• Title/Summary/Keyword: snapping

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Geometric Snapping for 3D Triangular Meshes and Its Applications (3차원 삼각형 메쉬에 대한 기하학적 스내핑과 그의 응용)

  • 유관희;하종성
    • Journal of KIISE:Computer Systems and Theory
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    • v.31 no.3_4
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    • pp.239-246
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    • 2004
  • Image snapping for an image moves the cursor location to nearby features in the image, such as edges. In this paper, we propose geometric snapping for 3D triangular meshes, which is extended from image snapping. Similar to image snapping, geometric snapping also moves the cursor location naturally to a location which represents main geometric features in the 3D triangular meshes. Movement of cursor is based on the approximate curvatures which appear geometric features on the 3D triangular meshes. The proposed geometric snapping can be applied to extract main geometric features on 3D triangular meshes. Moreover, it can be applied to extract the geometric features of a tooth which are necessary for generating the occlusal surfaces in dental prostheses.

Snapping Plicae of radiocapitellar joint -2 cases Report- (요골 상완골 관절의 발음성 추벽 - 증례보고 -)

  • Yoo, Yon-Sik;Jung, Eun-Ho
    • Clinics in Shoulder and Elbow
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    • v.6 no.1
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    • pp.85-89
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    • 2003
  • We experienced rare cases of Snapping plicae on radiohumeral joint which arthoscopic plicae resection improved symptom of painful snapping elbow. We report that Arthroscopy can be used as a effective therapeutic and diagnostic method for snapping plicae on radiohumeral joint with a review of its literature.

Snapping Scapula with Congenital Bilateral Elbow Fusion (선천성 양측성 주관절 유합에 동반된 발음성 견갑골 - 증례 보고 -)

  • Choi Chang-Hyuk;Koh Sang-Bong;Kim Tae-Hoon
    • Clinics in Shoulder and Elbow
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    • v.7 no.1
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    • pp.46-50
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    • 2004
  • The snapping scapula is a relatively uncommon phenomenon occuring as a consequence of some anomalous conditioin existing between the thoracic wall and the undersurface of the scapula. It may present in several ways like crepitus, pain during scapular movement and limitation of scapular motion. The causes of snapping scapula are changes in the intervening soft tissues, the muscles, or the bursae between the scapula and the chest wall; and changes in the congruence between the anterior scapular surface and the underlying chest wall. The congenital elbow fusion or humeroradioulnar synostosis is an extremely rare inheritable disorder that previously described just a few reports. Recently we experienced a case of snapping scapular with congenital bilateral elbow fusion treated by arthroscopic scapulothoracic bursectomy and consequent open superomedial scapulectomy. We would describe the clinical feature of a snapping scapula and result of treatment with literature review.

Elastofibroma Dorsi as a Cause of Snapping Scapula - A Case Report - (탄발음 견갑골의 한 요인으로서 탄성섬유종 - 1예 보고 -)

  • Hwang In-Hwan;Kim Jong-Woo;Oh Sung-Kyun;Park Hyung-Bin
    • Clinics in Shoulder and Elbow
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    • v.8 no.2
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    • pp.154-157
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    • 2005
  • Elastofibroma dorsi is a benign soft tissue mass, not well-known because of its low incidence, and usually located between the chest wall and the inferomedial aspect of the scapula. This lesion is not true neoplasm but rather reactive hyperplasia of elastic fibers. It is mostly nontender mass, but occasionally causes snapping symptom. This tumor should be considered as a differential diagnosis of snapping scapula. The clinical diagnosis is made by magnetic resonance imaging and confirmed by pathologic findings. We present a case report of a female with elastofibroma dorsi, who had that the chief complaint was snapping scapula and palpable mass. We emphasize that snapping lesions located deep beneath the inferior tip of the scapula on the chest wall should arouse suspicion of an elastofibroma dorsi.

Bilateral Painful Snapping Scapula - A Case Report - (동통을 동반한 양측성 발음성 견갑골 - 1예 보고 -)

  • Shin Sung-Ryong;Ko Young-Seok;Park Yong-Wook;Lee Sang-Soo;Jeong Un-Seob;Kim Do-Young
    • Clinics in Shoulder and Elbow
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    • v.8 no.2
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    • pp.170-175
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    • 2005
  • Painful and disabling snapping scapula is an unusual condition and there have been several reports that have revealed good results after surgical treatment for unilateral snapping scapula. We experienced a case of bilateral painful snapping scapula in a young man, but with successful treatment by partial resection of the superomedial angle of both scapula. Preoperative 3-dimensional CT revealed bony prominence of the superomedial angle of both scapula and narrowing between superior scapular angle and chest wall.

