No abstract available.
Sarcoma*

There are a few reports on tarsal tunnel syndrome resulting from the intraneural ganglion. Although it can occur through a connection with the adjacent joint, there is no consensus on its pathogenesis and treatment method. This paper reports a case of tarsal tunnel syndrome resulting from the intraneural ganglion of the medial plantar nerve of the tibial nerve.
Consensus ; Ganglion Cysts* ; Joints* ; Methods ; Recurrence* ; Tarsal Tunnel Syndrome* ; Tibial Nerve*

Acute compartment syndrome of the thigh, which usually occurs in the anterior compartment, is a rare condition. It can have various causes including femur fractures, vessel injury, pseudoaneurysm of the femoral or popliteal artery, and use of anticoagulant. However, there have been few reports of acute compartment syndrome of the thigh without fracture caused by blunt trauma. We report 4 cases of acute compartment syndrome of the thigh without fracture caused by blunt trauma, in which three patients were treated with fasciotomy and a Vacuum-Assisted wound Closure system and the other one had a delayed diagnosis, and eventually underwent above-knee amputation.
Amputation ; Aneurysm, False ; Compartment Syndromes ; Delayed Diagnosis ; Femur ; Glycosaminoglycans ; Humans ; Popliteal Artery ; Thigh

Purpose: The purpose of this study was to evaluate the incidence of deep vein thrombosis (DVT) after various types of knee surgery and to identify patients at high risk. Materials and Methods: This retrospective was conducted using the medical records of knee surgeries conducted by one surgeon at Gachon University Gil Medical Center between May 2019 and December 2020. The occurrence of DVT was determined by venous ultrasonography 4 to 6 days after surgery, and the incidence of DVT was determined for arthroscopic ligament surgery, arthroscopic meniscus surgery, arthroplasty, and osteotomy. Patients diagnosed with DVT were treated with a pharmacological agent for 3 months, and DVT was reevaluated by Doppler sonography at 3 months postoperatively. Results: Among a total of 221 cases, 75 cases (33.9%) were diagnosed with DVT. The incidence of DVT was significantly dependent on type of surgery, that is, anterior cruciate ligament surgery (ACL) 29.4%, meniscus surgery 30.2%, artroplasty 33.3%, and osteotomy 52.4%. In 60 of the 75 cases, DVT was successfully managed without complication by pharmacologic treatment. On the other hand, in 3 cases, pharmacologic treatment was stopped due to side effects. The other 15 cases were managed conservatively. A significant correlation was found between tourniquet application and incidence of DVT, and in the arthroplasty group, age and DVT were significantly correlated. However, surgical time was not correlated with DVT. Conclusion The incidence of DVT after knee surgery is significantly dependent on type of surgery. We believe that the absence of any severe complication, such as systemic or pulmonary embolism, related to DVT was due to early detection and adequate pharmaceutical management. Furthermore, we recommend that tourniquet not to be applied to patients at high risk of DVT.

Purpose: Zirconia fixed partial dentures with mandibular 2nd premolar and 2nd molar as abutments are fabricated and then the effects of inter-abutment distance on fracture resistance of zirconia fixed partial dentures is studied. Materials and Methods: The materials used in this study are Cameleon S zirconia block and S2 zirconia block, which are divided into CS Group and S2 Group applying different inter-abutment distance for each material, and the sintered zirconia fixed partial denture was luted to the epoxy resin die using a temporary luting cement, and then the fracture resistance was measured by placing a 6 mm diameter hardened steel ball on the occlusal surfaces of the pontics and applying pressure at a cross head speed of 1.0 mm/min on a universal testing machine with a load cell of 5.0 kN. Results: The fracture resistance of zirconia fixed partial dentures is not significantly affected by inter-abutment distance The fracture resistance of zirconia fixed partial dentures in CS Group was significantly higher in 15 mm of inter-abutment distance than in 13 mm and 17 mm of inter-abutment distance (P < 0.05). The fracture resistance of zirconia fixed partial dentures in S2 Group was not significantly different between the three groups (P > 0.05). Conclusion The fracture resistance of zirconia fixed partial dentures with mandibular 2nd premolar and 2nd molar as abutments does not significantly affected by the inter-abutment distance.

