Autologous Bone Marrow Mesenchymal Cell Induced Chondrogenesis for the Treatment of Osteoarthritis of Knee

허성우,Asode Ananthram Shetty,김장묵,조미라,김선애,양시영,김영주,Palaksha Kanive Javaregowda,최남용,강진,김석중 한국조직공학과 재생의학회 2016 조직공학과 재생의학 Vol.13 No.2

Healthy and high quality of life has become the main issue with increasing human life span. Many biological treatments for osteoarthritis of the knee have been tried with limited success. We compared data from 7 patients who underwent total knee arthroplasty and 46 patients who underwent autologous bone-marrow mesenchymal cell induced chondrogenesis (MCIC) for osteoarthritis of grade IV of the Kellgren-Lawrence classification and grade IV of modified Outerbridge classification from 50 to 65 years of age. Clinical evaluation of the 2 groups showed significant improvement in the mean telephone Knee Society Scoring system (tKSS)-A (pain) and tKSS-B (function) scores throughout the postoperative follow-up period. There was no difference in the patients’ satisfaction between the 2 groups. MCIC is a treatment option at least for delaying disease progression of osteoarthritis of the knee.

혼밥족의 지각된 영역성이 레스토랑 재방문의도에 미치는 영향

허성우,이준혁,이하진,정호성 한국식공간학회 2024 식공간연구 Vol.19 No.3

This study focused on analyzing the effect of the increase in single-person households and the corresponding increase in the number of people eating alone in the food service industry. With many restaurants still passive in providing single-person dining spaces, this study attempted to contribute to the strategic improvement of the food service industry by empirically examining the relationship between perceived territoriality, perceived value, satisfaction, and intention to revisit among the people eating alone. Research data were collected through an online survey of individuals with experience of eating alone nationwide, and a total of 254 valid responses were used for analysis. Specifically, the structural equation modeling was conducted through the PLS program. The primary findings derived from testing the theoretical model are as follows: First, the perceived territoriality of the people eating alone positively influences both perceived value and satisfaction, while it does not have a direct and significant effect on the intention to revisit. Second, perceived value has a strong effect on satisfaction and intention to revisit. Third, satisfaction has a direct and positive effect on the intention to revisit. This study contributed to developing strategies for the food service industry to increase profitability by understanding the characteristics and needs of the "Honbab" people and seeking ways to respond to them. 본 연구는 1인 가구의 증가와 이에 따른 혼밥족의 증가가 외식 산업에 미치는 영향을 분석하는 데 초점을 맞추었다. 많은 레스토랑들이 아직도 1인 식사 공간의 제공에 소극적인 상황에서, 본 연구는 혼밥족의 지각된 영역성, 지각된 가치, 만족, 재방문 의도 간의 관계를 실증적으로 검토함으로써 외식 산업의 전략적 개선에 기여하고자 하였다. 연구 데이터는 전국적으로 혼밥 경험이 있는 개인들을 대상으로 한 온라인 설문을 통해 수집되었으며, 총 254개의 유효한 응답을 분석에 활용하였다. 이론적 모델을 바탕으로 수행된 분석(PLS프로그램을 통한 구조 방정식 분석)을 통해 다음과 같은 주요 발견을 도출하였다: 첫째, 혼밥족의 지각된 영역성이 지각된 가치와 만족에 긍정적으로 기여하였으나, 재방문 의도에는 직접적인 유의미한 영향을 미치지 않았다. 둘째, 지각된 가치는 만족과 재방문 의도에 강력한 영향을 미쳤다. 셋째, 만족은 재방문 의도에 직접적이고 긍정적인 영향을 미쳤다. 이 결과들은 외식 산업에서 혼밥족을 대상으로 한 서비스 전략을 개발하고 관리하는 방법에 대한 이론적 및 실무적 시사점을 제공한다. 본 연구는 외식 산업이 혼밥족의 특성과 요구를 이해하고 이에 부응하는 방안을 모색함으로써 수익성을 높일 수 있는 전략을 개발하는 데 기여하였다.

