• Journal of the Korean Society for Precision Engineering
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• v.28 no.9
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• pp.1048-1053
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• 2011

Recently, robots have been used in surgical area. Robotic surgery in Minimally Invasive Surgery gives many advantages to surgeons and patients both. This study introduce a robotic assistant to improve the safety of telerobotic Minimally Invasive Surgical procedures. The master-slave system is applied to the telerobotic surgical system with the master arm, which control the system, and slave robot which operates the surgery on the patient body. By using a 3-DOF master arm, the surgeon can control the 6-DOF surgical robot under the constraint of fulcrum point. This paper explains the telerobotic surgical system and confirms the system with the precision of the robot control related to the fulcrum point to enhance the safety.

• Journal of Trauma and Injury
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• v.30 no.3
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• pp.87-90
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• 2017

Purpose: Nowadays, Video-Assisted Thoracic Surgery (VATS) is widely used for its benefits, low post-operative pain, excellent anesthetic result and complete visualization of intrathoracic organs. Despite of these advantages, VATS has not yet been widely used in trauma patients. In this study, we aimed to investigate the usefulness of VATS in the chest trauma area. Methods: From January 2016 to December 2016, 203 patients underwent surgical treatment for chest trauma. Their medical records were analyzed retrospectively. Results: Eleven patients underwent thoracic surgery by VATS. Six patients were unstable vital sign in the emergency room. Two patients underwent emergency surgery and the rest patients underwent planned surgery. The common surgeries were VATS hematoma evacuation and wedge resection. There was no conversion to thoracotomy. The surgery proceeded without any problems for all patients. Conclusions: VATS would be an effective diagnostic and therapeutic modality in chest trauma patients. It can be applied to retained hemothorax, persistent pneumothorax, suspicious diaphragm injury and even coagulation of bleeder.

• Korean Journal of Veterinary Service
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• v.24 no.1
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• pp.101-107
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• 2001

Squamous cell carcinoma of the skin was diagnosed in an 11-year-old, Australian shepherd dog with a hard mass on the right rump area. On histopathological examination of the tumor showed laminated keratin "pearls" surrounded by proliferated squamous cells, and mitotic figures. The dog was treated by surgical excision and chemotherapy with vinblastine sulfate, cyclophosphamide and prednisolone for 4 weeks. The tumor was effectively treated with a combination of surgery and chemotherapy.motherapy.

• Archives of Craniofacial Surgery
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• v.21 no.3
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• pp.143-155
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• 2020

Surgical anatomy for Asian rhinoplasty Part I reviewed layered anatomy with neurovascular system of the nose. Part II discusses upper two-thirds of nose which consists of nasal bony and cartilaginous structures. Nasal physiology is mentioned briefly since there are several key structures that are important in nasal function. Following Part III will cover lower one-third of nose including in-depth anatomic structures which are important for advanced Asian rhinoplasty.

• Korean Journal of Otorhinolaryngology-Head and Neck Surgery
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• v.55 no.9
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• pp.546-551
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• 2012

The endonasal approach for rhinoplasty is an important surgical technique to manage the majority of the nasal problem that present to the nasal plastic surgeons. Open rhinoplasty offers an excellent visualization and therefore facility of precise correction, but causes a larger area of wound and scarring. This review was designed to describe the versatility of endonasal techniques for rhinoplasty.

• Journal of Chest Surgery
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• v.27 no.3
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• pp.230-233
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• 1994

A 21-year-old man with atrioventricular[AV] reentry tachycardia secondary to concealed accessory AV connection underwent surgical division of two accessory pathways following failure of radiofrequency catheter ablation. pathways were located in the left free wall area.Before cardiopulmonary bypass, the epicardial mapping confirmed the existence and localization of two accessory pathways. The patient was approached through a left atriotomy with a dissection of the left free wall area beginning with an internal mapping was carried out after separation from cardiopulmonary bypass to confirm the absence of retrograde conduction of accessory pathway. Five weeks after surgery, the electrophysiololgic study demonstrated no retrograde conduction through two accessory pathways.

