• Journal of Chest Surgery
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• v.39 no.7 s.264
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• pp.549-552
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• 2006

In the mitral regurgitation (MR) accompanied with a serious ischemic cardiomyopathy (ICMP), coronary revascularization to viable myocardium, LV reduction and mitral reconstruction become the main surgery under the bad conditions that the cardiac transplantation is not so easy. The MR in ischemic cardiomyopathy appears as various pathologic factors, among them, the papillary muscle displacement in addition to the annular dilatation is pointed out as the important cause. Our hospital would like to report the experience of the surgery about coronary revascularization to the left main with 3-vessel coronary disease, severe ICMP patients accompanied with the MR, posterior mitral annuloplasty and papillary muscle plication through the LVtomy.

• Journal of the Korean Arthroscopy Society
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• v.13 no.1
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• pp.63-67
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• 2009

We report the case of a 21-year-old man with acute septic arthritis of the knee after meniscal allograft transplantation, which was successfully treated with repeated arthroscopic debridement and irrigations. Our procedures included arthroscopic debridement and irrigation with 10L normal saline, repeated arthroscopic irrigations (5 times), and intravenous antibiotics. Our decision to repeat the debridement was based on clinical and laboratory results. The significance of this case is that early aggressive arthroscopic debridement and repeated irrigations as part of a treatment protocol of acute septic arthritis after meniscal allograft transplantation can be an effective treatment option in selected cases.

• Clinics in Shoulder and Elbow
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• v.14 no.1
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• pp.111-116
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• 2011

Purpose: The purposes of this article are to review the mid-term results and the complications after reverse total shoulder arthroplasty and to analyze the influence of the etiology on the result. Materials and Methods: We conducted a systemic review of the published literature with the mid-term follow-up after reverse total shoulder arthroplasty was performed. The overall rates of problems, complications, reoperations and revisions were determined. Results: The reported complication rates varied from 0% to 68%. The first series of reverse prosthesis with at least 2 yrs of follow-up confirmed the preliminary results, with excellent functional outcomes. However, a systemic review of the published literature with a mid-term follow-up showed problems in 44% of the cases, complications in 24% of the cases, reoperations in 3.5% of the cases and revision in 10% of the cases. Conclusion: Reverse total shoulder arthroplasty has relatively high complication and revision rates. So, a reverse prosthesis should be used in patients with very disabling arthropathy and a massive cuff tear and who are over seventy (at least sixty-five) years old.

• Journal of the korean academy of Pediatric Dentistry
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• v.29 no.1
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• pp.125-131
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• 2002

When a tooth is fracture with the pulp exposure, and if a fragment is large enough to save, reattachment of the fragment would be a choice of treatment and reattachment of the fragment provides several advantages over other forms of dental restoration following crown fracture. For the purpose of tooth reattachment, it is important to preserve the sound enamel around fracture area. For young patients, tooth reattachment has more advantages in the sense that they recover faster and that it enables other treatments at the same time. Through the continuous advancement in adhesion technology and the effort for aestheticism, various reattachment methods have been practiced and more efforts are considered necessary. The presented cases are that we had practiced in our department in Kyung Hee Medical center, I may address that fragmentation has been successfully done with aesthetically fine results, and no pathologic changes were found in short term follow-ups.

• Journal of Convergence for Information Technology
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• v.9 no.11
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• pp.227-233
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• 2019

The purpose of this study is to evaluate the quality of chest compression by conducting comparison research between mechanical chest compressor(LUCAS) and manuale cardiopulmonary resuscitation(CPR) in a out-of-hospital environment and suggest effective advanced cardiac life support using mechanical chest compressors. For this, a out-of-hospital cardiac arrest was simulated with a team of 3 ambulance workers, and manuale CPR and CPR using LUCAS were performed on site and during transport in an ambulance. The research results are as follows: the comparison of manuale CPR between on site and in an ambulance revealed that on-site manuale CPR showed significant differences in the average compression depth, compression rate, and relaxation rate. Second, the comparison between manuale CPR and LUCAS in an ambulance showed significant differences in the average compression depth, compression rate, the number of compression per minute.