한국 민주주의 20년, 개혁주의 젠더정치학의 성과와 한계

허성우 민주화운동기념사업회 2007 민주화운동기념사업회 연구소 학술행사 자료집 Vol.2007 No.-

차량의 횡방향 각속도를 고려한 실시간 장애물 회피 동작계획

허성우,박태형 제어·로봇·시스템학회 2019 제어·로봇·시스템학회 논문지 Vol.25 No.2

This paper proposes a method for motion planning of a vehicle considering lateral angular velocity constraints. Motion planning is very important for the safe travel of an autonomous vehicle. In this work, the steering angle of the vehicle is included in the cost function in order to achieve smooth operation of the vehicle. and path optimization uses dynamic programming to select the paths that satisfy the constraint with the least cost. After selecting the optimal path, the longitudinal velocity profile is determined using a fuzzy speed controller. The steering input of the vehicle and the distance from the obstacle to follow the path are used as the input of the fuzzy speed controller, and the controller provides longitudinal acceleration and deceleration of the vehicle as the output. Experiments were conducted for three scenarios using vehicles equipped with Lidar, IMU, GPS, and cameras. Experimental results show that the proposed motion plan generates a path within the steering constraint condition of the vehicle and runs effectively.

천공지기저 프로펠러 피판술을 이용한 하지 재건

허성우,배재호,송주현,이주엽,Huh, Sung-Woo,Bae, Jae-Ho,Song, Joo-Hyoun,Lee, Joo-Yup 대한미세수술학회 2012 Archives of reconstructive microsurgery Vol.21 No.2

Purpose: To report the clinical results of the perforated-based propeller flap for lower extremity soft tissue reconstruction. Materials and Methods: Between January 2010 and June 2012, a total of 16 defects in the lower extremities were covered with perforator-based propeller flaps. Retrospective data for location and size of the defect, flap dimension, pedicle artery, pedicle rotation, complications were obtained. Results: Peroneal artery-based perforator flap were used in eleven cases, posterior tibial artery-based perforator flap in two cases, anterior tibial artery-based perforator flap in one case and medial plantar artery-based perforator flap in two cases. The average size of the flaps was $63cm^2$. The marginal skin necrosis of the flaps as a complication was developed in two cases, one of which was covered with split-thickness skin graft. There were no functional deficits from the donor site. Conclusion: For the reconstruction of lower extremities, the perforator-based propeller flap could be a reasonable alternative as it is a simple, safe and versatile technique.

NP-완전 문제를 위한 페트리넷 모델링

허성우 東亞大學校 附設 情報通信硏究所 1997 情報通信硏究所論文誌 Vol.5 No.1

In this paper, we show that some graph-related NP-complete problems can be represented by Petri nets moldel and that the question for an NP-complete problem can be changed to a reachability problem for the corresponding Petri net. All problems in the paper are modeled with low level Petri nets. Every modeling has been dine with polynomially bounded nimber of lpaces, transitions, arcs and initial tokens with respect to |V|,|E| and K if the original problem is specified with a graph G=(V,E) and a constant K.

The Effect of Platelet Rich Plasma Combined with Microfracture for the Treatment of Chondral Defect in a Rabbit Knee

허성우,김석중,김영주,최남용,전영준,박인주,Asode Ananthram Shetty 한국조직공학과 재생의학회 2014 조직공학과 재생의학 Vol.11 No.2

Recently, many clinical studies have been published regarding platelet-rich plasma (PRP) injection for early degenerative joint disease. We evaluated the cartilage repair potential of platelet-rich plasma when injected into the knee joint. Articular, cartilage defects 4mm in diameter and circular in shape were made in the trochlear region of 20 knees in 10 New Zealand white rabbits who were divided into two groups. The left knees in the control group underwent microfracture, and the right knees in the experimental group underwent microfracture with subsequent injection of platelet-rich plasma. At week 12 following the surgery, the cartilage was observed macroscopically and histologically compared in the two groups. The control group showed incomplete and irregular fibrous tissue formation in the defect. The experimental group showed nearly complete defect coverage with neo-cartilage. In the histologic scoring, comparison of the control group and the experimental group differed significantly (p<0.05).Therefore, injection of platelet-rich plasma used to treat articular cartilage defects of the knee appears to have some effect forcartilage regeneration.

