• Maxillofacial Plastic and Reconstructive Surgery
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• v.21 no.1
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• pp.48-53
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• 1999

Purpose: The aim of this study was to investigate the improvement of referred symptoms of TMJ internal derangement after open surgery of TMJ. Materials and Methods: The present study focused referred symptoms such as headache, neck pain, shoulder pain and evaluated the incidences and changes in their improvement at 1, 3, 6, 12 months after surgery in 118 patients who had TMJ internal derangement and received meniscoplasty(or meniscorrhaphy) and eminectomy at TMJ clinic of Yonsei University, Yongdong Severance Hospital, between 1992 and 1997. Results: One hundred eighteen patients(102 females, 16 males) with mean age of 29.6 years(range, 14 to 74) were included in this study and the mean follow-up period was 19.5 months(range, 12 to 60). The incidences of headache, neck pain, shoulder pain among the surgically treated TMJ internal derangement patients were 66.9%, 28.8%, 28.0% before surgery. Thirty-two preoperative severe(+++) headache patients were all improved their headache at 1, 3, 6 months after surgery, but slight relapse(9.4%) was found at 12 months after surgery. The clearance rate of preoperative neck and shoulder pain were 91.2% and 90.9% at 1 month after surgery and all of these groups had no pain at 12 months after surgery. Conclusions: Referred symptoms of TMJ internal derangement such as headache, neck pain, shoulder pain were dramatically improved after surgical treatment of TMJ.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1993.05a
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• pp.90-90
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• 1993

When illustrating the therapeutical plan of laryngeal cancer, there are difficulties in obtaining the three dimensional volume of tumor, submucosal extension of tumor, and particularly whether or not invasion on laryngeal cartilage has occurred. In particular clinical significance is the invasion to the laryngeal framework, which correlates with poor prognosis due to high frequency of local recurrence and cervical metastasis. Therefore the purposes of histopathological evaluation according to serial section study after laryngectomy are firstly, apprehension of the spread of laryngeal cancer and the pattern of invasion to laryngeal cartilage and secondly, obtaining an aid to establish direction of management to make higher the validity of preoperative clinical diagnosis. The following results were obtained : 1. The pattern of tumor invasion in cartilage 1) The tumor invades ossified cartilage chiefly and invades nonossified cartilage in extensive lesion only. 2) The tumor spread through intramarrow space at invaded ossified cartilage with intact perichondrium. 3) The perichondrium is strong barrier. 2. The incidence of cartilage invasion in order of frequency is as follow thyroid, arytenoid, cricoid, epiglottic cartilage. 3. The transglottic cancer has higher incidence(811.8%)of cartilage invasion. 4. The sensitivity, specificity, and accuracy rate of preoperative CT scan was 100%, 62.5%, 82.3% respectively.

• Journal of Korean Clinical Nursing Research
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• v.14 no.1
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• pp.187-198
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• 2008

Purpose: Music intervention has long been used in research of patients undergoing surgical operation in reducing anxiety level and improve surgical outcome. However, there are few studies that have considered a patient's music preference. We investigated the effect of the tailored music intervention which chose music according to the patient's preference on anxiety level and vital signs. Method: The subjects were 50 patients who received regional anesthesia for surgical operation at D hospital in Pohang city from April, 2006 to November, 2006. All of the subjects were randomly assigned either music group (30 subjects) or non-music group (20 subjects). As the patients arrived in the operating room, vital signs were monitored until the subjects were transferred to the recovery room, while Spielberger's STAI-KYZ questionnaires were applied twice to measure preoperative and intra-operative anxiety. The data were analyzed by 2-test, t-test, one-way ANCOVA and repeated measures ANOVA using SPSS 12.0/PC+. Results: There were no significant differences between the two groups on vital signs. All of the vital signs increased when the subjects arrived in the operating room, but decreased quickly once the operation began, regardless of the groups. However, the music group reported significantly less intra-operative anxiety, compared to the non-music group (F=15.208, p<.000), when preoperative anxiety was treated as a covariance. Conclusion: The findings support that the use of music which was chosen by patients during the surgery significantly reduced patient's intra-operative anxiety during regional anesthesia.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.31 no.5
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• pp.429-434
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• 2009

Basal cell nevus syndrome is a rare inherited disorder characterized by mulitple cutaneous basal cell carcinoma, pits of the palms and soles, cysts of the jaws, skeletal abnormalities and ectopic calcifications. Currently there are new lines of investigation based on biomolecular studies, which aim at identifying the molecules responsible for these cysts and thus early allowing an early diagnosis of these patients. We report a case of a 9-year-old boy with the various manifestation of basal cell nevus syndrome, which are multiple odontogenic keratocysts, pits of the soles, bifid ribs, ectopic calcification, macrocephaly, and hypertelorism, etc. Total five odontogenic keratocysts were found. For the reduction of the size of the odon-togenic keratocysts, following preoperative marsupialization, there were surgically enucleated. And the impacted upper right lateral incisor and canine are tracted orthodontically.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.31 no.6
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• pp.509-514
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• 2005

