• Clinics in Shoulder and Elbow
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• 제17권3호
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• pp.134-137
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• 2014

To report the fracture of proximal humerus in the lateral anchor site after suture bridge repair. A 57-year-old female patient with shoulder pain on the right-side was admitted through the emergency room following a car accident. Seven weeks before the accident, the patient had undergone surgery at a different hospital for the repair of supraspinatus tendon rupture on the right-side via suture bridge technique. Humerus surgical neck fracture was confirmed by X-ray, and proximal humerus fracture at the anchor site was confirmed by magnetic resonance imaging. Following 7 months of conservative treatment resulted in satisfactory bone union and motion of the shoulder joint. We report the need of close observation during and after the arthroscopic repair of the rotator cuff in patients with osteoporosis.

• 한국자동차공학회논문집
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• 제10권5호
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• pp.199-205
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• 2002

The scale of repair parts market reached 0.1 billion won. Above all, it is remarkable that the automotive insurance business world is paying f3r 40 ~5o% of the whole repair cost. The repair parts consist of a genuine parts, non-genuine parts, recycling used parts. It is the recent trend that recycled parts are more popular than the genuine parts f3r repairing crashed cars due to the cost. Performance of recycled continuous velocity(CV) joints and power steering(PS) gear box as replacement parts was tested and analysed in this study. To examine the durability of the recycled parts, the replaced CV joints and PS gear box after repair were tested and analysed periodically. The results were showed that basic performance of the recycled parts was normal. However the ball cage of CV joints was more frequently damaged than genuine parts. We concluded that a test standard and amendment of related laws for recycled parts is required to get a safe and durable parts.

• 대한관절경학회지
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• 제2권2호
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• pp.181-184
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• 1998

저자들은 생체 분해성 Meniscus Arrow$^{(R)}$를 이용한 반월상 연골 봉합술후에 발생한 비세균성 활액막염을 최초로 경험하였다. 따라서 향후 Meniscus Arrow$^{(R)}$를 이용한 반월상 연골 봉합술 후에 활액막염이 발생할 수 있음을 고려하여야 하며, 이 경우에서 활액막 절제술로 좋은 결과를 얻을 수 있었기에 문헌과 함께 보고하는 바이다.

• 대한관절경학회지
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• 제11권1호
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• pp.54-58
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• 2007

반월상 연골 봉합술 시 여러 종류의 흡수성 또는 비흡수성 봉합사들이 사용되고 있으며, 술자에 따라 비흡수성 봉합사가 흡수성 봉합사에 비해 안정된 고정력을 제공한다고 하여 비흡수성 봉합사를 선호하기도 한다. 그러나 봉합사가 봉합부위에 지속적으로 남아있을 경우 이로 인한 문제가 발생할 수 있으며, 저자들은 Inside-Out 반월상 연골 봉합술에서 비흡수성 봉합사가 반월상 연골 실질부를 관통하여 후내측 관절막 밖으로 밀려나온 증례를 경험하였기에 이를 보고하고자 한다.

• 한국도로학회논문집
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• 제13권2호
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• pp.9-20
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• 2011

국내 대부분을 차지하고 있는 노출형 신축이음장치는 주행 시 소음과 충격을 발생시켜 주행성을 떨어뜨리며, 많은 유지관리비가 소요되고 있다. 이에 미국과 유럽 등에서 적용되었던 매설형 신축이음장치인 Asphalt Plug Joint(APJ) 시스템을 기본으로 하부 구조를 개량한, 새로운 매설형 신축이음장치 Buried Folding Lattice Joint(BFLJ) 시스템이 제안되었다. 본 연구에서는 실험을 통해 매설형 신축이음장치의 상부포장 혼합물에 따른 내구성 및 신축 특성을 비교하였으며, 포장가속시험을 통해 실제 차량 하중에 대한 BFLJ 시스템의 내구성을 평가하였다. 실험결과 개발된 BFLJ 시스템은 기존 APJ 시스템에 비해 신축성능이 우수하며 접합부에서의 응력 집중을 완화시켰다. 또한 차량 하중에 의한 BFLJ 시스템의 표면 처짐이 크게 발생하지 않았으며, 신축이음장치 내의 하부 구조의 손상이 없었던 점에서 기존 APJ 시스템의 문제점을 극복하고 조기파손을 예방할 수 있을 것이라 판단되었다.

• Clinics in Shoulder and Elbow
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• 제13권2호
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• pp.194-201
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• 2010

목적: 오구 쇄골 인대를 봉합하지 않고 견봉 쇄골 관절의 관혈적 정복만 시행한 환자군에서의 임상적, 방사선학적 추시 결과를 확인하고자 하였다. 대상 및 방법: 1998년부터 2007년까지 변형 Phemister 술식과 갈고리 금속판 (AO hook 금속판, Wolter 금속판)을 사용하여 견봉 쇄골 관절 탈구로 수술 받은 환자 중 삽입물 제거한 53예를 대상으로 하였다. 변형 Phemister 술식을 사용한 군이 21명, 갈고리 금속판을 사용한 군이 32명 이였다. 임상적 평가는 Constant score를 이용하였으며, 양측 쇄골과 오구돌기 사이의 수직 거리를 비교하여 방사선적 평가를 하였다. 결과: Constant score는 변형 Phemister 술식을 사용한 군에서는 $87.59{\pm}7.8$, 갈고리 금속판을 사용한 군에서는 $89.35{\pm}5.3$로 통계학적 차이는 없었다. 두 군에서 수술 전 손상 부위의 쇄골 오구돌기의 평균 거리는 15.9 mm이였으며, 건측 견관절은 평균 8.0 mm이였다. 갈고리 금속판 환자군에서 건측과 비교하여 평균 1.0 mm, 변형 Phemister 환자군에서는 평균 1.2 mm의 수직 전위가 관찰되었으며 통계학적 차이는 없었다. 결론: 오구쇄골 인대를 복원 하지 않은 견봉 쇄골 관절 탈구의 관혈적 정복술 및 내고정술은 양호한 임상적, 방사선학적 결과를 보였다.