Expanding the Feminist Politics of Reproduction in the Context of the Developmental Hegemony of South Korea

허성우 이화여자대학교 아시아여성학센터 2013 Asian Journal of Women's Studies(AJWS) Vol.19 No.3

This paper attempts to expand the political spaces of South Korean feminist politics of reproduction, which demands women’s biological reproductive rights from the state in the context of the developmental hegemony of Korean society. The case study of SMCs (Saemaul Mothers’ Clubs) shows that a long, deep, and continuous mobilization of women’s biological reproduction has been undertaken by the state within the frame of economic and socio-political development. In this process women have embodied developmentalism, creating strong consent for the associated state-led development policies. The feminist politics of reproduction calls for a shift from the politics of women’s biological reproductive rights with a strategy for engaging with the state in a struggle to deconstruct the developmental hegemony of reproduction that is simultaneously entrenched in people’s bodies, sexuality, mindsets, behavior patterns and in civil society groups, state institutions, and economic sectors at local, national, and global levels.

여성주의자는 '여성대통령'을 원하지 않는다

허성우 한국여성민우회 2012 함께가는 여성 Vol.212 No.-

주관 증후군: 최근 치료 동향

허성우,이주엽 대한수부외과학회 2012 대한수부외과학회지 Vol.17 No.2

Cubital tunnel syndrome is the second most common nerve entrapment syndrome affecting the upper extremity. Surgical treatment is indicated for those who have motor weakness or when conservative measures have failed. Several different surgical techniques have been introduced, however, the optimal treatment for cubital tunnel syndrome is still under debate. In the recent years, well-performed prospective randomized studies show that there is no difference in outcome among various surgical techniques regardless of the severity and presence of subluxation. It is advised that in situ decompression is the preferred technique because it is simpler and less time consuming procedure. Although in situ decompression is effective in uncomplicated ulnar nerve subluxation, anterior transposition should be considered when the subluxation is painful or when the ulnar nerve actually snaps back and forth over the medial epicondyle. Anterior transposition of the ulnar nerve is still indicated for revision surgery, previous trauma around the elbow, distal humerus fractures, severe osteoarthritis needing medial spur excision, and severe valgus deformity of the elbow. 주관 증후군은 상지에서 수근관 증후군 다음으로 흔하게 발생하는 압박성 신경병증으로 주관절 내상과 주위에서 척골 신경이 눌려 발생한다. 다양한 수술적 치료 방법이 소개되고 있으나 어떤 수술적 방법이 가장 이상적인가에 대해서는 아직까지 논란이 있다. 최근의 전향적 무작위 연구 결과를 종합해 볼 때, 척골 신경 비전위 감압술을 시행하는 것만으로도 임상적으로 만족할 만한 결과를 얻을 수 있으며, 전방 이전술을 시행한 경우와 비교하여 결과에 차이가 없음이 밝혀지고 있다. 단, 척골 신경의아탈구나 탈구가 통증을 유발할 경우에는 척골 신경 전방 이전술을 시행하여야 하며,재수술인 경우나 주관절 내측에 외상의 과거력이 있는 경우, 원위 상완골 골절이 동반된 경우, 주관절의 심한 관절염으로 관절 절제술이 필요한 경우, 주관절의 심한 외반 변형이 있는 경우에는 척골 신경 전방 이전술이 필요하다.