• The Journal of the Korean dental association
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• v.10 no.9
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• pp.605-625
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• 1972

한글의 파열자음(Plosive Consonants of stop consonants)인 ㄱ, R, ㅋ, ㅃ, ㅍ이나, ㄷ, ㄸ, ㅌ의 삼중 구별은 외국어에서는 찾아 볼수 없는 한글 고유의 특성이라고 생각되어 왔다. 이는 한국인 학자에게 뿐만 아니라 외국인 학자에게도 크나큰 관심사가 되어 왔다. 그 가장 큰 이유중의 하나가 소위 파열자음의 생리기전면에서 볼때, p,b나 k,g의 구별이 단순히 무성(Voiceless)대 유성(Voiced)의 차이냐 또는 근육의 힘의 차이냐 하는 문제가 오랫동안 국제학계에서 논난의 대상이 되어왔기 때문이다. 둘째로는 기이하게도 한글의 파열자음은 모두 무성자음으로 외국어에서 볼수있는 유성대 무성의 대조는 없으며, 다만 근육의 gal의 대조가 있지 않을까 생각되어 왔기 때문이다. 그러나 현재까지는 이 세가지 종류의 한글파열자음 발음시의 생리기전의 차이를 규명한 연구가 없었다. 저자는 이점에 착안하여 미국 위스컨신대학교 언어병리학 및 생리학 실험실에서 고도로 발달된 최신 연구기구를 이용하여 한글파열 자음 발음시의 생리기전의 차이를 규명하였다. 서론 연구방법, 연구결과, 결론에 관한 자세한 내용은 영문초록에 기술되어 있다.

• Journal of the Korean Arthroscopy Society
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• v.13 no.1
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• pp.77-81
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• 2009

In patients with full-thickness tears of the rotator cuff, the tendon is usually detached from its bony insertion in the greater or lesser tuberosity. We experienced an unusual pattern of rotator cuff tear in two cases, in which complete rotator cuff tears occurred at the tendinous portion (i.e., intrasubstance tears) with more than a 1cm remnant attached to the greater tuberosity. Arthroscopic tendon-totendon repair was performed without remnant removal in both cases. Follow-up MRI at 6 months showed re-tear of the rotator cuff at the previous tear site in both of our patients. To prove the availability of arthroscopic tendon-to-tendon repair in such cases, a larger case follw-up and biomechanical studies are required.

• The Academic Congress of Korean Shoulder and Elbow Society
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• 2009.03a
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• pp.89-89
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• 2009

• Journal of Chest Surgery
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• v.34 no.2
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• pp.125-132
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• 2001

배경 및 목적: Stand A형 급성대동맥박리증의 박리 시발점이 수술치환부위 내에 있는 경우와 그렇지 않은 경우의 임상적 차이점을 분석하여 치료에 도움을 주고자 하였다. 방법: 1991년 3월부터 1999년 7월까지 본원에서 급성상행대동맥박리증으로 진단되어 상행대동맥치환술을 받은 40명의 환자를 대상으로 병력기록을 근거로 수술 소견 상 찢어진 부위를 발견한 환자 27명을 1군, 발견 못한 나머지 13명을 2군으로 나누고 환자의 술 전 상태와 수술소견 및 술후 경과의 임상적 차이점을 분석하였다. 결과: 1군에서 술전에 저혈압, 대동맥판막부전, 심허혈, 신부전 등이 더 많이 발생되었다. 수술 소견 상 대동맥근부 이상은 1군에서 많았다. 가성 내강 내 혈종은 2군에서 더 많이 관찰되었지만 통계적으로 유의하지는 않았다. 술후에 2군에서는 신부전이 더 많이 발생하였고 술후 출혈로 인한 재수술은 1군에서 더 많았다. 조기 수술사망은 1군에 6명으로 사망률은 22.2%이었고 2군에는 사망 례는 없었다. 결론: 본 연구를 통하여 상행대동맥에서 내막 파열이 발견된 1군에서는 2군에 비해 술전 상태가 불량하였고 대동맥판막 병변으로 수술이 복잡해져 사망률이 높다고 생각된다. 반면 원위부 하행대동맥에서 박리가 진행되어 상행대동맥으로 이어진 2군에서는 1군에 비해 순환 장애로 인해 술후에 신부전이 더 많이 발생되었다. 결론적으로 상행대동맥내막에 파열점이 없었던 군에서 수술 예후는 상행대동맥내막에 파열점이 있는 군보다 더 좋았다.

