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Silicone Implant Sandwiched between Intact Nasal Bones with Fractured Nasal Bone Segments
우수현,김우섭,김한구,배태희 대한두개안면성형외과학회 2017 Archives of Craniofacial Surgery Vol.18 No.1
As the number of people who have undergone augmentation rhinoplasty has increased recently, nasal fractures are becoming more common after rhinoplasty. A silicone implant can affect the nasal fracture pattern, but there is no significant difference in treatment methods commonly. A 28-year-old female who had undergone augmentation visited our clinic with a nasal fracture. Computed tomography revealed that the silicone implant was sandwiched between the intact nasal bones with fractured bone fragments. In this case, open reduction was inevitable and a new silicone implant was inserted after reduction. Migration of the silicone implant beneath the nasal bone is a very rare phenomenon, but its accurate prevention and diagnosis is important because a closed reduction is impossible.
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우수현,김효정,하영철 한국풍공학회 2017 한국풍공학회지 Vol.21 No.3
강풍으로 인한 구조물의 파괴는 한계상태 이상의 풍하중으로 인한 파괴와 한계상태 보다 레벨은 낮지만 반복적인 풍하중에 의한 피로파괴로 나눌 수 있다. 한계상태설계 파괴에 대한 연구는 많이 이루어져 있으나, 강풍에 의한 피로파괴에 관한 연구는 드물다. 본 논문은 강풍에 의한 피로파괴 해석 시 사용할 수 있는 풍속의 계속시간에 관한 모델을 기상관측소로부터 획득한 자료를 사용하여 확률통계방법에 의하여 제시한 것이다. 강풍의 발생성인은 한국의 기상 특성에 따라 태풍, 전선풍, 계절풍으로 나누었고, 년최대풍 속자료에 대한 통계적인 처리는 극치Ⅰ형 누적분포함수를 사용하였다. 1회 강풍이 불었을 때 어떤 레벨에서 풍속의 계속시간은 풍속의 확률밀도함수와 최대풍속값에 의해 일반화된 누적신간의 곱으로 각 강풍의 발생성인에 따라 주어진다. In general, structural failures due to strong wind shall be divided into two categories, the one is failure by limit state wind loadings, the other is the cumulative fatigue failure under repeated wind loadings which have values less than that of limit state wind loadings. Various research results for limit state design were provided to engineers, however a study on the cumulative fatigue failure of structures under strong winds was rare. This paper aims at providing empirical models for wind-duration of strong wind to those who estimate fatigue damage of structures. The empirical models for wind-duration of strong wind were suggested by probabilistic analysis of meteorological wind speed data. The origin of occurrence of strong winds were divided into three types, Typhoon, Frontal system storm and Monsoon, due to the characteristics of climatical conditions in Korean. The statistical analysis on annual extreme wind speed data was investigated by cumulative density function of Type I. Empirical models of wind-duration of arbitrary wind speed level attacked one strong wind were constituted to the product of cumulative time generalized by maximum wind speed and probabilistic density function of wind speed in according to the origin of occurrence.
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A Rare Case of Kimura Disease with Bilateral Parotid Involvement
우수현,김한구,김우섭,배태희,김미경 대한성형외과학회 2017 Archives of Plastic Surgery Vol.44 No.5
Kimura disease is a rare idiopathic chronic inflammatory disorder. It typically presents in the head and neck area, whereas bilateral involvement is unusual. Its diagnosis requires it to be differentiated from other inflammatory diseases and from head and neck tumors. Treatment methods include conservative management, steroid administration, radiotherapy, and surgery; however, no single treatment of choice has been established. Herein, we report an unusual presentation of Kimura disease with bilateral parotid involvement. This case was treated by surgical excision.
