• 제목/요약/키워드: Anatomic study

검색결과 480건 처리시간 0.033초

A Morphological Analysis of the Facial Nerve in Korean Fetuses and Stillborn Infants

  • Lee, Won-Tae;Chung, Youn-Young;Kim, Seok-Won
    • Journal of Korean Neurosurgical Society
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    • 제40권6호
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    • pp.445-449
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    • 2006
  • Objective : The accurate anatomy of the facial nerve is essential for successful surgical outcome. The purpose of the present study is to know such information on the facial nerve from a series of specimens. Methods : This study is based on cadaveric dissection of 41 Korean fetus and stillborn infant and describes anatomical variations of the peripheral branches of the facial nerve that pose a importance in a number of neruosurgical procedure. Results : The branching patterns were classified into six types according to modified Davis classification : the frequencies of occurrence were : type I, 4.9%; type II, 24.4%; type III, 34.1%; type IV, 19.5%; type V, 12.2%; and type VI, 4.9%. Types II, III and IV together accounted for almost 80% of the specimens. Conclusion : Compared to previous adult and western stillborn fetus cadaveric studies, there was no significant difference in the percentage of the types between the subjects in the present study, similar pattern and anatomic distribution.

사상체질의학을 포함한 체질론적 의학이론의 비교 연구 (A Comparative Study for World-wide Constitutional Theories including Sasang Constitutional Medicine)

  • 이종훈;조정효;정광조;손창규
    • 대한한의학회지
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    • 제29권4호
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    • pp.161-170
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    • 2008
  • Objectives: This study aimed at comparing Sasang constitutional medicine(SCM) with other constitutional theories of the world. Methods: From PubMed database, we first searched all papers using the term 'constitution', then filtered those having really constitution-focused papers. Then, they were analyzed to compare each constitutional theory and medicinal practice. Results: There were five constitution-related medicines which have been practiced in medical field: Sasang, iridology, somatotype, dermatoglyphics and Ayurveda. There was the largest number of scientific researches for dermatoglyphics while the smallest number of papers was for SCM. The other three constitutional theories were based on anatomic/histologic difference between types in contrast to SCM and Ayurveda, which relied on inherited functional differences of four or three internal organs. Conclusions: This study simultaneously compared five major constitutional theories currently practiced as medicines in the world. We found that even as SCM seems to have the most potential as therapeutic medicine it should be studied more using scientific methodologies to be a world-wide medicine.

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Analysis of SEER Adenosquamous Carcinoma Data to Identify Cause Specific Survival Predictors and Socioeconomic Disparities

  • Cheung, Rex
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권1호
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    • pp.347-352
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    • 2016
  • Background: This study used receiver operating characteristic curve to analyze Surveillance, Epidemiology and End Results (SEER) adenosquamous carcinoma data to identify predictive models and potential disparities in outcome. Materials and Methods: This study analyzed socio-economic, staging and treatment factors available in the SEER database for adenosquamous carcinoma. For the risk modeling, each factor was fitted by a generalized linear model to predict the cause specific survival. An area under the receiver operating characteristic curve (ROC) was computed. Similar strata were combined to construct the most parsimonious models. Results: A total of 20,712 patients diagnosed from 1973 to 2009 were included in this study. The mean follow up time (S.D.) was 54.2 (78.4) months. Some 2/3 of the patients were female. The mean (S.D.) age was 63 (13.8) years. SEER stage was the most predictive factor of outcome (ROC area of 0.71). 13.9% of the patients were un-staged and had risk of cause specific death of 61.3% that was higher than the 45.3% risk for the regional disease and lower than the 70.3% for metastatic disease. Sex, site, radiotherapy, and surgery had ROC areas of about 0.55-0.65. Rural residence and race contributed to socioeconomic disparity for treatment outcome. Radiotherapy was underused even with localized and regional stages when the intent was curative. This under use was most pronounced in older patients. Conclusions: Anatomic stage was predictive and useful in treatment selection. Under-staging may have contributed to poor outcome.

