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1.
J Craniofac Surg ; 2024 Apr 09.
Artigo em Inglês | MEDLINE | ID: mdl-38595199

RESUMO

The aim of this study was to investigate the appearance of the faces of Chinese women in leadership positions through an anthropometric analysis of Women of China from 1949 to 2022. Photographs of cover women of Women of China were gathered and a total of 380 frontal and 101 lateral photographs were collected. The photographs were divided into 3 time phases: phase I (1949-1978): from the launch of Women of China magazine, up until the time of reform and opening; phase II (1978-2010): from the time of reform and opening until when Google China was blocked; and phase III (2010-2022): to the present. The horizontal corneal diameter (11.52 mm) was set as the reference value for the frontal face. The anthropometric results showed the width of the face, midface, and lower face decreased over time. The women at phase I had larger and round faces, smaller and narrower eyes, wider noses, and thicker lips; relatively masculine and hard-working woman image, as the occupations of women were mainly described as workers, farmers, and civil servants. Phase II showed smaller but still round faces, relatively wide-set round eyes, narrower noses, and smaller lips than in phase I; neutral features as skilled workers, engineers, entrepreneurs, civil servants, and researchers. Phase III showed oval faces, almond eyes, narrower noses, smaller full lips, and wider chins, reflecting a process of feminization; working in entertainment, sports, and science. The data from this study might serve as the recommended aesthetic proportions when performing plastic surgical procedures for talented woman.

2.
J Craniofac Surg ; 2024 Feb 16.
Artigo em Inglês | MEDLINE | ID: mdl-38363293

RESUMO

The aim of this study was to investigate the aesthetic characteristics of Chinese beauty through an anthropometric analysis of beauty pageant winners from 1952 to 2021. Photographs from 5 renowned Chinese beauty pageants (Miss World Pageant, Miss Earth Pageant, Miss Universe Pageant, Miss International Pageant, and Miss Chinese Cosmos Pageant) were gathered and a total of 294 frontal and 31 lateral photographs were collected. The photos were divided into 3 time phases: phase I (1952-1977): from the first time when Chinese girls participated in beauty pageants, up until the time of reform and opening; phase II (1978-2002): from reform and opening to the re-opening of the Miss Chinese Cosmos Pageant; phase III (2003-2021): to the present. The horizontal corneal diameter (11.52 mm) was set as the reference value for the frontal face. Among the 35 anthropometric items of frontal faces (26 distances and 9 angles) and 41 anthropometric items of lateral faces (33 distances and 8 angles), 21 anthropometric items (16 distances and 5 angles) and 8 proportional indices of frontal faces showed significant differences. On lateral pictures, 2 angles showed significant differences among the 3 phases. Regarding the anthropometric measurements that decreased across the 3 phases, the width of the face, midface, and lower face exhibited the greatest changes. The lower face width showed the most striking changes, with a decrease from 128.5 to 112.0 mm. The quadratic regression revealed a significant turning point after 1978, coinciding with the period of Chinese reform and opening, which had a profound impact on aesthetics.

3.
J Craniofac Surg ; 2023 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-38055327

RESUMO

The aim of this paper is to present how to free and stretch the palatine vessels from the greater palatine foramen in palatoplasty. After a mucoperiosteal flap is raised, periosteal elevator is passed behind the palatine vessels to detach the periosteum around the vessels. Then, a blunt right-angle instrument is placed behind the palatine vessels, and the vessels are pulled from the foramen in the superior aspect, slightly forward (63 degrees) and medially (19 degrees) according to the direction to the greater palatine canal (GPC). The nasal mucosa is also released from the hard palate and from the lateral pharyngeal wall. After dividing the palatal aponeurosis and elevating the anterior flap, the first suture is inserted through the nasal layer of the mucosa at the level of the posterior border of the hard palate (A suture). The nasal layer is approximated and sutured. After the closure of the buccal layer, the 2 posterior flaps are joined to the small anterior flap. Finally, A suture is tied. In 60 cases of pushback palatoplasty, the palatine vessels were stretched from the greater palatine foramen. In literatures, the length of GPC is 26.97 mm. Anteroposterior diameter of the upper opening of GPC is 3.88 mm. The angle between the vertical plane and the axis of GPC is 19.09 degrees. The angle between the transverse plane and the axis of GPC is 62.63 degrees. Probably, this information is the values obtained in adults. As a matter of fact, similar values were obtained in our study on this subject.