A study of the Snapping investigations of Seoul Southwest Baseball Dome (서울 서남권 돔 야구장의 Snapping 검토에 관한 연구)

  • Kim, Seung-Deog;Kim, Nam-Seok
    • Journal of Korean Association for Spatial Structures
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    • v.10 no.4
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    • pp.133-140
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    • 2010
  • This paper studies on the instability behaviour of the Seoul southwest baseball dome. The nonlinear Snapping phenomenon of the structure is investigated about the load mode by the design load of analysis structure and these combined loads. The initial imperfection obtains the buckling mode through the eigenvalue analysis of the tangential stiffness matrix and uses this for the nonlinear analysis. However, the buckling of members or the local buckling, and etc don't consider in the research range of this research task. Also it is limited the overall buckling phenomenon.

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Snapping Knee Caused by a Superiorly Displaced Medial Meniscus: Knee Dynamic Ultrasonographic Findings (위쪽으로 전위된 안쪽 반달연골에 의해서 발생하는 퉁김현상: 무릎 실시간 초음파 영상 소견)

  • Hyun Seok Oh;Tae Eun Kim
    • Journal of the Korean Society of Radiology
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    • v.82 no.2
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    • pp.455-461
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    • 2021
  • The causes of snapping knee include meniscal instability, but dynamic ultrasonographic findings have rarely been reported. Here, we report a case of snapping knee due to direct trauma to the right knee of a 79-year-old woman. Dynamic ultrasonography is used to confirm the snapping phenomenon caused by the anterosuperior displacement of the truncated posterior horn and body of the right medial meniscus.

Treatment of Snapping Hip Caused by a Tight lliotibial Tract (장경대 구축에 의한 탄발성 고관절의 치료)

  • Kyung Hee-Soo;Kim Shin-Yoon;Jung Ho-Sung;Kim Yong-Goo
    • Journal of Korean Orthopaedic Sports Medicine
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    • v.2 no.2
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    • pp.158-162
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    • 2003
  • Purpose: The purpose of this study was to analyze the treatment results of snapping hip caused by a tight iliotibial tract using Z-plasty . Materials 8nd Methods: Five patients (seven hips) were treated by Z-plasty using Brignall and Stainsby's method from March, 1995 to May,2002 There were three males and two females and their average age at operation was 24.4 years. All patients complained of snapping, pain, and difficulty of squatting with attaching both knees . The average of follow-up was one year and four months. The local anesthesia was done in three patients (3 hips) and epidural anesthesia in two patients (4 hips). Results: Snapping was absent, squatting with attaching both knees was possible, and pain relief was excellent in all patients. One patient (one hip) experienced occasional aching associated with exercise but it is not serious. Conclusion: This Z-plasty of iliotibial band was an excellent surgical technique for the symptomatic snapping hip.

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A Case Report on Snapping Hip Patient Treated by Chuna Manual Therapy for Meridian Sinew System (경근추나 치료 후 호전된 발음성 고관절 환자 치험례)

  • Kim, Wu-Young;Lee, Jae-Young;Han, Sang-Yup;Kong, Deok-Hyun;Park, Jai-Young;Lee, Hyun-Jong
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.5 no.2
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    • pp.43-48
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    • 2010
  • Objectives : This study is designed to evaluate the effect of conservative oriental medical treatment using Chuna manual therapy for meridian sinew system for snapping hip patient who have hip joint movement system impairment. Methods : 28-year old snapping hip patient who have hip joint movement system impairment was treated with conservative oriental medical treatment using Chuna manual therapy for meridian sinew system. The improvement of the patient was evaluated by Numerical rating scale(NRS), Snapping Sound Degree(SSD), Range of Motion(ROM). Results: After 13 times treatment, the patient had significant improvement in Numerical rating scale(NRS), Snapping Sound Degree(SSD), Range of Motion(ROM). Conclusions: If hip joint movement system impairment cause a snapping hip, we can treat with Chuna manual therapy for meridian sinew system.

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Postbuckling and Vibration Analysis of Cylindrical Composite Panel subject to Thermal Loads (열하중을 받는 복합적층 원통형 패널의 좌굴후 거동 및 진동해석)

  • Oh, Il-Kwon;Lee, In
    • Journal of the Korea Institute of Military Science and Technology
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    • v.2 no.2
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    • pp.148-156
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    • 1999
  • The thermal postbuckling and vibration characteristics of cylindrical composite panel subject to thermal loads are analyzed using finite elements. The von-Karman nonlinear displacement-strain relation based on the layerwise theory is applied to consider large deflections due to thermal loads. Cylindrical arc-length method is used to take into account the snapping phenomena. Thermal snapping and vibration characteristics are investigated for various structural parameters such as thickness ratio, shallowness angle and boundary conditions. The present results show that thermal snapping changes the mode shapes as well as static deformations.

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