Purpose: In order to clarify the clinical utility of the vertical height augmentation (VHA) genioplasty using autogenous iliac bone graft (IBG), this study examined the postsurgical changes in hard and soft tissues of the chin and the stability of the grafted bone. Patients and Methods: Twenty-three patients who had undergone VHA genioplasty using autogenous IBG were evaluated radiographically and clinically. A comparison study of the changes in hard to soft tissues after surgery in all 23 patients was performed with preoperative, 1-month, 3-months, 6-months, and/or 1-year postoperative lateral cephalograms by tracing. Stability, bone healing, and complication of the grafted bone was evaluated by follow-up roentgenograms and clinical observation. Results: Between the preoperative and 6-month postoperative tracings, an average vertical augmentation of the osseous segment was 4.2 mm at menton and that of the soft tissue menton was 4.0 mm. There was a high predictability of 1: 0.94 between the amounts of hard versus soft tissue changes with surgery in the vertical plane. The position of the genial bone segment was stable immediately after surgery and soft tissue was not changed significantly from 1 month to 1 year after operation. Clinical and radiological follow-up results of the iliac bone graft showed normal bony union and were generally stable. Conclusions: VHA genioplasty using IBG is a reliable method for predicting hard and soft tissue changes and for maintaining postoperative soft tissue of the chin after surgery.

• Imaging Science in Dentistry
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• v.47 no.3
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• pp.141-147
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• 2017

Purpose: The objective of this study was to compare the outcomes of surgical mini-implant placement when potential mini-implant sites were scanned using a lower-dose $180^{\circ}$ acquisition protocol versus a conventional $360^{\circ}$ acquisition protocol. Materials and Methods: Ten dentate human skulls were used to provide sites for potential mini-implant placement. The sites were randomly divided into 2 groups: $360^{\circ}$ and $180^{\circ}$ cone-beam computed tomography (CBCT) acquisition protocols. A small-volume $180^{\circ}$ CBCT scan and a $360^{\circ}$ CBCT scan of each site were acquired using a Morita Accuitomo-170 CBCT machine and then a mini-implant was placed. A follow-up $360^{\circ}$ CBCT scan was done as a gold standard to evaluate the location of the mini-implant and root perforation. Two raters evaluated the scans. Results: Ninety-eight percent of the mini-implants placed did not perforate any root structure. Two percent of the sites had an appearance suggestive of perforation. On a Likert scale, both raters agreed that their subjective evaluation of the diagnostic quality of the protocols, ability to make and read measurements of the sites, and preferences for the specified diagnostic task were comparable. The Cohen kappa showed high inter-rater and intrarater agreement. Conclusion: In this ex vivo study, we found that the $180^{\circ}$ rotational acquisition was as effective as the conventional $360^{\circ}$ rotational acquisition for the preoperative evaluation of potential mini-implant sites.

• Korean Journal of Bronchoesophagology
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• v.6 no.1
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• pp.7-15
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• 2000

Background and Objectives:Submucosal spread of hypopharyngeal canceris frequently incriminated for the high incidence of local recurrence after resection. Although mucosal spread is better detected by means of direct visualization, submucosal spread is better evaluated by using cross-sectional imaging rather than endoscopy. This study was designed to evaluate the efficacy of MRI in diagnosing involvement of inferior margin of hypopharyngeal cancer. Materials and Method : Eight patients with hypopharyngeal cancer underwent MRI prior to surgery. And postoperative histopathopogic involvement of tumor was compared with the preoperative MRI axial scan. Results : In preoperative MRI findings, involvement of pyriform sinus apex was 6 cases(definitive 5 cases, probable 1 cases), that of esophageal inlet was 1 case(probable), that of cervical esophagus was 1 case(probable). In postoperative histopathologic findings, the results were same. Conclusion : MRI evaluation for patient with hypopharyngeal cancer ensures accurate staging and provides essential information about the tumor involvement of inferior margin. And there is needed to be thin section thickness in evaluation of inferior margin of hypopharyngeal cancer.