5.
J Craniofac Surg ; 34(7): 2206-2211, 2023 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-37610024

RESUMO

This study aimed to provide anatomical data on the platysma for clinical procedures. The authors obtained 25 specimens from 15 adult Korean cadavers (9 men, 6 women; mean age, 72 years; range, 61-85 years). Lines connecting the gonion with the gnathion (G-GN) and the acromial end (acromial end of the clavicle) with the sternal end (sternal end of the clavicle) were used as references. Modified Sihler staining was used to trace the nerves distributed in the platysma. The superior border values of the platysma were 12.1 ± 2.7 mm, 31.5 ± 5.3 mm, 42.4 ± 5.6 mm, and 61.7 ± 6.4 mm, respectively, for sections 2 through 5 on the G-GN line. The inferior border values of the platysma were 83.6 ± 19.1 mm, 80.1 ± 14.0 mm, 74.8 ± 14.5 mm, 67.2 ± 13.7 mm, and 54.6 ± 7.1 mm, respectively, for the 5 sections on the acromial end of the clavicle-sternal end of the clavicle line. In the hyoid bone, cricoid cartilage, and jugular notch, the mean distance between the bilateral platysma was 14.4 ± 2.2 mm, 22.6 ± 10.6 mm, and 51.1 ± 15.7 mm, respectively. The mean angle at the cervical branch of the facial nerve and the anterior border of the sternocleidomastoid muscle sternal head was 28.7 ± 2.6 degrees and 53.4 ± 7.7 degrees from the G-GN line, respectively. The upper third of the platysma was supplied by branches of the facial artery and submental artery. The middle third was supplied by branches of the occipital artery and received its direct blood supply from branches of the external carotid artery. The lower third was supplied by branches of the transverse cervical artery. The authors hope that the results of this study will be helpful for rejuvenation procedures of the neck.

6.
J Craniofac Surg ; 34(7): e692-e694, 2023 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-37590013

RESUMO

The aim of this study was to determine the exact site of digital compression on the origin of the nasal branch of the ophthalmic artery during filler augmentation, by conducting a review of anatomical literature and examining plastinated specimens. According to 4 textbooks (Gray's Anatomy, Whitnall's Anatomy on the Human Orbit, Wolff's Anatomy, and Duke-Elder's System of Ophthalmology), the dorsal nasal artery leaves the orbit by piercing the orbital septum between the trochlea and the medial palpebral ligament and anastomoses with the angular part of the facial artery. In plastinated arterial specimens, the ophthalmic artery exits the orbit and divides into the supratrochlear artery and the dorsal nasal artery at the upper border of the lacrimal fossa. The dorsal nasal artery then anastomoses with the angular part of the facial artery. Branches of the dorsal nasal artery anastomose with their counterparts on the opposite side. During filler augmentation of the nose, bilateral digital compression is applied to the origins of the nasal branches of the ophthalmic artery, specifically at the point where the ophthalmic artery pierces the orbital septum. Applying compression just above the medial palpebral ligament against the bone, directly above the lacrimal sac, using the index finger and thumb can help prevent the migration of injected droplets to the ophthalmic artery. This straightforward maneuver, grounded in anatomical understanding, aims to prevent the migration of injected droplets to the ophthalmic artery.