• 대한족부족관절학회지
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• 제22권2호
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• pp.55-61
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• 2018

Chronic lateral ankle instability is a major complication of acute ankle sprains, which can cause discomfort in both daily and sports activity. In addition, it may result in degenerative changes to the ankle joint in the long term. An accurate diagnostic approach and successful treatment plan can be established based on a comprehensive understanding of the concept of functional and mechanical instability. The patients' history and correct physical examination would be the first and most important step. The hindfoot alignment, competence of the lateral ligaments, and proprioceptive function should be evaluated. Additional information can be gathered using standard and stress radiographs. In addition, concomitant pathologic conditions can be investigated by magnetic resonance imaging. Conservative rehabilitation composed of the range of motion, muscle strengthening, and proprioceptive exercise is the main treatment for functional instability and mechanical instability. Regarding the mechanical instability, surgical treatment can be considered for irresponsible patients after a sufficient period of rehabilitation. Anatomic repair (modified $Brostr{\ddot{o}}m$ operation) is regarded as the gold standard procedure. In cases with poor prognostic factors, an anatomical reconstruction or additional procedures can be chosen. For combined intra-articular pathologies, arthroscopic procedures should be conducted, and arthroscopic lateral ligament repair has recently been introduced. Regarding the postoperative management, early functional rehabilitation with short term immobilization is recommended.

• Clinics in Shoulder and Elbow
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• 제18권1호
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• pp.47-51
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• 2015

Iatrogenic damage of the rotator cuff followed by postoperative shoulder function loss is a potential complication after antegrade intramedullary nailing (AIN) for a humeral fracture. The authors present a case of arthroscopic rotator cuff repair and subacromial decompression of a non-healed rotator cuff tendon (mainly supraspinatus) and secondary impingement syndrome caused either by the tear or a proud nail after AIN for a mid-shaft humeral fracture. At presentation, the patient complained of right shoulder pain and 'snapping', especially during forward elevation and abduction of the shoulder, of 4 years duration. Right shoulder pain started sometime after pain due to the humeral shaft fracture, operation had subsided, and persisted after nail removal. Arthroscopic findings showed a longitudinal rotator cuff tear at the nail entry point that had not healed and severe fibrous hypertrophy on the acromion underspace, which is a unique finding since most longitudinal splits of tendon fibers are more likely to heal than conventional rotator cuff tears detached from bone. The torn rotator cuff was repaired after debridement and placing side-to-side sutures. At his 34-month follow-up after rotator cuff repair, the patient showed complete recovery and had excellent clinical scores.

• Structural Engineering and Mechanics
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• 제57권2호
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• pp.295-313
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• 2016

In this study, the three-dimensional finite element method is used to determine the stress intensity factor in Mode I and Mixed mode of a centered crack in an aluminum specimen repaired by a composite patch using contour integral. Various mesh densities were used to achieve convergence of the results. The effect of adhesive joint thickness, patch thickness, patch-specimen interface and layer sequence on the SIF was highlighted. The results obtained show that the patch-specimen contact surface is the best indicator of the deceleration of crack propagation, and hence of SIF reduction. Thus, the reduction in rigidity of the patch especially at adhesive layer-patch interface, allows the lowering of shear and normal stresses in the adhesive joint. The choice of the orientation of the adhesive layer-patch contact is important in the evolution of the shear and peel stresses. The patch will be more beneficial and effective while using the cross-layer on the contact surface.

• Clinics in Shoulder and Elbow
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• 제26권3호
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• pp.302-305
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• 2023

The authors present a case of transient postoperative inferior subluxation of the shoulder after arthroscopic surgical stabilization for recurrent anterior dislocation. The patient was a 61-year-old woman with myasthenia gravis (MG). The first anterior shoulder dislocation occurred because of a fall to the ground. Despite a successful closed reduction, two more dislocations occurred in 3 weeks. Magnetic resonance imaging revealed an anterior labroligamentous periosteal sleeve avulsion (ALPSA) lesion, an engaging Hill-Sachs lesion, and large tears of the supraspinatus and infraspinatus tendons. The patient underwent arthroscopic rotator cuff repair and ALPSA repair with a remplissage procedure. Intraoperatively, no tendency for instability was found; however, a widened glenohumeral joint space and inferior subluxation of the humeral head without functional compromise was observed on the day after surgery and disappeared spontaneously on radiographs 2 weeks later. To the authors' knowledge, this is the first report documenting the occurrence of transient postoperative inferior subluxation of the shoulder in a patient with MG.