• Journal of Korean Foot and Ankle Society
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• v.18 no.4
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• pp.173-177
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• 2014

Purpose: The purpose of this study is to evaluate the characteristics of hallux valgus with severe hallux valgus angle (HVA) and moderate intermetatarsal angle (IMA) after proximal chevron osteotomy. Materials and Methods: Between January 2008 and December 2010, 41 patients (48 feet) were treated with proximal chevron osteotomy and distal soft tissue procedure for symptomatic severe hallux valgus deformity ($HVA{\geq}40^{\circ}$). Patients were divided into two groups, group M (IMA< $18^{\circ}$) and group S ($IMA{\geq}18^{\circ}$). Mean age of patients was 55.7 years (34~70 years) in group M and 60.0 years (44~78 years) in group S. Mean duration of follow-up was 20.4 months (12~41 months) in group M and 18.5 months (12~35 months) in group S. Radiographic parameters, including HVA, IMA, sesamoid position, metatarsus adductus angle (MAA), and distal metatarsal articular angle (DMAA), were compared between groups. Clinical results were assessed using American Orthopaedic Foot and Ankle Society (AOFAS) score and visual analogue scale (VAS). Recurrence rate at the last follow-up was compared between group M and group S. Results: Preoperative HVA and grade of sesamoid position did not differ between the groups. However, immediate postoperative HVA and grade of sesamoid position were significantly larger in group M. Preoperative MAA and DMAA were significantly larger in group M. No significant difference in AOFAS score and VAS was observed between the groups at the last follow-up. Ten of the 27 feet (37.0%) in group M and two of the 21 feet (9.5%) in group S showed hallux valgus recurrence at the last follow-up. Group M showed a significantly higher recurrence rate than group S. Conclusion: Recurrence rate for severe hallux valgus with moderate IMA is higher than that of severe hallux valgus with severe IMA.

• Journal of Korean Foot and Ankle Society
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• v.18 no.4
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• pp.189-194
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• 2014

Purpose: The purpose of this study was to compare the clinical and radiologic results of arthrodesis between anterior approach and transfibular approach arthrodesis in ankle arthritis. Materials and Methods: There were 61 cases of ankle arthritis treated by anterior or transfibular ankle arthrodesis in our hospital from April 2008 to March 2012. We investigated 29 cases (27 patients) who underwent ankle arthrodesis with an anterior approach (15 cases) and transfibular approach (14 cases), and were followed for over two years. Clinically, American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, pain visual analogue scale (VAS), and subjective satisfaction degrees were evaluated. In addition, ankle coronal and sagittal alignments were evaluated using plain radiographs at 6 and 24 months, postoperatively. Results: Clinically, preoperative mean AOFAS score and VAS was 41.3 and 6.4, and were changed to 58.9 and 3.3 postoperatively in the anterior approach group. In the transfibular approach group, preoperative mean AOFAS score was 36.6 and VAS was 7.1, and they were changed to 54.9 and 3.4 postoperatively. However, no significant differences in the clinical results were observed between the two groups (p=0.297). Duration of attaining union was 8.1 weeks in the anterior approach group and 10.4 weeks in the transfibular approach group. Complications were delayed union in one case, nonunion in three cases, cancellous screw breakage in three cases, and complex regional reflex syndrome in one case. Conclusion: After transfibular ankle arthrodesis as treatment of ankle osteoarthritis, the tendency for valgus angulation of the ankle at the final follow-up was observed and 6.5 mm cancellous screw breakage occurred frequently. Therefore, in order to achieve better stability, it is necessary to use 6.5 mm cannulated screws rather than 6.5 mm cancellous screws for ankle arthrodesis.

• Journal of Korean Foot and Ankle Society
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• v.17 no.4
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• pp.294-301
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• 2013

Purpose: To report the clinical outcomes and complications of flexor hallucis longus (FHL) tendoscopy using 3 portals. Materials and Methods: Between January 2012 and April 2013, 10 patients (10 ankles) received tendoscopic surgery for the treatment of FHL tenosynovitis. Patients complaining of pain and tenderness along the course of FHL despite over 6 months of conservative treatments were indicated for surgery. The mean age was 41.7 years (range: 18-57) and the follow up period was 12.7 months (range: 6-20). Tendoscopy was performed using posteromedial, posterolateral, and plantar portals. Clinical evaluations included preoperative and postoperative visual analogue scale (VAS), American orthopaedic foot and ankle society (AOFAS) score, and patients' satisfaction. Results: Tendoscopic findings included tenosynovitis in 10 cases, degenerated vinculae in 6 cases, stenosis of the tendon at its entrance into the fibro-osseous tunnel in 5 cases, and degenerative partial tendon tear in 3 cases. Two cases had associated symptomatic os trigonum and 3 cases had posterior ankle impingement syndrome. Preoperative pain decreased from median VAS 6 (range: 4-10) to 2.1 (range: 1-5) at the last follow up and AOFAS score improved from 50.1 (range: 36-63) to 82.1 (range: 61-89) (p<0.05). Nine patients were satisfied or very satisfied with the outcome. Injury of the lateral plantar nerve occurred in one case. Conclusion: FHL tendoscopy using 3 portals is a feasible and useful minimal invasive surgical technique for the management of FHL tenosynovitis.