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우수현,강현일,최우정,김은기 한국유방암학회 2023 Journal of breast cancer Vol.26 No.4
Pseudoangiomatous stromal hyperplasia (PASH) is a rare idiopathic proliferative mesenchymal breast disease related to hormonal imbalance, and thus extremely rare in children and adolescents. In addition, PASH manifests as a bilateral gigantomastia in some cases with no established cause or treatment. Here, we report a case of a rapidly developed PASH presenting with bilateral gigantomastia in a 14-year-old premenarchial female patient. Considering the patient’s age and emotions and the need for nipple-areolar complex repositioning, we performed reduction mammoplasty rather than total mastectomy despite the possibility of recurrence. Although some masses could not be completely removed, no complications, such as infection, wound dehiscence, or hematoma occurred postoperatively. The patient was stable during the 18-month follow-up period, although an evidence of recurrent and residual disease was noted upon ultrasonography.
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우수현,Young Chul Kim,Tae Suk Oh 대한두개안면성형외과학회 2024 Archives of Craniofacial Surgery Vol.25 No.1
The facial nerve stimulates the muscles of facial expression and the parasympathetic nerves of the face. Consequently, facial nerve paralysis can lead to facial asymmetry, deformation, and functional impairment. Facial nerve palsy is most commonly idiopathic, as with Bell palsy, but it can also result from a tumor or trauma. In this article, we discuss traumatic facial nerve injury. To identify the cause of the injury, it is important to first determine its location. The location and extent of the damage inform the treatment method, with options including primary repair, nerve graft, cross-face nerve graft, nerve crossover, and muscle transfer. Intracranial proximal facial nerve injuries present a challenge to surgical approaches due to the complexity of the temporal bone. Surgical intervention in these cases requires a collaborative approach between neurosurgery and otolaryngology, and nerve repair or grafting is difficult. This article describes the treatment of peripheral facial nerve injury. Primary repair generally offers the best prognosis. If primary repair is not feasible within 6 months of injury, nerve grafting should be attempted, and if more than 12 months have elapsed, functional muscle transfer should be performed. If the affected nerve cannot be utilized at that time, the contralateral facial nerve, ipsilateral masseter nerve, or hypoglossal nerve can serve as the donor nerve. Other accompanying symptoms, such as lagophthalmos or midface ptosis, must also be considered for the successful treatment of facial nerve injury.
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중저층건축물 관통형 필로티의 내풍설계를 위한 풍압계수 산정
우수현,신동현,류혜진,하영철 한국풍공학회 2019 한국풍공학회지 Vol.23 No.2
최근 필로티는 공간의 활용도나 미관상의 이유로 많이 사용되고 있다. 필로티는 외벽보다는 안쪽에 위치하나 외기에 접하는 형태로 강한 바람이 불 때, 바람길이 형성되고 강한 압력을 받아 필로티의 천장 및 벽면 부분의 외장재가 탈락하는 피해가 발생한다. 현재 건축구조기준(KBC-2016)에서는 필로티 건축물에 대한 천장 및 벽면의 풍압계수가 제시되어있지 않아 필로티 부분의 주골조 및 외장재에 대한 구조설계에 어려움이 있다. 이에 본 논문에서는 저층구조물의 관통형 필로티에 대한 풍압실험을 진행하여 풍압계수를 산출하였다. 실험 모형의 변수는 필로티의 높이와 폭으로 두었으며 변수에 따라 풍압계수를 산정하고 풍압분포의 변화를 비교·분석하 였다. 따라서, 필로티의 여러 변수 중 가장 불리한 풍압계수를 제시하여 이를 주골조와 외장재 설계 시 기초자료로 제공하고자 한다. Recently, the piloti is widely used for space utilization and cosmetic reasons. The piloti is located inside rather than the outer wall, but it is contact with the outside air. Therefore, when the strong winds are blown, a wind road is formed and under strong pressure, the ceiling of piloti or wall falls. In the present KBC-2016, the pressure coefficient of ceiling and wall for piloti is not presented. For this reason, the structural engineers have a difficulty in structural design for the main frame and cladding of the piloti. In this paper, the wind pressure coefficient was calculated by the wind pressure test for the penetration piloti of the low-rise building. The variables of the experimental model are the height and width of the piloti. The wind pressure coefficient is calculated according to the variables and the tendency of wind pressure distribution are compared and analyzed. Therefore, the most disadvantageous wind pressure coefficient among the variables of piloti is presented and it is provided as basic data for the main frame and cladding design.
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