Cartilage reshaping for protruding ears: A prospective long term follow‐up of 32 procedures

Leclère, Franck Marie; Trelles, Mario A.; Mordon, Serge

doi:10.1002/lsm.21126

Cited by 19 publications

(26 citation statements)

References 20 publications

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“…Only seven clinical studies using three different wavelengths are found in the literature: 1,064 nm (Nd:YAG), 1,540 nm (Er:Glass), and 10,600 nm (CO 2 ) . Cumulative fluence ranged from 70 J/cm 2 to 84 J/cm 2 . Power, spot size, pulse duration, and cumulative fluence are summarized in Table for each study.…”

Section: Resultsmentioning

confidence: 99%

“…The mean follow‐up and postoperative values of the superior and middle cephalo‐auricular distances are reported in Table . Complications included mostly dermatitis, asymmetry, and recurrence . In one study using the 1,540 nm Er:Glass, incomplete reshaping was observed in three patients and could be correlated to a lower fluence (70 J/cm 2 ) than usual.…”

Section: Resultsmentioning

confidence: 99%

“…However, this study has uncovered important differences between the three surgical techniques due to the different wavelengths used. The five reports using the 1,540 nm have shown that this wavelength is ideal for cartilage reshaping: 1) The wavelength's penetration depth matches the thickness of the cartilage, allowing for the homogenous heat generation. 2) Contact cooling makes the treatment very tolerable.…”

Section: Discussionmentioning

confidence: 99%

“…The age of the patient and preoperative measure of the cephalo‐auricular angles were sought for each study. In the literature, the superior and middle cephalo‐auricular distances are defined as the distance from the most lateral point of the helical apex to the mastoid . The middle cephalo‐auricular distance is defined as the distance from the ear to the head at the top of the ear canal.…”

Section: Methodsmentioning

confidence: 99%

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Laser‐assisted cartilage reshaping for protruding ears: A review of the clinical applications

et al. 2015

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Laser‐assisted cartilage reshaping for protruding ears: A review of the clinical applications

et al. 2015

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“…When a laser is used for the reshaping of cartilage, posterior skin incision and excision are necessary to reach the cartilage and apply the laser to the cartilage. Absorbable sutures are also placed to the cartilage to fix and maintain the shape of the ear [13,14]. There is no need for anterior skin dissection, reducing the possibility of bruising, haematoma, and skin necrosis.…”

Section: Discussionmentioning

confidence: 99%

Otoplasty with an unusual cartilage scoring approach

Gümüş

Yilmaz

2015

Journal of Plastic Surgery and Hand Surgery

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In Vivo Needle-Based Electromechanical Reshaping of Pinnae

Yau

Manuel

Hussain

et al. 2014

JAMA Facial Plast Surg

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IMPORTANCE Electromechanical reshaping (EMR) is a low-cost, needle-based, and simple means to shape cartilage tissue without the use of scalpels, sutures, or heat that can potentially be used in an outpatient setting to perform otoplasty.OBJECTIVES To demonstrate that EMR can alter the shape of intact pinnae in an in vivo animal model and to show that the amount of shape change and the limited cell injury are proportional to the dosimetry. DESIGN, SETTING, AND SPECIMENSIn an academic research setting, intact ears of 18 New Zealand white rabbits underwent EMR using 6 different dosimetry parameters (4 V for 5 minutes, 4 V for 4 minutes, 5 V for 3 minutes, 5 V for 4 minutes, 6 V for 2 minutes, and 6 V for 3 minutes). A custom acrylic jig with 2 rows of platinum needle electrodes was used to bend ears at the middle of the pinna and to perform EMR. Treatment was repeated twice per pinna, in proximal and distal locations. Control pinnae were not subjected to current application when being bent and perforated within the jig. Pinnae were splinted for 3 months along the region of the bend using soft silicon sheeting and a cotton bolster. MAIN OUTCOMES AND MEASURESThe ears were harvested the day after splints were removed and before euthanasia. Photographs of ears were obtained, and bend angles were measured. Tissue was sectioned for histologic examination and confocal microscopy to assess changes to microscopic structure and cellular viability.RESULTS Treated pinnae were bent more and retained shape better than control pinnae. The mean (SD) bend angles in the 7 dosimetry groups were 55°(35°) for the control, 60°(15°) for 4 V for 4 minutes, 118°(15°) for 4 V for 5 minutes, 88°(26°) for 5 V for 3 minutes, 80°(17°) for 5 V for 4 minutes, 117°(21°) for 6 V for 2 minutes, and 125°(18°) for 6 V for 3 minutes. Shape change was proportional to electrical charge transfer, which increased with voltage and application time. Hematoxylin-eosin staining of the pinnae identified localized areas of cell injury and fibrosis in the cartilage and in the surrounding soft tissue where the needle electrodes were inserted. This circumferential zone of injury (range, 1.5-2.5 mm) corresponded to dead cells on cell viability assay, and the diameter of this region increased with total electrical charge transfer to a maximum of 2.5 mm at 6 V for 3 minutes.CONCLUSIONS AND RELEVANCE Electromechanical reshaping produced shape change in intact pinnae of rabbits in this expanded in vivo study. A short application of 4 to 6 V can achieve adequate reshaping of the pinnae. Tissue injury around the electrodes increases with the amount of total current transferred into the tissue and is modest in spatial distribution. This study is a critical step toward evaluation of EMR in clinical trials.LEVEL OF EVIDENCE NA.

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Cartilage reshaping for protruding ears: A prospective long term follow‐up of 32 procedures

Abstract: LACR appears to be a safe and reproducible method for the treatment of protruding ears. Other applications of this technique, like laser assisted septal cartilage reshaping (LASCR) for septum deviation, have been recently described.

Cited by 19 publications

References 20 publications

Laser‐assisted cartilage reshaping for protruding ears: A review of the clinical applications

Laser‐assisted cartilage reshaping for protruding ears: A review of the clinical applications

Otoplasty with an unusual cartilage scoring approach

In Vivo Needle-Based Electromechanical Reshaping of Pinnae

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