• Journal of the Korean Orthopaedic Association
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• v.54 no.2
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• pp.100-109
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• 2019

The rapidly increasing rate of shoulder arthroplasty is certain to increase the number of revision arthroplasties because of parallel increases in complication numbers. It has been widely reported that the causes of revision shoulder arthroplasty include rotator cuff deficiency, instability, glenoid or humeral component loosening, implant failure, periprosthetic fracture, and infection. Revision arthroplasty can be technically challenging, and surgical options available for failed shoulder arthroplasty are limited, especially in patients with glenoid bone loss or an irreparable rotator cuff tear. Furthermore, the outcomes of revision arthroplasty are consistently inferior to those of primary arthroplasty. Accordingly, surgical decision making requires a good understanding of the etiology of failure. Here, we provide a review of indications of revision arthroplasty and of the surgical techniques used by failure etiology.

• The Journal of the Korean bone and joint tumor society
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• v.9 no.1
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• pp.115-123
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• 2003

Study Design: A retrospective clinical and radiographic review. Objectives: The purpose of this study was to suggest recycling bone autotransplantation with extracorporeal heat-treatment as one of favorable reconstruction method for malignant bone tumors of pelvis through 3 cases. Summary of Literature Review: There are many biologic and nonbiologic reconstruction method in pelvic reconstruction. Cases: Case 1- A 20-year-old women had chief complaint of right hip and thigh pain started 3 months ago and done curettage and bone cementing at right ilium at other hospital. She had impression of malignant bone tumor and undergone postoperative radiation therapy for 6 cycles. After that she was referred to our hospital and undergone wide excision of right ilium and recycling bone autotransplantation with extracorporeal heat-treatment at 132 degree celsius for 2 minutes internal fixation with pelvic reconstruction plate and total hip replacement arthroplasty (ABG$^{(R)}$). There was no evidence of distant metastasis and revealed well-differentiated osteosarcoma on postoperative pathology. Neither adjuvant nor neoadjuvant chemotherapy were done. Case 2- A 56-year-old women who suffered right thigh pain for 3 months was detected radiologic abnormality at right pelvis. After incisional biopsy, osteosarcoma was diagnosed. We had undergone wide excision of right ilium and recycling bone autotransplantation with extracorporeal low heat-treatment at 65 degree celsius for 30minutes internal fixation with pelvic reconstruction plate and total hip replacement arthroplasty (ABG$^{(R)}$). There was no evidence of distant metastasis and revealed high-grade osteosacoma which was fibroblastic type on postoperative pathology. Adjuvant chemotherapy (HDMTX, ADR, CDDP) was done immediate after wound healing was completed. Case 3- A 46-year-old women was incidently found mass at left ilium which was suspected chondrosarcoma. We had undergone wide excision of left ilium and recycling bone autotransplantation with extracorporeal low heat-treatment at 65 degree celsius for 30minutes internal fixation with pelvic reconstruction plate and total hip replacement arthroplasty (Protek$^{(R)}$). There was no evidence of distant metastasis and revealed chondrosarcoma which was graded II/III on postoperative pathology. Results: Oncologic and functional outcome at final follow-up were for case 1, final follow-up time was 7 years, is no evidence of disease and functional score is 53% according to Ennecking et al. During follow-up, evidence of radiologic union was at about 1 and 6 months after operation. The case had breakage of pelvic reconstruction plate and some resorption of autotransplated bone, but no symptom present. For case 2, final follow-up was 3 years and 6 months, is no evidence of disease and functional score is 60%. For case 3, final follow-up was 7 months, no evidence of disease and functional score is 63% which is improving state. Discussion: 3 cases which were undergone recycling bone autotransplantation with extracorporeal heat-treatment and total hip replacement arthroplasty had relatively successful oncologic and functional outcome. Taking account that difficulty in using allograft in Korea this method is thoght to be one of the useful way to reconstruct pelvis after resection of primary malignant bone tumor of the pelvis.

• Journal of Chest Surgery
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• v.37 no.4
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• pp.322-327
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• 2004

Coronary artery bypass grafting on the beating heart is no longer a new methods for any cardiac surgeon. We evaluated the application of the off-pump coronary artery bypass procedure relative to safety and efficiency as measured by postoperative complication and operative mortality. Material and Method: We used our retrospective database to compare the patients having off-pump coronary surgery (n=100) with those having on-pump coronary surgery (n=100) between June, 1999 and August, 2002. Patients whom underwent associated valvular or aortic aneurysmal operation were excluded. Result: Neither groups showed any differences in the patient's risk factors and extent of coronary disease. Off-pump CABG group did not have significantly less mean operation time (295$\pm$73 min vs 323$\pm$83 min, p=ns) and mean hospital day (15.34$\pm$6.02 day vs 13.80$\pm$4.95 day, p=ns). However, off-pump CABG group had significantly shorter mean ventilation time (17.3$\pm$11.27 hour vs 24.98$\pm$16.1 hour, p＜0.05). No patients were converted to on-pump CABG in off-pump CABG. Intraoperative hemodynamic instability in off-pump CABG were 6 cases, of whom 2 cases were in lateral wall approach and 4 cases in right coronary anastomosis. Postoperative mortality was 1 case in off-pump CABG and 2 cases in on-pump CABG. Intra-aortic ballon pump (IABP) was applied in 1 case with off-pump CABG and in 2 cases with on-pump CABG. No patients presented postoperative cerebral infarction ＆ stroke in off-pump CABG but 2 patients in on-pump CABG. Postoperative arrhythmia presented in 4 cases with off-pump CABG and in 6 cases with on-pump CABG. Acute renal failure (ARF) was complicated in 3 cases with off-pump CABG and in 2 cases with on-pump CABG. Conclusion: This study documented the immediate safety and efficiency of the off-pump CABG procedure.