7.
Biomed Res Int ; 2022: 1784572, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36567904

RESUMO

This study investigated the thickness of the deltoid muscle and the location of the anterior branch of the axillary nerve (AAN) and posterior circumflex humeral artery (PCHA), with the goal of maximizing the effectiveness of deltoid injections. Forty specimens from 22 adult Korean cadavers were used. A reference line was identified, connecting the anterior point of the deltoid muscle (AP) and the posterior point of the deltoid muscle (PP) on the surface. The midpoint between the AP and PP was used as the origin point (OP). The line connecting the OP and the lowest point of the deltoid tuberosity (DP) was used as the y-axis. The mean distance of the reference line from the AP to PP was 4.7 ± 0.7 cm. The vertical mean length of the deltoid muscle from the OP and DP was 16.1 ± 1.0 cm. At the 3, 5, and 7 cm sites, the thickness of the deltoid muscle was 0.62 ± 0.9, 0.73 ± 0.7, and 1.3 ± 1.1 cm, respectively. Most of the branches of the axillary nerve were concentrated in the third section (4-6 cm, 51%), while the branches of the PCHA were predominantly found in the fourth section (6-8 cm, 69%). The peripheral branches of the AAN entering the muscle were distributed between 2.2 and 9.8 cm from the acromion. The mean number of the peripheral branches of the AAN was 9.6 ± 3.4. In the deltoid muscle, the mean number of peripheral branches of the PCHA was 8.2 ± 2.8. Administering deltoid injections 5-6 cm below the OP is recommended to avoid axillary nerve injury.


Assuntos
Músculo Deltoide , Ombro , Humanos , Axila , Músculo Deltoide/inervação , Artéria Axilar , Cadáver , Úmero
8.
Medicina (Kaunas) ; 58(8)2022 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-36013503

RESUMO

Background and Objectives: The prevalence of obesity among children is increasing and is highlighting many problems. Lack of sleep is common among children and adolescents. Although several studies have investigated sleep duration and overweight and obesity from a sex perspective, data regarding age and sex effects remain limited and inconclusive. This study aimed to evaluate the risk(s) for overweight or obesity according to sleep duration among children and adolescents; to evaluate the effect of short sleep duration on the incidence of overweight/obesity among children and adolescents; and to evaluate sex differences in the risk of overweight or obesity with shorter sleep durations. Materials and Methods: The PubMed database was searched for relevant studies published up to June 30, 2021. Odds ratios for obesity/overweight were estimated for short compared with long sleep duration. Subgroup analysis based on sleep duration, sex, and study location was also performed. Results: The estimated odds ratio for combined obesity and overweight was 1.171 (95% confidence interval (CI) 1.092−1.256) according to short sleep duration. Obesity/overweight with short sleep duration was significantly prevalent in the <6 and 6−10 years' subgroups (odds ratio 1.226 (95% CI 1.083−1.387) and 1.341 (95% CI 1.175−1.530), respectively). Among boys, short sleep duration was significantly correlated with a high occurrence of obesity/overweight (odds ratio 1.294 (95% CI 1.153−1.452)); no such correlation was found among girls. Conclusions: Short sleep duration may increase risk of obesity among children and adolescents, especially those <6 and 6−10 years of age. In the subgroup analysis, the incidence of obesity/overweight for short sleep time revealed significant results among Asians and boys.


Assuntos
Obesidade , Sobrepeso , Adolescente , Índice de Massa Corporal , Criança , Feminino , Humanos , Incidência , Masculino , Obesidade/epidemiologia , Obesidade/etiologia , Sobrepeso/complicações , Prevalência , Fatores de Risco , Sono
9.
Pharmaceutics ; 14(7)2022 Jul 06.
Artigo em Inglês | MEDLINE | ID: mdl-35890317

RESUMO

Trans-anethole is an aromatic compound that has been studied for its anti-inflammation, anticonvulsant, antinociceptive, and anticancer effects. A recent report found that trans-anethole exerted neuroprotective effects on the brain via multiple pathways. Since noxious stimuli may both induce neuronal cell injury and affect synaptic functions (e.g., synaptic transmission or plasticity), it is important to understand whether the neuroprotective effect of trans-anethole extends to synaptic plasticity. Here, the effects of trimethyltin (TMT), which is a neurotoxic organotin compound, was investigated using the field recording method on hippocampal slice of mice. The influence of trans-anethole on long-term potentiation (LTP) was also studied for both NMDA receptor-dependent and NMDA receptor-independent cases. The action of trans-anethole on TMT-induced LTP impairment was examined, too. These results revealed that trans-anethole enhances NMDA receptor-dependent and -independent LTP and alleviates TMT-induced LTP impairment. These results suggest that trans-anethole modulates hippocampal LTP induction, prompting us to speculate that it may be helpful for improving cognitive impairment arising from neurodegenerative diseases, including Alzheimer's disease.