• Korean Journal of Bronchoesophagology
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• v.6 no.2
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• pp.143-146
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• 2000

Cystic lesion which is located in vallecular area is sometimes symptomatic and need surgey. But surgical route to this area is divided external approach into internal one. Internal approach via transoral route with suspension laryngoscope can avoid disadvantages of external approach but conventional laryngoscope is not suitable for this type of procedure. We used Steiner laryngopha-ryngoscope in surgery for vallecular cyst and we could excise cyst easily. Of 20 cases, complete excision was tried in 18 cases and marsupialization in 2 cases. Recurrence was 1 case. We suggest that surgery using laryngopharyngoscope is effective in treating cyst which is located in vallecular area.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.28 no.1
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• pp.35-41
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• 2006

It is well known that concentration of C-reactive protein(CRP) in the serum increase as nonspecific reaction of the various tissue injury. The CRP, synthesized in the hepatocyte, is one of 'acute phase proteins' in the serum. The main signal patterns of this protein are regulated by synthesis of interleukin-I secreted from macrophage in the area of tissue injury. Many studies were performed for quantitative analysis for CRP according to various surgical operation, but the study for fracture patients associated with trauma, especially in mandible, are rare. The mandible fracture have intrinsic danger for infection in oral bacteria associated with open wound in oral cavity, and, are difficult for detection of tissue reaction between surgical swelling and infection by facial swelling. In this study, quantitative analysis for CRP associated tissue injury in mandibular fracture and surgical intervention was done, the results were as follows: 1. After initial mandibular trauma, the value of serum CRP diminished sequentially, most high value was presented in post-traumatic 2 days. 2. The CRP was diminished significantly 2 days after surgical intervention, and maintained normal value in 5 days after surgery. 3. The change of CRP are higher value in surgical intervention than initial trauma, it suggested that tissue injury from surgery was severe than trauma. 4. The high value of CRP was obtained in mandibular fracture combined soft tissue injury than no associated soft tissue injury. 5. In measurement of CRP according to surgical approach, highest serum value in patients of combined intra-oral and extra-oral approach was showed, and intra-oral approach, extra-oral approach, in sequential orders. 6. The CRP value are more higher in patient of 2 fracture site than only one fracture site. From the results obtained in this study, CRP has showed different values in mandibular fracture associated with severity of tissue injury and surgical intervention, and quantitative analysis of CRP value in serum can be applied to the clinical management of mandibular fracture.

• The Journal of the Korean dental association
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• v.47 no.9
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• pp.585-595
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• 2009

Purpose : The aim of this study was to compare surgical complications between simple implant placement and implant placement combined with complicated surgical procedures. We also evaluated prosthetic complications according to the specific types of prosthesis. Material and Method : A retrospective analysis of dental chart of patients who was performed implant therapy during the period from June 2003 to December 2005 was carried out. This study was performed on 408 patients (208 male, 200 female). In addition, 1671 implants were performed. Based on their medical record and radiographs, the authors evaluated surgical and prosthetic complications, surgical procedures accompanied at the time of implant, risk factors of implant failure etc. Result : Surgical complications were developed on 358 implants(21.4% on total placed implants) and wound dehiscence was most prevalent complication. On maxillary posterior area, surgical complications developed more frequently on implants with major surgery and showed a significant difference. And complication rate of implants accompanied with GBR was higher than that of simple implants placement and also showed significant difference. The implant supported prosthesis showed no statistical difference in the occurrence of complications according to the types of prosthesis, and food retention was the most common post-prosthetic complication. Also we speculated that length and width of implant showed significant correlation to the failure of implant primary osseointegration. Conclusion : Based on the result, clinician should provide more careful maintenance for patients with implant placement accompanied by complicated surgical procedure. And periodic maintenance for the patient is requested for long-term survival of implant therapy.

• Annals of Hepato-Biliary-Pancreatic Surgery
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• v.27 no.1
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• pp.40-48
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• 2023

Backgrounds/Aims: Timing of resection for synchronous colorectal liver metastasis (CRLM) has been debated for decades. The aim of the present study was to assess the feasibility of simultaneous resection of CRLM in terms of major complications and develop a prediction model for safe resections. Methods: A retrospective single-center study of synchronous, resectable CRLM, operated between 2013 and 2021 was conducted. Upper limit of 95% confidence interval (CI) of major complications (≥ grade IIIA) was set at 40% as the safety threshold. Logistic regression was used to determine predictors of morbidity. Prediction model was internally validated by bootstrap estimates, Harrell's C-index, and correlation of predicted and observed estimates. Results: Ninety-two patients were operated. Of them, 41.3% had rectal cancers. Major hepatectomy (≥ 4 segments) was performed for 25 patients (27.2%). Major complications occurred in 20 patients (21.7%, 95% CI: 13.8%-31.5%). Predictors of complications were the presence of comorbidities and major hepatectomy (area under the ROC curve: 0.692). Unacceptable level of morbidity (≥ 40%) was encountered in patients with comorbidities who underwent major hepatectomy. Conclusions: Simultaneous bowel and CRLM resection appear to be safe. However, caution should be exercised when combining major liver resections with bowel resection in patients with comorbid conditions.