- The Stensen's duct line : a landmark in parotid duct and gland injury and surgery. A prospective anatomical, clinical and radiological study. [Journal Article]
- JSJ Stomatol Oral Maxillofac Surg 2019 Apr 11
- CONCLUSIONS: This study sought to assess the relevance of the PDL, which is not parallel to the PD that runs a «S-Shape» curve when crossing the PDL. It could be used when evaluating a potential ductal injury in trauma management and when locating proximal parotid lithiasis during sialendoscopy.
- Dependency relationships among ear characters in a Spanish sample, its forensic interest. [Journal Article]
- LMLeg Med (Tokyo) 2019 Mar 18; 38:14-24
- The aim of this paper is to provide information on dependency relationships between the morphological characters of the external ear and their importance in physical identification. At present, there…
The aim of this paper is to provide information on dependency relationships between the morphological characters of the external ear and their importance in physical identification. At present, there is a lack of population data in this field, and little research has been published. Our study sample consisted of 281 Spanish university students of European descent aged between 18 and 31 years old. We analysed a total of 562 ears. For a large number of characters, we found a dependency between anatomically related characters, confirming our hypothesis. For example, we found relationships between ear shape and protrusion, between rolling of the superior and posterior helix, and between the upper and lower parts of the scapha. However, our results also indicated that some anatomically related characters did not present relationships. Thus, we found no dependency between contour shape of the supero-posterior helix and rolling of the posterior helix or between intertragic incisure shape and tragus or antitragus shape. In addition, we found that some characters that are not anatomically related also showed relationships. These included rolling of the superior helix and intertragic incisure shape, and contour shape of the superior helix and the inferior part of the scapha. These results are of great importance and should be taken into account in forensic applications.
- Anesthetization of the tragus and antitragus to utilize skin hooks for full visualization of the auricular concha. [Journal Article]
- JAJ Am Acad Dermatol 2018 Nov 14
- Helix free otoplasty for correction of prominent ear. [Journal Article]
- AJAsian J Surg 2019; 42(5):621-627
- CONCLUSIONS: Helical free otoplasty technique addresses the deformity through a posterior approach with under vision correction. It has very low incidence of complications, high patient's satisfactions, no visible scars and no recurrences. It is a simple, short duration procedure, reliable and good option for correction of prominent ear.
- What Is the Lobular Branch of the Great Auricular Nerve? Anatomical Description and Significance in Rhytidectomy. [Journal Article]
- PRPlast Reconstr Surg 2017; 139(2):371e-378e
- CONCLUSIONS: This study delineates the location of the lobular branch of the great auricular nerve. The authors translate these findings into a quick and simple intraoperative marking, which can assist surgeons in avoiding lobular branch injury during rhytidectomy dissection.
- Sensation loss after superficial parotidectomy: A prospective controlled multicenter trial. [Controlled Clinical Trial]
- HNHead Neck 2017; 39(3):520-526
- CONCLUSIONS: Preservation of the posterior branch of the GAN led to significantly better improvement of sensation in the lobule and antitragus, and should be recommended during parotidectomy. © 2017 Wiley Periodicals, Inc. Head Neck 39: 520-526, 2017.
- Patient reported outcome measures in microtia surgery. [Journal Article]
- JPJ Plast Reconstr Aesthet Surg 2017; 70(3):416-424
- CONCLUSIONS: The measures used in this study provide an objective assessment of patient reported experience and outcome that in the future can be used as a means of targeted quality improvement and to benchmark care nationally.
- Biomechanical Characterisation of the Human Auricular Cartilages; Implications for Tissue Engineering. [Journal Article]
- ABAnn Biomed Eng 2016; 44(12):3460-3467
- Currently, autologous cartilage provides the gold standard for auricular reconstruction. However, synthetic biomaterials offer a number of advantages for ear reconstruction including decreased donor …
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. Histological analysis of the auricle was conducted according to glycoprotein, collagen, and elastin content. The compression modulus was calculated for each part of the auricle with the tragus at 1.67 ± 0.61 MPa, antitragus 1.79 ± 0.56 MPa, concha 2.08 ± 0.70 MPa, antihelix 1.71 ± 0.63 MPa, and helix 1.41 ± 0.67 MPa. The concha showed to have a significantly greater Young's Elastic Modulus than the helix in compression (p < 0.05). The histological analysis demonstrated that the auricle has a homogenous structure in terms of chondrocyte morphology, extracellular matrix and elastin content. This study provides new information on the compressive mechanical properties and histological analysis of the human auricular cartilage, allowing surgeons to have a better understanding of suitable replacements. This study has provided a reference, by which cartilage replacements should be developed for auricular reconstruction.
- A genome-wide association study identifies multiple loci for variation in human ear morphology. [Journal Article]
- NCNat Commun 2015 Jun 24; 6:7500
- Here we report a genome-wide association study for non-pathological pinna morphology in over 5,000 Latin Americans. We find genome-wide significant association at seven genomic regions affecting: lob…
Here we report a genome-wide association study for non-pathological pinna morphology in over 5,000 Latin Americans. We find genome-wide significant association at seven genomic regions affecting: lobe size and attachment, folding of antihelix, helix rolling, ear protrusion and antitragus size (linear regression P values 2 × 10(-8) to 3 × 10(-14)). Four traits are associated with a functional variant in the Ectodysplasin A receptor (EDAR) gene, a key regulator of embryonic skin appendage development. We confirm expression of Edar in the developing mouse ear and that Edar-deficient mice have an abnormally shaped pinna. Two traits are associated with SNPs in a region overlapping the T-Box Protein 15 (TBX15) gene, a major determinant of mouse skeletal development. Strongest association in this region is observed for SNP rs17023457 located in an evolutionarily conserved binding site for the transcription factor Cartilage paired-class homeoprotein 1 (CART1), and we confirm that rs17023457 alters in vitro binding of CART1.
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- Management of First Branchial Cleft Anomalies via a Cartilage-Splitting Technique. [Journal Article]
- OHOtolaryngol Head Neck Surg 2015; 152(6):1149-51
- First branchial cleft anomalies are uncommon lesions that often present as periauricular infections. They have high recurrence rates, due in part to scarring secondary to prior infections and their m…
First branchial cleft anomalies are uncommon lesions that often present as periauricular infections. They have high recurrence rates, due in part to scarring secondary to prior infections and their management. These lesions have a close relationship with the facial nerve, and most authors recommend its identification and dissection because of this relationship. Nonetheless, facial nerve palsy has been reported in up to 15% of cases. We describe a novel technique for the management of first branchial cleft anomalies. Such lesions that presented in an infra- or postauricular location were approached via an incision through the cartilage of the pinna, between the tragus and antitragus. This technique affords direct access to the lesion without the need for facial nerve dissection. Six patients were treated. Five had prior surgery, including 3 with previous attempts at excision. There were no complications. The median follow-up was 35 months. One patient developed a recurrence.