10.
Nature ; 597(7877): 503-510, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34552257

RESUMO

Large, distributed collections of miniaturized, wireless electronic devices1,2 may form the basis of future systems for environmental monitoring3, population surveillance4, disease management5 and other applications that demand coverage over expansive spatial scales. Aerial schemes to distribute the components for such networks are required, and-inspired by wind-dispersed seeds6-we examined passive structures designed for controlled, unpowered flight across natural environments or city settings. Techniques in mechanically guided assembly of three-dimensional (3D) mesostructures7-9 provide access to miniature, 3D fliers optimized for such purposes, in processes that align with the most sophisticated production techniques for electronic, optoelectronic, microfluidic and microelectromechanical technologies. Here we demonstrate a range of 3D macro-, meso- and microscale fliers produced in this manner, including those that incorporate active electronic and colorimetric payloads. Analytical, computational and experimental studies of the aerodynamics of high-performance structures of this type establish a set of fundamental considerations in bio-inspired design, with a focus on 3D fliers that exhibit controlled rotational kinematics and low terminal velocities. An approach that represents these complex 3D structures as discrete numbers of blades captures the essential physics in simple, analytical scaling forms, validated by computational and experimental results. Battery-free, wireless devices and colorimetric sensors for environmental measurements provide simple examples of a wide spectrum of applications of these unusual concepts.


Assuntos
Biomimética , Equipamentos e Provisões Elétricas , Miniaturização/instrumentação , Sementes , Vento , Tecnologia sem Fio/instrumentação , Colorimetria , Monitoramento Ambiental/instrumentação , Monitoramento Ambiental/métodos , Fenômenos Mecânicos , Microfluídica , Vigilância da População/métodos , Rotação
11.
J Craniofac Surg ; 32(2): 771-773, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33705033

RESUMO

ABSTRACT: The aim of this study was to elucidate the relationships between the nasolabial fold and superficial fascia on histology and P45 sheet plastination.Two centimeter width specimen of the nasolabial area were harvested from the skin to periosteum. Then, 10-µm sections were made, stained with Masson trichrome, and observed under a light microscope. Three head and neck specimens were sliced in horizontal sections (46 slices) using P45 sheet plastination (polyester resin corrosion-resistant method designed to preserve biological sectional specimens in situ). Through slicing, bleaching, dehydration, casting, forced impregnation, curing, cutting, and sanding the molds, P45 plastination provided good light transmission, allowing the internal structures within the sheet to be revealed clearly in their intact form.The observations on histology and P45 sheet plastination correlated well. The nasolabial fold consisted of the superficial fatty layer of superficial fascia (SFS). At the beginning of the alar groove level, the nasolabial groove was located on the point where the medial limit of SFS met the levator labii superioris. At the alar base level, the nasolabial groove was located where the medial limit of the SFS met levator labii superioris. At the mouth corner level, the nasolabial groove was located where the medial limit of the SFS met the modiolus, including the orbicularis oris. The superficial fascia became scanty near the nasolabial groove, and the SFS comprised the nasolabial fold.The results of the present study may be helpful for applying subcutaneous dissection or sub-superficial muscular aponeurotic system dissection in rejuvenation of the nasolabial area.


Assuntos
Plastinação , Dissecação , Músculos Faciais , Humanos , Lábio , Sulco Nasogeniano
12.
J Craniofac Surg ; 32(5): 1918-1922, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33645956

RESUMO

ABSTRACT: This study aimed to examine the accurate location and boundary of the parotid gland in Koreans.Forty hemifaces from embalmed cadavers (mean age: 73 years) were studied. The line connecting the porion, gonion, and gnathion was used as a reference line. To measure the boundary of the parotid gland, the Frankfort horizontal line was used as the x-axis, whereas the vertical line passing through the porion was used as the y-axis. All measurements were taken from the lateral side of the face.The parotid gland has a variety of shapes: irregular, reverse triangle, and falciform. In all specimens, the boundary of the parotid gland was located 20 to 60 mm below the Frankfort horizontal line and located 10 mm anterior to the y-axis. On average, the most anterior and posterior distances of the parotid gland from the porion-gonion line were 36.4 ±â€Š13.9 mm and 20.1 ±â€Š10.5 mm, respectively, and the most inferior distance of the parotid gland from the gonion-gnathion line was 9.8 ±â€Š5.8 mm. All specimens of parotid glands were found within an area 20 to 40 mm below the Frankfort horizontal line and 10 mm to the left of the y-axis. The most anterior point of the parotid gland was observed at varying locations. The maximum value of the most anterior point was 61.26 mm; it rarely exceeded the ectocanthion. The most posterior points of the parotid gland were located between the mastoid process and sternocleidomastoid muscle.These results might be useful for preventing injury to the parotid gland during facial rejuvenation procedures.