• Journal of Chest Surgery
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• v.37 no.2
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• pp.166-172
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• 2004

When compare with blebectomy or bullaectomy simply and pleurodesis together in treatment of primary spontaneous pnevmthorax, the later has been realized as the method that can reduce the recurrent rate after surgical operation. Therefore, in this study, we compared the merits and demerits of the clinical result of chemical pleurodesis that use Talcum powder in pleurodesis and mechanical pleurodesis that use apical pleurectomy and analyzed the reappearance rate etc. Material and Method: The Pleurodesis through the apical pleurectomy and talc powder insufflation had been used as secondary procedure after blebectomy of spontaneous pneumothorax from January 1, 2000 to June 30, 2002. This study consisted of a retrospective review of 68 patients who were treated with apical pleurectomy, and 84 patients treated with talc powder insufflation. We compaired the apical pleurectomy and talc powder insufflation in terms of age, sex, cause of operation, number of used autosuture staple, tine duration of procedure after blebectomy, severity of pain and complication after operation, postoperative air leakage period, duration of chest tube insertion, hospitalization, and recurrence rate of pneumothorax. Result: Time required for secondary procedure was longer in apical pleurectomy than talc powder insufflation. Postoperative pain was more severe in talc powder insufflation than apical pleurectomy. Otherwise there was no significant difference between two methods. Conclusion: Although Talc powder insufflation is more convenient than apical pleurectomy, the difference is not large and, the severity of postoperative pain is worse in talc powder insufflation. Therefore apical pleurectomy can be recommended for the secondary surgical procedure after blebectomy of primary spontaneous pneumothorax can be recommended.

• Clinics in Shoulder and Elbow
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• v.13 no.2
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• pp.250-259
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• 2010

Purpose: The purpose of this study was to evaluate the usefulness and clinical results of arthroscopic double row repair with UU stitches for massive, full-thickness, rotator cuff tears. Materials and Methods: Between January 2007 and July 2009, we consulted on 36 massive tears in which it was possible to repair the middle area of the greater tuberosity by arthroscopy. One group consisted of 11 cases that had a double row repair with UU stitches. A second group consisted of 20 cases that had a single row repair with simple stitches. We compared the 2 groups for pain, Activities of Daily Living, UCLA score, and KSS score. We did this pre operatively, and at 6 months, 1 year and final follow-ups. Statistical analysis included Student's t test and a paired t est. Mean age was 59 (48~70); mean follow-up was 28 (12~43) months Results: VAS scores decreased from 7.5 pre operatively to 1.5 post operatively at the last f/u in the $1^{st}$ group (p<0.05). In the $2^{nd}$ group, the score decreased from 7.6 in pre op to 1.8 post operatively at the last f/u (p<0.05). There was no significant difference between the two groups (p>0.05). Mean ADL increased from 11.5 to 25.1 at the last f/u in the $1^{st}$ group (p<0.05); in the $2^{nd}$ group the ADL score increased from 11.3 to 27.5 (p<0.05). There was no significant difference between the two groups (p>0.05). The UCLA score increased from 13.9 to 31.6 in the $1^{st}$ group (p<0.05), while in the $2^{nd}$ group the score increased from 13.8 to 30.1 (p<0.05); there was no significant difference between the two groups (p>0.05). Comparing MRIs at 3 and 6 months post op, there were retears in 3 of 9 cases in the first group, and in 8 of 15 cases in the second group; there was no significant difference between the two groups (p>0.05). Conclusion: Arthroscopic double row repair with UU stitches for massive, full-thickness rotator cuff tears showed no differences in clinical results. However, it was associated with a significant difference in the incidence of retears.