A retrospective study of mandibular fractures in children

  • Mukhopadhyay, Santanu
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • 제44권6호
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    • pp.269-274
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    • 2018
  • Objectives: The incidence and patterns of mandibular fractures vary by country and population age. This retrospective study evaluated the etiologies and patterns of mandibular fractures in children. Materials and Methods: The clinical records of 89 children (45 males and 44 females) aged 0 to 12 years who presented with mandibular fractures from July 2012 to June 2016 were retrospectively reviewed. The sex, patient age, site of fracture, etiology of trauma, and monthly variations of the fractures were recorded. Descriptive statistics, the z-test and chi-square test were used for statistical analysis and the P-value was set at <0.05. Results: Eighty-nine children (male-to-female ratio 1.02:1) sustained 131 mandibular fractures. Within the study sample, the 6 to 9 year age group most frequently experienced fractures (47.3%). Falls and road traffic accidents (RTA) were the two most common etiological factors that accounted for 44.9% and 24.7% of cases. The condylar fracture was the most common anatomical location (38.9%) followed by the angle (20.6%), parasymphysis (18.3%), body (15.3%), and symphysis (5.3%). A single fracture (51.7%) was more common than multiple fractures (48.3%). The month-wise distribution of mandibular fractures was fairly constant. Conclusion: The condylar region was the most common anatomic site for fractures; in addition, a fall and RTA were the major etiological factors for mandibular fractures. A single fracture was observed in 51.7% of patients while multiple fracture lines accounted for 48.3% of cases.

손가락 신경의 혈관 구조에 대한 해부학적 연구 (Anatomic Study of the Vessels of the Digital Nerves in the Fingers)

  • 이주철;최환준;김준혁;이영만;남두현
    • Archives of Reconstructive Microsurgery
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    • 제21권2호
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    • pp.149-152
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    • 2012
  • Purpose: The vessels of peripheral nerves have been extensively studied since Breidenbach used vascularizd nerve grafts. Tayor and Pinel studied the course and distribution of the vessels of peripheral nerves. However, the vessels of digital nerves are still not well known. The objective of this study was to prove vessels of digital nerves and to investigate the pathway of that. Materials and Methods: 36 patients and 2 fresh human cadavers were studied under the microscope and histologic sections under the light microscope.. Results: We found that digital nerves had own arterioles and venules as well as peripheral nerves. This small vessels of digital nerves paralleled the digital nerves or run in a spiral. Digital nerves were abundantly vascularized throught their length by a succession of vessels and by their repeated divisions and anastomoses. Conclusion: The clinical implications of this results can be discussed in relation to the dissection of nerves, the possibility of vasculized nerve grafts.

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만성 편마비 환자의 상완이두근에 대한 초음파 영상구조의 특성 분석 (Analysis of Ultrasonography on Biceps Brachii Muscle of Hemiplegic Patient)

  • 김현진;양가애;김수현;김태열
    • 대한임상전기생리학회지
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    • 제7권1호
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    • pp.11-15
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    • 2009
  • Purpose : This study aims to comparison of ultrasonography on both sides of biceps brachii muscle of hemiplegic patient. Methods : The biceps brachii muscle of fifteen subjects (5 male, 10 female) with stroke were scanned with ultrasonography at the muscle belly at rest at elbow angles of 90 deg. The echogenicity (density, white area index; WAI, anatomic cross-sectional area; ACSA, volume) of ultrasonography was examined. Results : In the biceps brachii muscle, there were significant differences of density, WAI, ACSA, and volume between affected side and non-affected side. biceps brachii muscle, echogenicity (density, WAI) of the affected side was higher than non-affected side. biceps brachii muscle, echogenicity (ACSA, volume) of the non-affected side was higher than affected side. Conclusion : This study showed that change of skeletal muscle architecture properties occurred biceps brachii muscle of the affected side muscle of hemiplegic patient.

다양한 하악 이부 확장 패턴에 관한 연구 (Biomechanics in various mandibular widening procedures)

  • 태기출;강경화;김경환
    • 대한치과교정학회지
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    • 제35권1호
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    • pp.82-89
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    • 2005
  • 하악 이부 확장은 해부학적으로 가동성인 하악골에서 시행하는 견인골 신장술의 한 형태로 곡면화된 표면과 하악 과두, 좁은 치열궁 형태로 많은 제약을 받게 된다. 본 연구는 이러한 한계를 보완하기 위해 적용되는 다양한 형태의 이부 확장을 이해하기 위해 시도되었다 골 절단선의 위치와 견인 장치의 위치를 다르게 하여. 각 8가지 군으로 구분한 후 이부 확장을 시행하였다. 이부 확장은 견인기의 위치와 골 절단선의 형태에 따라 다르게 이루어지는 결과를 얻었다.