Assuntos
Face , Glândula Parótida , Idoso , Cabeça , Humanos , Rejuvenescimento , República da Coreia
13.
Sensors (Basel) ; 20(12)2020 Jun 23.
Artigo em Inglês | MEDLINE | ID: mdl-32585870

RESUMO

A theoretical and experimental study on the design-to-performance characteristics of a compression-mode Pb(Zr,Ti)O3-based piezoelectric accelerometer is presented. Using the metamodeling to approximate the relationship between the design variables and the performances, the constituent components were optimized so that the generated electric voltage, representing sensitivity, could be maximized at different set values of the resonant frequency (25-40 kHz). Four kinds of optimized designs were created and fabricated into the accelerometer modules for empirical validation. The accelerometer modules fabricated according to the optimized designs were highly reliable with a broad range of resonant frequency as well as sufficiently high values of charge sensitivity. The fixed (or mounted) resonant frequency was between 16.1-30.1 kHz based on the impedance measurement. The charge sensitivity decreased from 296.8 to 79.4 pC/g with an increase of the resonant frequency, showing an inverse relation with respect to the resonant frequency. The design-dependent behaviors of the sensitivity and resonant frequency were almost identical in both numerical analysis and experimental investigation. This work shows that the piezoelectric accelerometer can be selectively prepared with best outcomes according to the requirements for the sensitivity and resonant frequency, fundamentally associated with trade-off relation.

14.
J Craniofac Surg ; 31(5): 1370-1372, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32282474

RESUMO

The aim of this study is to analyze the medical illustrations that appeared in the Journal of Craniofacial Surgery (JCFS) during the last 3 years (2016-2018).All illustrations in 2676 articles from 24 issues were analyzed.In total, 363 articles (13.6%) contained illustrations (for total of 589 illustrations), and 38 articles (1.4%) cited illustrations from other articles. The number of illustrations increased over time (152 in 2016, 181 in 2017, and 256 in 2018; P = 0.007). The signature of the illustrator appeared in 16.5% of the illustrations, and the illustrator's name was acknowledged in 7.6%. The most frequent contents of the 589 illustrations were surgical procedures (55.4%), followed by anatomy (34.1%). Among the 555 illustrations showing regions of the body, the most frequently illustrated region was the oral cavity (41.6%), followed by the eye and periorbital region (18.4%), the nose (12.4%), and the head (11.4%). Of the 555 illustrations showing tissue, the tissue most frequently depicted was bone (52.8%), followed by soft tissue (42.5%). The mean score for clarity of the intended message was 3.5 ±â€Š1.2. The mean score for artistic skill was 3.2 ±â€Š1.0.As the number of illustrations in JCFS increases, it is increasingly important that information on the illustrators be given. The journal editor should recommend that authors provide the illustrators' information. From the author's perspective, the best illustration is one that tells the story the author wants to convey to readers. Therefore, the crucial point is the expression of the author's goal, rather than the esthetics of the illustration.


Assuntos
Cirurgia Bucal , Humanos , Ilustração Médica
15.
Surg Radiol Anat ; 42(5): 617-626, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-31960087

RESUMO

PURPOSE: The purpose of this study was to evaluate age-related changes of orbital rim in Koreans and construct a reference data set for the aging phenomenon in Asians. METHODS: Data were collected from computed tomography (CT) scans of orbits and facial bones obtained from 107 Korean (55 males and 52 females) at intervals of 0.60 mm. Subjects was categorized according to sex and age as follows: young group (20-35 years) and old group (60 years and above). CT scans were reconstructed via three-dimensional (3D) modeling programs. The most lateral, medial, superior and inferior points of orbital rim were used as reference points. The orbital aperture area in each 3D model was measured using an analytical software program such as 3-Matic. RESULTS: The orbital aperture height showed no overall statistically significant difference (P > 0.05) with age in either sex. Changes were irregular with a combination of decrease and increased components. The mean change did not exceed about 0.1 mm. The orbital aperture area showed no significant change with increasing age in either male or female study populations. CONCLUSIONS: In this study, there was no significant enlargement of the orbital rim with increasing age in Koreans. The measurement data in the present study differ from previous studies involving White subjects, which revealed a significant increase in orbital aperture area.


