven, CT, 06519, USA
| | - Alexandra Junn
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Yale University School of Medicine, 330 Cedar Street, Boardman Building, 3rd Floor, New Haven, CT, 06519, USA
| | - Aaron Long
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Yale University School of Medicine, 330 Cedar Street, Boardman Building, 3rd Floor, New Haven, CT, 06519, USA
| | - Sarah Phillips
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Yale University School of Medicine, 330 Cedar Street, Boardman Building, 3rd Floor, New Haven, CT, 06519, USA
| | - Alvaro Reategui
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Yale University School of Medicine, 330 Cedar Street, Boardman Building, 3rd Floor, New Haven, CT, 06519, USA
| | - Anna Kaplan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Yale University School of Medicine, 330 Cedar Street, Boardman Building, 3rd Floor, New Haven, CT, 06519, USA
| | - Michael Alperovich
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Yale University School of Medicine, 330 Cedar Street, Boardman Building, 3rd Floor, New Haven, CT, 06519, USA.
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Bhamare N, Tardalkar K, Khadilkar A, Parulekar P, Joshi MG. Tissue engineering of human ear pinna. Cell Tissue Bank 2022; 23:441-457. [PMID: 35103863 DOI: 10.1007/s10561-022-09991-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/06/2022] [Indexed: 12/30/2022]
Abstract
Auricular deformities (Microtia) can cause physical, social as well as psychological impacts on a patient's wellbeing. Biofabrication of a complex structure such as ear pinna is not precise with currently available techniques. These limitations can be overcome with the help of tissue engineering. In this article, the authors presented molding and three dimensional (3D) printing to generate a flexible, human size ear pinna. The decellularization of goat ear cartilage protocol and bioink alkaline digestion protocol was followed to yield complete removal of all cellular components without changing the properties of the Extra Cellular Matrix (ECM). Decellularized scaffold used in molding technology and 3D printing technology Computer-Aided Design /Stereolithography (CAD/STL) uses bioink to construct the patient-specific ear. In vivo biocompatibility of the both ear pinnae showed demonstrable recellularization. Histology and scanning electron microscopy analysis revealed the recellularization of cartilage-specific cells and the development of ECM in molded and 3D printed ear pinna after transplantation. Both the techniques provided ideal results for mechanical properties such as elasticity. Vascular Associated Protein expression revealed specific vasculogenic pattern (angiogenesis) in transplanted molded pinna. Chondrocyte specific progenitor cells express CD90+ which highlighted newly developed chondrocytes in both the grafts which indicated that the xenograft was accepted by the rat. Transplantation of molded as well as 3D ear pinna was successful in an animal model and can be available for clinical treatments as a medical object to cure auricular deformities.
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Affiliation(s)
- Nilesh Bhamare
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kasaba Bawada, 416 006, Kolhapur, Maharashtra, India.
| | - Kishor Tardalkar
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kasaba Bawada, 416 006, Kolhapur, Maharashtra, India
| | - Archana Khadilkar
- Department of Biotechnology Engineering, KIT's College of Engineering (Autonomous), Kolhapur, India
| | - Pratima Parulekar
- Department of Biotechnology Engineering, KIT's College of Engineering (Autonomous), Kolhapur, India
| | - Meghnad G Joshi
- Department of Stem Cells and Regenerative Medicine, D. Y. Patil Education Society (Deemed to be University), Kasaba Bawada, 416 006, Kolhapur, Maharashtra, India. .,Stem Plus Biotech Pvt. Ltd.Sangli Miraj Kupwad Commercial Complex, C/S No. 1317/2, Near Shivaji Maharaj Putla, Bus Stand Road,Gaon Bhag, 416416, Sangli, MS, India.
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Manji I, Durlacher K, Verchere C. Correction of neonatal auricular deformities with DuoDERM: A simple technique. Paediatr Child Health 2020; 26:270-273. [PMID: 34336053 DOI: 10.1093/pch/pxaa102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 06/22/2020] [Indexed: 11/15/2022] Open
Abstract
Ear moulding in neonates has been shown to successfully correct congenital auricular anomalies. There are several available moulding techniques. However, commercially available moulding devices (e.g., EarWell and Ear Buddy) can be costly, and their alternatives have limited customizability. We present a technique using cost-effective and customizable materials for moulding common anomalies (Stahl's ear, constricted ear, and prominent ear). DuoDERM Extra-thin, Steri-strips, and 3M Kind Removal Silicone tape are used to splint the ear in a preferred position. The DuoDERM is rolled into a putty, placed in the ear, and secured with tapes. This treatment is initiated in the clinic, with weekly splint changes carried out at home by caregivers, and intermittent follow-up appointments. DuoDERM moulding is a safe, inexpensive, highly customizable, and simple way to correct auricular deformities. Primary physicians/paediatricians should embed moulding into their practice, starting treatment as early as possible in the neonatal period.
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Affiliation(s)
- Inayah Manji
- Division of Pediatric Plastic Surgery, Department of Surgery, University of British Columbia, Vancouver, British Columbia.,Faculty of Medicine, University of British Columbia, Vancouver, British Columbia
| | - Kim Durlacher
- Department of Occupational Science & Occupational Therapy, University of British Columbia, Vancouver, British Columbia.,Occupational Therapy Department, British Columbia, Children's Hospital, Vancouver, British Columbia
| | - Cynthia Verchere
- Division of Pediatric Plastic Surgery, Department of Surgery, University of British Columbia, Vancouver, British Columbia.,Division of Plastic Surgery, Department of Surgery, British Columbia Children's Hospital, Vancouver, British Columbia
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