임상가를 위한 특집 3 - 얼굴신경의 해부학 (An anatomic study of the facial nerve)

  • 곽현호;박봉수;김희진
    • 대한치과의사협회지
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    • 제50권10호
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    • pp.624-629
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    • 2012
  • This study examined the anatomical relationships along with the variability of the facial nerve trunk and its branches with an emphasis on the intraparotid connections between the divisions. And histomorphometric observations of the facial nerve branches and fascicles were performed on 40 Korean half-heads. The facial nerve trunk was bifurcated into two main divisions(35/40, 87.5%) and the other five cases were divided into a trifurcation pattern. According to the origin of the buccal branch, the branching patterns of the facia l nerve were classified into four categories. Communications between the facial and auriculotemporal nerve branches were observed in 37 out of 40 cases(92.5%). In the histological observation, the buccal branch had the greatest number of branches(3.47), however the zygomatic branch had the largest diameters(0.93mm). This detailed description of the facial nerve anatomy wi ll provide useful information for surgical procedures such as a tumor resection. a facial nerve reconstruction, autonerve graft. and facelift.

한국인 콧방울의 해부 (Anatomy of the Alar Lobule in Korean Nose)

  • 장현;한승규;김상범;김우경
    • Archives of Plastic Surgery
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    • 제33권3호
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    • pp.269-275
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    • 2006
  • This study is to provide details of the unique anatomical features on the alar lobule region in Korean nose. We hypothesized that the anatomy of this area differs according to the shape of the alar lobule. Based on the prominence and roundness of alar lobules, they were classified into horizontal and vertical types. A total of 20 fresh cadaver noses(10 for each type) were dissected. The anatomical differences between the horizontal and vertical types were investigated by gross and histologic studies. The alar lobule is composed of three layers, i.e., external skin, muscle, and vestibular skin. Profound differences between the two alar lobule types were evident in terms of the volume of the dilator naris anterior muscle, the insertion of the dilator naris posterior muscle, and the thickness of the external skin at the lateral end of the alar circumference. The horizontal type has a greater volume of dilator naris anterior muscle, an additional insertion of the dilator naris posterior muscle, and thicker external skin at the lateral end of the alar circumference than the vertical type. The Korean nose differs anatomically and morphologically from the Caucasian nose. This study shows that there are anatomic differences between the horizontal and vertical types of alar lobules in Korean nose.

전외측대퇴피판을 이용한 구강 재건술 (Anterolateral Thigh Flap for Reconstruction of the Oral Cavity : Anatomic Study and Clinical Application)

  • 최성원
    • 대한치과의사협회지
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    • 제49권9호
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    • pp.535-548
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    • 2011
  • The anterolateral thigh flap(ALT flap) was originally described in 1984 as a septocutaneous nap based on the descending branch of the lateral circumflex artery. This nap has some significant advantages for reconstruction of the head and neck. It can be raised as a subcutaneous flap, a fasciocutaneous nap, or a myocutaneous nap and can resurface large defects in the head and neck. In addition, it has a large and long vascular pedicle, and because of the distance of the donor site from the head and neck, it can easily be harvested with a two-team approach. However, the number and locations of cutaneous perforators vary individually, and thus, it is not widely used because nap elevation is often complicated and time-consuming owing to unexpected anatomical variations. The purposes of this study are to clarify the vascular anatomy and to assess the suitability of anterolateral thigh nap for oral cavity reconstruction in Koreans. In addition, we used anterolateral thigh free nap for oral cavity reconstruction in 20 oral cancer patients from 2006 to 2011. Through our clinical experience, we discuss a series of practical "pearls and pitfalls". Our experience has not only given us new flap choice using anterolateral thigh nap in oral cavity reconstruction, but also given us a new possibility on the applicability of chimeric naps.