Colles' fracture is a common injury encountered in emergency departments. Despite the frequent experience of every orthopedic surgeon with Colles' fracture, considerable variation remains in the treatment of fracture of the distal radius. Everyone nearly agress that reduction of the fracture is not difficult, but maintenance of reduction is the problem. Eighty patients with Colles' fracture were treated with closed reduction and percutaneous pinning under the C-arm fields and followed up more than 1 year, from January 1990 to May 1993 at the Department of Orthopedic Surgery, Dae Han Hospital. The results of this study were as follows: 1. The fractures were classified according to the system of Gartland and Werley. Of the 80 cases, 12(5%) were type 1; 25(31%) type 2; and 43(54%) type 3. 2. Complications were such as; temporary neuropathy of median nerve 2 cases, redisplacement 2 cases, radiocarpal arthritis 1 cases, stiff hand 1 case and shoulder hand syndrome 1 case. 3. The overall assessment showed exellent in 29 patients(36.2%), good in 44 patients(55,0%) and poor in 7 patients(8.8%) under the subjective and objective criteria of Gartland and Werley and the objective criteia of Scheck. 4. The results were mainly correlated with maintenance of an anatomical reduction. 5. The percutaneous pinning was suitable for anatomical restoration and maintence, had less com plication and more advantage such as the early range of joint and simple technique. Conclusively, it was considered to be one of ideal method for the treatment of Colles' fracture in selected cases.
Arthritis ; Colles' Fracture ; Emergency Service, Hospital ; Hand ; Humans ; Joints ; Median Nerve ; Methods ; Orthopedics ; Osteotomy ; Radius ; Reflex Sympathetic Dystrophy

With porcine vertebrae, the static and dynamic holding power of the pedicle screws under various conditions were measured to understand the biomechanical nature of the transpedicular screw fixation in spine. The objectives of the present study were; (1) to find the correlation between the insertion depth of the screw and the resulting holding power, (2) to determine the effect of bone cement augmentation on the screw fixation in a loosened hole, and (3) to assess the load-sharing mechanism between the cortical and the cancellous one surrounding the screw in this fixational system. The geomorphological characteristics of each porcine vertebra was measured directly with a micro-caliper. The bone mineral density of the specimens was also measured. Material with screw was holded in the fixed cross head of material testing system(Autograph E-10T). Testing force was applied and graph was obtained in the chart record. The results of the static pull-out tests in this study showed that there was a statistically-significant positive correlation between the screw diameter and the pull-out resistance(p < 0.05). The strength of the fixation did not actually increase as much as the insertion depth of the screw increased in these tests(r=0.457). In low-cycle fatigue tests, the increased number of cycles was required to clinical failure in the deeper-inserted crews. Considering the mechanical failure, a statistically-significant positive correlation between the failure cycle and the insertion depth was observed in both deep and shallow insertion groups(p < 0.05). Nonpressurized PMMA augmentation appeared to restore the ability of the screws to withstand pullout loading of the original value. On the effect of the cortical and cancellous bone, the most important factor was the cortical bone of the entrance near the screw.
Bone Density ; Fatigue ; Head ; In Vitro Techniques ; Pedicle Screws ; Polymethyl Methacrylate ; Spine

Spontaneous pneumothorax is a rare complication of pulmonary metastatic disease, most often following chemotherapy for osteogenic sarcomas, primary lung cancer or malignant germ cell tumors. Intensive chemotherapy may theoretically increase the risk of pneumothorax in patients with manifest or occult lung metastases by inducing rapid lysis of the tumor tissue and by interfering with repair processes. We present a case of patient with spontaneous pneumothorax after the introduction of chemotherapy for metastatic choriocarcinoma and review the literature and discuss the possible pathophysiologic mechanisms.
Choriocarcinoma* ; Drug Therapy* ; Female ; Humans ; Lung ; Lung Neoplasms ; Neoplasm Metastasis ; Neoplasms, Germ Cell and Embryonal ; Osteosarcoma ; Pneumothorax* ; Pregnancy

Abdominal wall endometriosis secondary to cesarean section is very rare condition, being reported in less than 0.5% of patients undergoing cesarean section. Moreover, parenchymal pulmonary endometriosis is a rare gynecologic problem, characterized by cyclic hemoptysis. We experienced 38 years old female patient who had had cyclically appearing painful abdominal wall mass after cesarean section pathologically proven endometriosis and 33 year-old female patient with recurrent catamenial hemoptysis localized with CT scanning, and then treated with GnRH agonist. So, we present two cases with a brief review of literatures.
Abdominal Wall ; Adult ; Cesarean Section* ; Cicatrix* ; Endometriosis* ; Female ; Gonadotropin-Releasing Hormone ; Hemoptysis ; Humans ; Pregnancy ; Tomography, X-Ray Computed