Assuntos
Envelhecimento/fisiologia , Povo Asiático , Órbita/anatomia & histologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Conjuntos de Dados como Assunto , Feminino , Humanos , Imageamento Tridimensional , Masculino , Pessoa de Meia-Idade , Órbita/diagnóstico por imagem , Órbita/fisiologia , Valores de Referência , República da Coreia , Tomografia Computadorizada por Raios X , População Branca , Adulto Jovem
16.
J Craniofac Surg ; 31(1): 303-305, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31634314

RESUMO

The aim of this study was to investigate whether it is possible to pull the platysma effectively in the medial or lateral direction (medial platysmaplasty and lateral platysmaplasty) and to explore the anatomical basis of those findings.Six hemifaces from 3 fresh cadavers were dissected. After skin removal, the platysma was pulled upward and in the medial or lateral direction with the ulnar side of the palm. Its mobility was checked. In 2 volunteers, using wooden bar, the skin overlying platysma was pulled in superomedial and superolateral direction.The platysma ran diagonally from the acromio-deltoid region to the perioral and submental area. In all hemifaces, the platysma was attached to the mandible along its course. The platysma inserted into the mandibular body. At its medial portion (approximately halfway medially from the mentum to the angle; 4-5 cm), the attachment was so firm that it could not be moved horizontally. The posterolateral portion of the platysma was indirectly attached to the mandible and movable. In cadaver, platysma did not move much when it was pulled in the medial direction. In the lateral direction, however, platysma did move well. In living body, when skin overlying platysma was pulled in superomedial direction and superolateral direction, 3 points marked on mandibular border moved about 1.5-2.0 cm and 2.0-2.5 cm respectively.It is thought that medial platysmaplasty can correct anterior neck deformities and redistribute neck skin mainly in the submental area, while that lateral platysmaplasty can pull the cheek skin in superolateral direction.


Assuntos
Ritidoplastia , Adulto , Cadáver , Queixo/cirurgia , Feminino , Humanos , Masculino , Mandíbula/cirurgia , Pessoa de Meia-Idade , Pescoço/cirurgia
17.
PLoS One ; 14(10): e0222324, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31600209

RESUMO

To enable selection of a safer suspension site to use in face and neck lifting procedures, the spatial relationship between the tympanoparotid fascia and the great auricular nerve should be clarified. In this study, we aimed to elucidate the position of the tympanoparotid fascia and the pathway of the lobular branch of the great auricular nerve traversing the tympanoparotid fascia. Twenty hemifaces from non-preserved bequeathed Korean cadavers (5 males, 7 females; mean age, 77.0 years) were dissected to determine the great auricular nerve distribution close to the tympanoparotid fascia of clinical significance for face and neck lift procedures. We observed the tympanoparotid fascia in all specimens (20 hemifaces). The tympanoparotid fascia was located anteriorly between the tragus and intertragic notch. Regarding the spatial relationship between the tympanoparotid fascia and the great auricular nerve, we found the sensory nerve entering the tympanoparotid fascia in all specimens (100%), and the depth from the skin was approximately 4.5 mm; in 65% of the specimens, the lobular branch was found to run close to the tympanoparotid fascia before going into the earlobe. Provided with relatively safer surface mapping to access the tympanoparotid fascia free of the lobular branch of the great auricular nerve, surgeons may better protect the lobular branch by anchoring the SMAS-platysma flap and thread to the deeper superior and anterior portions of the expected tympanoparotid fascia.