• Clinics in Shoulder and Elbow
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• v.14 no.2
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• pp.222-228
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• 2011

Purpose: To compare the mid-term clinical results of arthroscopic and open repair for large to massive rotator cuff tear. Materials and Methods: We retrospectively reviewed 48 patients who underwent either arthroscopic or open repair for large to massive rotator cuff tear. 28 patients underwent arthroscopic repair and 20 patients had open repair. The clinical outcome for the 2 groups was evaluated using range of motion, Visual Analogue Scale (VAS) for pain and function, American Shoulder and Elbow Society (ASES) score and Korean Shoulder Scoring System (KSS) score. Results: The range of motion, VAS for pain and function and ASES score was improved significantly in both groups at the final follow-up visit compared with preoperative values. However, there were no significant differences between the two groups statistically (p>0.05). There were no significant differences between the two groups statistically at the final follow-up KSS score (p>0.05) either. Conclusion: We could obtain improved mid-term clinical outcomes in both arthroscopic repair and open repair without any statistically significant differences between the two groups.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.1 no.2
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• pp.78-85
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• 2008

Purpose: The findings of preoperative magnetic resonance imaging (MRI) and ultrasonography (US) examination in the diagnosis of rotator cuff tear were then compared with the findings of arthroscopic examination, and to evaluate the postoperative integrity of rotator cuff using serial US examination. Methods: Between February and May 2008, 29 patients with rotator cuff tear had undergone preoperative US and MRI examination and subsequent arthroscopic examination. And the results of MRI and US were compared with intra-operative results of the arthroscopic examination. We observed the postoperative integrity of rotator cuff using serial (postoperative 2 weeks, 6 weeks, 3 months) US examination. Results: The sensitivity of US and MRI for identifying rotator cuff tear were 100% and 100%. The sensitivity of US and MRI were 95% and 82% in full thickness tear, and 50%, 33% in partial thickness tear, respectively. Overall accuracy of US and MRI were 86%, 69%. Among 22 patients were operated for full thickness tear, intra-operative gap formation was identified in 11 patients (50%, small to medium 2 cases, large to massive 9 cases) which were identified at 2 weeks postoperative US. We could find 5 re-tears (23%, small to medium 1 case, large to massive 4 cases) on 6 weeks postoperative US after passive range of motion (ROM) exercise, and could also find 7 re-tears (32%, small to medium 2 cases, large to massive 5 cases)on 3 months postoperative US after active ROM exercise. Conclusion: Serial US after arthroscopic rotator cuff repair was useful to differentiate intra-operative gap formation from postoperative re-tear. We found 5 retears (23%) at 6 weeks and 7 retears (32%) at 3 months postoperative US, it was useful to make treatment plan during postoperative rehabilitation.

• Transactions of the Korean Society of Mechanical Engineers
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• v.16 no.6
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• pp.1056-1063
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• 1992

Burst pressure of right circular tube is predicted using analytic method, and asymptotic instability pressure of circular tube with roundness defect is found using FEM. Burst tests of nearly right circular tube specimens are carried out and predictions are compared with burst pressures and their accuracy is discussed. It is confirmed that FEM is useful for prediction of burst pressure.

• Journal of the Korean Arthroscopy Society
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• v.6 no.2
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• pp.131-135
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• 2002

Object : To evaluate the prognostic factors of the rotator cuff tear after anterior dislocation of the shoulder over the 5th decades of age. Methods : We evaluated twelve patients who had rotator cuff tears combined with primary anterior dislocation of the glenohumeral joint between May 1995 and October 1998. Their age were ranged from 42 to 67-years-old. Two of them were initially presumed to have an injury of the axillary nerve and associated with avulsion fracture of the greater tuberosity. Among twelve patients who had rotator cuff tears, 8 cases had massive, 3 cases had medium and one case had a small sized tear. Results : All the tears of the rotator cuff were repaired and the results were obtained by UCLA shoulder rating scale. Ten cases of them revealed more than good results except for 2 cases who had been unhappy triad of the shoulder injury. Conclusions : In the case of anterior dislocation of shoulder, it is necessary to check the injury of rotator cuff and axillary nerve in the middle age group. If these injuries are combined, proper rotator cuff repair and axillary nerve rehabilitation program would be asked for better results.

• Journal of Chest Surgery
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• v.42 no.1
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• pp.111-114
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• 2009

Aorto-iliac artery aneurysms are very rare and the natural course of this disease is not well known. However, the risk of rupture is high and the mortality rate after rupture is extremely high. Preserving the pelvic circulation is important for the treatment of aorto-iliac artery aneurysms. We report here on a case of a patient suffering with aorto-iliac artery aneurysms, and these were treated by a hybrid endovascular operation that combined an open bypass of both iliac vessels with endovascular repair.

• The Journal of Korean Academy of Prosthodontics
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• v.8 no.1
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• pp.130-132
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• 1968