BACKGROUND: Idiopathic hypoparathyroidism is a relatively rare disease characterized by hypocalcemia and hyperphosphatemia due to parathyroid hormone deficiency of unknown cause. It usually develop at young age and various clinical symptoms and signs accompanied with hypocalcemia develop at late period. And rarely associated with polyglandular autoimmune syndrome during follow-up. So we reviewed retrospectively our clinical experiences in diagnosis and management. METHODS: We observed the 6 cases with idiopathic hypoparathyroidism from 1986 to 2002. Four female and two male patients were examined demographic characteristics, clinical manifestations, laboratory findings, radiologic finding, and occurrence of polyglandular autoimmune syndrome. RESULTS: All patients aged from 18 to 51 years and had no familial history. The most frequent two symptoms of idiopathic hypoparathyroidism were paresthesia (67%) and tetany (67%). The incidence of Chvostek's and Trousseau's sign were 83% and 67%, respectively. From the history taking, patient who had psychotic problem was two, ocular lesion was two, and Graves's disease was one before admission. One patient had transient hypogonadism because of acute illness but recovered during follow-up. One patient developed primary adrenal insufficiency after 2 years. Neuroimaging study revealed bilateral calcification and ECG showed Q-T interval prolong. CONCLUSION: Idiopathic hypoparathyroidism may be suspected in patients with various neurologic symptoms and signs associated with hypocalcemia. It was difficult to predict other endocrine dysfunction at diagnosis. Therefore, we need to follow-up laboratory examinations for early detection of accompanied autoimmune disease in idiopathic hypoparathyroidism patient.
Addison Disease ; Autoimmune Diseases ; Diagnosis ; Electrocardiography ; Female ; Follow-Up Studies ; Humans ; Hyperphosphatemia ; Hypocalcemia ; Hypogonadism ; Hypoparathyroidism* ; Incidence ; Male ; Neuroimaging ; Neurologic Manifestations ; Parathyroid Hormone ; Paresthesia ; Rare Diseases ; Retrospective Studies ; Tetany

PURPOSE: We developed predictive models using different programming languages and different computing platforms for machine learning (ML) and deep learning (DL) that classify clinical diagnoses in patients with epiphora. We evaluated the diagnostic performance of these models. METHODS: Between January 2016 and September 2017, 250 patients with epiphora who underwent dacryocystography (DCG) and lacrimal scintigraphy (LS) were included in the study. We developed five different predictive models using ML tools, Python-based TensorFlow, R, and Microsoft Azure Machine Learning Studio (MAMLS). A total of 27 clinical characteristics and parameters including variables related to epiphora (VE) and variables related to dacryocystography (VDCG) were used as input data. Apart from this, we developed two predictive convolutional neural network (CNN) models for diagnosing LS images. We conducted this study using supervised learning. RESULTS: Among 500 eyes of 250 patients, 59 eyes had anatomical obstruction, 338 eyes had functional obstruction, and the remaining 103 eyes were normal. For the data set that excluded VE and VDCG, the test accuracies in Python-based TensorFlow, R, multiclass logistic regression in MAMLS, multiclass neural network in MAMLS, and nuclear medicine physician were 81.70%, 80.60%, 81.70%, 73.10%, and 80.60%, respectively. The test accuracies of CNN models in three-class classification diagnosis and binary classification diagnosis were 72.00% and 77.42%, respectively. CONCLUSIONS ML-based predictive models using different programming languages and different computing platforms were useful for classifying clinical diagnoses in patients with epiphora and were similar to a clinician's diagnostic ability.

PURPOSE: We developed predictive models using different programming languages and different computing platforms for machine learning (ML) and deep learning (DL) that classify clinical diagnoses in patients with epiphora. We evaluated the diagnostic performance of these models.METHODS: Between January 2016 and September 2017, 250 patients with epiphora who underwent dacryocystography (DCG) and lacrimal scintigraphy (LS) were included in the study. We developed five different predictive models using ML tools, Python-based TensorFlow, R, and Microsoft Azure Machine Learning Studio (MAMLS). A total of 27 clinical characteristics and parameters including variables related to epiphora (VE) and variables related to dacryocystography (VDCG) were used as input data. Apart from this, we developed two predictive convolutional neural network (CNN) models for diagnosing LS images. We conducted this study using supervised learning.RESULTS: Among 500 eyes of 250 patients, 59 eyes had anatomical obstruction, 338 eyes had functional obstruction, and the remaining 103 eyes were normal. For the data set that excluded VE and VDCG, the test accuracies in Python-based TensorFlow, R, multiclass logistic regression in MAMLS, multiclass neural network in MAMLS, and nuclear medicine physician were 81.70%, 80.60%, 81.70%, 73.10%, and 80.60%, respectively. The test accuracies of CNN models in three-class classification diagnosis and binary classification diagnosis were 72.00% and 77.42%, respectively.CONCLUSIONS: ML-based predictive models using different programming languages and different computing platforms were useful for classifying clinical diagnoses in patients with epiphora and were similar to a clinician's diagnostic ability.
Classification ; Dataset ; Diagnosis ; Humans ; Lacrimal Apparatus Diseases ; Learning ; Logistic Models ; Machine Learning ; Nuclear Medicine ; Programming Languages ; Radionuclide Imaging

Tinea incognito (TI) is a dermatophytic infection which has lost its typical clinical appearance because of improper use of steroids or calcineurin inhibitors. The incidence of TI is increasing nowadays. We conducted retrospective review on 283 patients with TI from 25 dermatology training hospitals in Korea from 2002-2010 to investigate the demographical, clinical, and mycological characteristics of TI, and to determine the associated risk factors. More than half (59.3%) patients were previously treated by non-dermatologists or self-treated. The mean duration of TI was 15.0 +/- 25.3 months. The most common clinical manifestations were eczema-like lesion, psoriasis-like, and lupus erythematosus-like lesion. The trunk and face were frequently involved, and 91 patients (32.2%) also had coexisting fungal infections. Among 67 isolated strains, Trichophyton rubrum was the most frequently detected (73.1%). This is the largest study of TI reported to date and the first investigational report concerning TI in Korea. We suggest that doctors should consider TI when a patient has intractable eczema-like lesions accompanied by tinea pedis/unguium. Furthermore, there should be a policy change, which would make over-the-counter high-potency topical steroids less accessible in some countries, including Korea.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Demography ; Eczema/pathology ; Face/pathology ; Female ; Humans ; Lupus Erythematosus, Cutaneous/pathology ; Male ; Middle Aged ; Psoriasis/pathology ; Republic of Korea ; Retrospective Studies ; Risk Factors ; Tinea/*diagnosis/microbiology ; Trichophyton/isolation & purification ; Young Adult