Assuntos
Pavilhão Auricular/inervação , Face/inervação , Músculos do Pescoço/inervação , Pescoço/inervação , Idoso , Cadáver , Procedimentos Cirúrgicos Dermatológicos , Pavilhão Auricular/fisiopatologia , Pavilhão Auricular/cirurgia , Face/cirurgia , Fáscia/inervação , Fáscia/fisiopatologia , Fasciotomia , Feminino , Humanos , Masculino , Pescoço/cirurgia , Músculos do Pescoço/cirurgia , República da Coreia/epidemiologia , Pele/inervação , Retalhos Cirúrgicos
18.
Sensors (Basel) ; 19(15)2019 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-31370167

RESUMO

While seeking to achieve high performances of a bulk piezoelectric acceleration sensor, we investigated the behavior of the design variables of the sensor components and optimized the sensor design using a numerical simulation based on piezoelectric analysis and metamodeling. The optimized results demonstrated that there was an exponential dependency in the trade-off relation between two performance indicators, the electric voltage and the resonant frequency, as induced by the design characteristics of the sensor. Among the design variables, a decrease in the base height and epoxy thickness and an increase in the piezo element's inner diameter had a positive effect on two performances, while the head dimensions (diameter and height) exhibited the opposite effect on them. The optimal sensor designs are proposed within the valid range of resonant frequency (25-47.5 kHz). Our redesign of a commercial reference sensor improved the resonant frequency by 13.2% and the electric voltage by 46.1%.

19.
Korean J Physiol Pharmacol ; 23(1): 81-87, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30627013

RESUMO

Ketamine has long been used as an anesthetic agent. However, ketamine use is associated with numerous side effects, including flashbacks, amnesia, delirium, and aggressive or violent behavior. Ketamine has also been abused as a cocktail with ecstasy, cocaine, and methamphetamine. Several studies have investigated therapeutic applications of ketamine, demonstrating its antidepressant and anxiolytic effects in both humans and rodents. We recently reported that neonatal maternal separation causes enhanced anxiety- and aggressive-like behaviors in adolescent. In the present study, we evaluated how acute and chronic ketamine administration affected the behavioral consequences of neonatal maternal separation in adolescent mice. Litters were separated from dams for 4 hours per day for 19 days beginning after weaning. Upon reaching adolescence (post-natal day 35-49), mice were acutely (single injection) or chronically (7 daily injections) treated with a sub-anesthetic dose (15 mg/kg) of ketamine. At least 1 h after administration of ketamine, mice were subjected to open-field, elevated-plus maze, and resident-intruder tests. We found that acute ketamine treatment reduced locomotor activity. In contrast, chronic ketamine treatment decreased anxiety, as evidenced by increased time spent on open arms in the elevated-plus maze, and remarkably reduced the number and duration of attacks. In conclusion, the present study suggests that ketamine has potential for the treatment of anxiety and aggressive or violent behaviors.

20.
Biomed Res Int ; 2018: 4535031, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30533433

RESUMO

The aim of this study was to accurately identify the distribution of sensory nerve branches running to bursa with mesoscopic dissection and boundaries following the injection of gelatin into the bursa. Eighteen shoulders of 11 Korean soft cadavers (average age, 65 years; age range, 43 - 88 years) were dissected. The most prominent point of greater tubercle of the humerus (GT) was used as a reference point. The horizontal line passing through GT was used as the x-axis while the vertical line passing through the GT was used as the y-axis. Average distances of the anterior, posterior, superior, and inferior from the GT were 1.9±0.6, 2.4±1.3, 2.1±0.7, and 3.2±1.5 cm, respectively. In 15 cases of 18 shoulders, the anterior branch of the axillary nerve was distributed to the subdeltoid bursa that was running posteriorly. The muscular branch of the anterior and middle parts of the deltoid was distributed to the branch of nerve that was running into the subdeltoid bursa. A branch of the posterior cord of brachial plexus was distributed to the subdeltoid bursa that was running anteriorly in three cases. Most of the branches of the axillary nerve were distributed into the posterolateral area. The branches of the posterior cord of brachial plexus were distributed in the anterolateral area. These results might be useful for preventing residual pain on the anterior shoulder region following an injection for the relief of shoulder pain.


Assuntos
Bolsa Sinovial/anatomia & histologia , Bolsa Sinovial/inervação , Músculo Deltoide/anatomia & histologia , Músculo Deltoide/inervação , Animais , Humanos , Úmero/anatomia & histologia , Injeções , Suínos
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