BACKGROUND AND OBJECTIVES: This study is aimed at elucidating potential temporal associations between the occurrence of Kawasaki disease (KD) and various viral infections. SUBJECTS AND METHODS: We obtained monthly patterns of KD from the seventh nationwide survey and viral detection data from the Korea Centers for Disease Control and Prevention from 2009 to 2011 and evaluated temporal correlations between them for each month. The respiratory viruses detected using a multiplex real-time-polymerase chain reaction kit were influenza virus (A/H1N1, A/H3N2, A/H5N1, and B), adenovirus, parainfluenza virus (type 1, 2, 3), respiratory syncytial virus (type A, B), human rhinovirus, human coronavirus (OC43/229E, NL63), human bocavirus, and enterovirus. RESULTS: We obtained data from a total of 13031 patients who were treated for acute KD from 87 hospitals with pediatric residence programs. During this survey, KD showed highest overall incidence in summer and winter seasons and lowest incidence in February and October. We received viral detection data for a total of 14267 patients. Viral detection was highest during winter and spring seasons. The most commonly detected virus was human rhinovirus (32.6%), followed by influenza virus (26.8%). The monthly incidence of KD showed significant correlation with the monthly overall viral detection (p=0.022, r=0.382). In particular, human bocavirus and enterovirus have significant correlations with monthly patterns of KD occurrence (p=0.032 and p=0.007, respectively) and influenza virus correlated with KD occurrence with borderline significance (p=0.063). CONCLUSION: The temporal association between monthly occurrence of KD and viral detection suggests the etiologic importance of precedent infection in the development of KD.
Adenoviridae ; Centers for Disease Control and Prevention (U.S.) ; Coronavirus ; Enterovirus ; Human bocavirus ; Humans ; Incidence ; Korea ; Mucocutaneous Lymph Node Syndrome* ; Orthomyxoviridae ; Paramyxoviridae Infections ; Respiratory Syncytial Viruses ; Rhinovirus ; Seasons

Despite advances in surgical techniques and instrumentation, current intra-operative estimations of acetabular version in total hip arthroplasty are of limited accuracy. In the present study, two experienced orthopedic surgeons compared intra-operatively measured (using portable imaging) anteversions and vertical inclinations of acetabular components with those measured using standardized radiographs post-operatively in 40 patients. Of the all vertical inclinations measured from intra-operative radiographs, 72.5% (n=29) were within +/-2degrees, and 97.5% (n=39) were within +/-5degrees of those determined using post-operative radiographs, and for anteversion, 52.5% (n=21) were within +/-2degrees, and 97.5% (n=39) were within +/-5degrees. Post-operative radiographs demonstrated that 90.0% (n=36) of vertical inclinations and anteversions were within the adequate zone. Obviously, our method has its limitations, but the authors conclude that the method described in this article better allows surgeons to verify acetabular version intra-operatively. In particular, the described method is suitable in cases with a deformed acetabular anatomy and difficult revision surgery.
Acetabulum/radiography/*surgery ; Adult ; Aged ; Aged, 80 and over ; *Arthroplasty, Replacement, Hip ; Female ; Hip Joint/*radiography/surgery ; Hip Prosthesis ; Humans ; Imaging, Three-Dimensional/methods ; Intraoperative Care/*instrumentation/methods ; Male ; Middle Aged ; Prosthesis Fitting

BACKGROUND AND OBJECTIVES: The tympanosclerosis is an abnormal deposits of collagen materials on the lamina propria of the tympanic membrane or the middle ear mucosa. It usually appears as a whitish plaque on the tympanic membrane through otoscopic examination. The etiology of tympanosclerosis is not known, but there are some theories that attempt to explain the pathogenesis. The aim of this study is to understand the pathogenesis of tympanosclerosis and to find out the methods to minimize the occurrence of tympanosclerosis after ventilation tube insertion. MATERIALS AND METHODS: Otoscopic examination, impedance and pure tone audiometry were performed on 190 patients (306 ears) with serous otitis media, and on those who have undertaken ventilaton tube insertion from 1990 to 1998 at the otolaryngology department in Hanyang University Hospital. Then, the patients' medical and operative records were reviewed and analyzed in view of location and pathogenesis of tympanosclerosis. RESULTS: Incidence rate of tympanosclerosis was 42.5% in non-cleft patients and 61.9% in congenital cleft and palate patients. The rate increased when larger and heavier tube was used and the middle ear fluid was highly viscous. Most common sites for the development of tympanosclerosis were in the posteroinferior and anteroinferior portions of the tympanic membrane. Tympanosclerosis had little effect on hearing but in severe cases, it caused mild degree of hearing loss. CONCLUSION: We consider that tympanosclerosis is an inevitable result of ventilation tube insertion and its pathogenesis is multifactorial. We found that we can minimize the occurrence of tympanosclerosis by using small and light ventilation tubes, and avoid intraoperative bleeding and minimal mechanical trauma on the tympanic membrane by aspiring the middle ear fluid.
Audiometry ; Collagen ; Ear, Middle ; Electric Impedance ; Hearing ; Hearing Loss ; Hemorrhage ; Humans ; Incidence ; Mucous Membrane ; Myringosclerosis* ; Otitis Media with Effusion ; Otolaryngology ; Palate ; Tympanic Membrane ; Ventilation*

PURPOSE: To evaluate the results of mosaicplasty and microfracture after surgical treatments for symptomatic osteochondral lesion of talus (OLT) by second-look arthroscopy. MATERIALS AND METHODS: 7 cases of mosaicplasty and 7 cases of microfracture were reviewed who undertook second-look arthroscopy at 6 months or one year after undertaking mosaicplasty or microfracture for OLT between December 2004 and October 2005. The mean age at first operation was 43.6 years (Range, 20-59) (Mosaicplasty; 43.9 years, Microfracture; 43.4 years). The mean size of cartilage defect was 15.0 x 7.7 mm in mosaicplasty and 7.1 x 6.6 mm in microfracture. Clinical outcomes were evaluated by Freiburg ankle score. Cartilage healing state was evaluated by Insall's classification for chondromalasia during second-look arthroscopy. RESULTS: By the Freiburg ankle score, 9 ankles (6 in mosaicplasty, 3 in microfracture) had excellent and 5 (1 in mosaicplasty, 4 in microfracture) had good results at the times of second-look arthroscopy. By Insall's classification, consistency of the osteochondral grafts and congruity between grafts and native cartilage (Grade I) were shown in 9 (6 ankles in mosaicplasty, 3 ankles in microfracture), a fissuring (Grade II) in one ankle of mosaicplasty, a fasciculation (Grade III) in one ankle of microfracture, and partial exposure of subchondral bone (Grade IV) in 3 ankles of microfractures. CONCLUSION: Mosaicplasty was more excellent in consistency and hardness of cartilage than microfracture. In some cases of microfracture, cartilage healing was incomplete at 6 months postoperatively, so second-look arthroscopy is necessary to identify. If incomplete cartilage healing was shown, additional procedure such as microfracture or mosaicplasty was needed.
Ankle ; Arthroscopy* ; Cartilage ; Classification ; Fasciculation ; Hardness ; Mortuary Practice ; Talus* ; Transplants

PURPOSE: To tabulate underlying disease and to assess the clinical significance of CT-diagnosed spontaneouspneumonediastinum. MATERIALS AND METHODS: We retrospectively reviewed CT scans and medical records of 11consecutive patients with spontaneous pneumomediastinum, and analyzed their clinical history and course, and infive cases, pulmonary function. CT scans of 126 patients with idiopathic pulmonary fibrosis (IPF) collected whilethe 11 consecutive patients were being treated were analyzed for the prevalence of pneumomediastinum. We analyzedCT findings with respect to the amount and distribution of air in the mediastinum, and the presence or absence ofair outside the mediastinum. RESULTS: In the 11 patients, underlying diseases were IPF (n=4), bronchiolitisobliterans organizing pneumonia (BOOP)(n=2), bronchiectasis (n=2), tuberculous tracheal stenosis (n=1), andpulmonary tuberculosis with bullous emphysema (n=1); there was one without associated disease. Of the 126 patientswith IPF, four (3.2%) showed spontaneous pneumomediastinum. All ten with underlying diseases had severe dyspnea.In five patients, a pulmonary function test showed marked impairment. Two of four patients with IPF and both withBOOP died within 2 months of CT scanning, whereas the remaining six showed clinical improvement. The detectionrate of pneumomediastinum on plain chest radiograph was 82% (9/11). CT showed that mediastinal air was mostfrequently found in the retrosternal space. There were four cases of pneumothorax and two of subcutaneousemphysema. CONCLUSION: Spontaneous pneumomediastinum might be associated with idiopathic pulmonary fibrosis andmight be a poor prognostic factor in patients with IPF or BOOP.
Bronchiectasis ; Cryptogenic Organizing Pneumonia ; Emphysema ; Humans ; Idiopathic Pulmonary Fibrosis ; Mediastinal Emphysema* ; Mediastinum ; Medical Records ; Pneumonia ; Pneumothorax ; Prevalence ; Radiography, Thoracic ; Respiratory Function Tests ; Retrospective Studies ; Tomography, X-Ray Computed ; Tracheal Stenosis ; Tuberculosis