No abstract available.

Since the time when the lumbar discogram was used as the clinical diagnostic method for the first time in 1952, many problems have been pointed out to this method, and moreover, in presentday tendencies for the diagnostic method, the lumbar discogram is carried on even useless by majority. One of the important reasons is that so many studies for the lumbar discograms have reported so many false positive lumbar discograms at the high ratio. Hower we found a certain usefulness of the lumbar discogram incidental to the operation. The purposes of our operative lumbar discogram are those; 1) to observe the radiological configuration of the lumbar discogram. 2) to measure the amount of the the dye injected into normal and abnormal lumbar discs, especially in our Koreans. 3) for confirmation of the diagnosis when the myelographic finding is suspicious. 4) for confirmation of the Ievel especially when the number of the possible lesion is more than one. We investigated and analyzed the 35 lumbar discograms of 26 patients and compiled the statistics.
Diagnosis ; Humans ; Methods

The morphologic unit of the disease process currently referred to as Kaposi's sarcoma consists of a complex growth of vascular channels and mesenchymal cells of various types and in different phases of differentiation. Kaposi's sarcoma, with its characteristic skin lesion, is an entity familiar to the pathologist and dermatologist. This case report represents an unusal bone cortex involvement of Kaposi's sarcoma with skin lesion in a lower extremity, which has survived for 26 years without no specific abnormality in laboratory study and no specific clinical change.
Lower Extremity ; Sarcoma, Kaposi ; Skin

Anterior cervical interbody fusion and posterior lumbar interbody fusion of the Clowards technique is based on those; 1. removal of the painful disc. 2. stabilization of the unstable joint by interbody fusion. This technique has many advantages compared with the others including followings; 1. very simple technique. 2. low morbidity. 3. rapid recovery. 4. no need of the external support device postoperatively. We operated 5 cervical spines and 2 lumbar ones. This is the report of their follow up study in 2 to 2 years.
Follow-Up Studies ; Joints ; Spine

Giant cell tumor is a predominantly benign condition but often the tumor is locally aggressive and tends to have high rate of recurrence and it can evolve into a malignant tumor. Thus the lesions have a practically difficult therapeutic problem for the orthopaedic surgeon and any method of treatment has not been satisfied. Between March 1984 and March 1993, clinical observation was carried out on 22 cases of giant cell tumor of bone to analyse the recurrence rate and functional evaluation of the joint according to the treatment methods, pathological grade and cortical destruction. The mean follow-up time was 75. 2 months. The recurrence rate of the intralesional excision group was 54.5% and that of the wide excision group was 9%, There was no relationship between the pathologic grade and recurrence rate. There was no recurrent case in the grade I cortical destruction but almost all of recurrence was occurred in the grade I or II cortical destruction. The functional result of the giant cell tumor occurred around the knee joint was that the mean ratings in the intralesional excision group were 79% and in the wide excision group were 51%. In conclusion, to achieve better joint function and less recurrence rate, intralesional or marginal excision with heat using bone cement or with chemical cauterization using phenol and alcohol can be used for cases of radiological grade I or II, and wide excision for grade III.
Cautery ; Follow-Up Studies ; Giant Cell Tumor of Bone ; Giant Cell Tumors ; Giant Cells ; Hot Temperature ; Joints ; Knee Joint ; Methods ; Phenol ; Recurrence

No abstract available.
Sarcoma* ; Uterus*

No abstract available.
Cervix Uteri* ; Female

Purpose: The purpose of this study is to use finite element analysis to predict the fatigue life of an implant system subjected to fatigue load by mastication (chewing force). The reliability and the stability of implant system can be defined in terms of the fatigue strength. Not only an implant is expensive but also it is almost impossible to correct after it is inserted. From a bio-engineering standpoint, the fatigue strength of the dental implant system must be evaluated by simulation (FEA). Material and Methods: Finite element analysis and fatigue test are performed to estimate the fatigue strength of the implant system. Mesh of implant is generated with the actual shape and size. In this paper, the fatigue strength of implant system is estimated: U-fit (T.Strong, Korea, internal type). The stress field in implant is calculated by elastic-plastic finite element analysis. The equivalent fatigue stress, considering the contact and preload stretching of a screw by torque for tightening an abutment, is obtained by means of Sine's method. To evaluate the reliability of the calculated fatigue strength, fatigue test is performed. Results: A comparison of the calculated fatigue strength with experimental data showed the validity and accuracy of the proposed method. The initiation points of the fatigue failure in the implant system exist in the region of high equivalent fatigue stress values. Conclusion: The above proposed method for fatigue life estimation can be applied to other configurations of the differently designed and improved implant. In order to prove reliability of prototype implant, fatigue test should be executed. The proposed method is economical for the prediction of fatigue life because fatigue testing, which is time consuming and precision-dependent, is not required.
Bioengineering ; Dental Implants ; Fatigue* ; Finite Element Analysis ; Korea ; Mastication ; Torque

BACKGROUND: Carbapenem-resistant Enterobacteriaceae (CRE) with acquired metallo β-lactamase (MBL) resistance have been increasingly reported worldwide and associated with significant mortality and morbidity. Here, an outbreak of genetically related strains of Klebsiella pneumoniae producing the imipenemase (IMP)-1 MBL in a medical intensive care unit (MICU) in Korea is reported. METHODS: Since isolating carbapenem-resistant K. pneumoniae (CRKP) at the MICU of the hospital on August 10, 2011, surveillance cultures for CRE in 31 hospitalized patients were performed from August to September 2011. Carbapenem resistance was determined based on the disk diffusion method outlined in the Clinical and Laboratory Standards Institute guidelines. Polymerase chain reaction (PCR) was performed for genes coding for β-lactamase. Associations among isolates were assessed via pulsed-field gel electrophoresis (PFGE). In addition, a surveillance study of environmental cultures and health-care workers (HCWs) was conducted in the MICU during the same time frame. RESULTS: During the study period, non-duplicated CRKP specimens were discovered in four patients in the MICU, suggestive of an outbreak. On August 10, 2011, CRKP was isolated from the sputum of a 79-year-old male patient who was admitted to the MICU. A surveillance study to detect additional CRE carriers by rectal swab revealed an additional three CRKP isolates. PCR and sequencing of the four isolates identified the presence of the IMP-1 gene. In addition, PFGE showed that the four isolated strains were genetically related. CRE was not identified in specimens taken from the hands of HCWs or other environmental sources during surveillance following the outbreak. Transmission of the carbapenemase-producing Enterobacteriaceae strain was controlled by isolation of the patients and strict contact precautions. CONCLUSIONS: This study shows that rapid and systemic detection of CRE and strict infection controls are important steps in preventing nosocomial transmission.
Aged ; Clinical Coding ; Critical Care* ; Diffusion ; Disease Outbreaks ; Drug Resistance, Bacterial ; Electrophoresis, Gel, Pulsed-Field ; Enterobacteriaceae ; Hand ; Humans ; Infection Control ; Intensive Care Units* ; Klebsiella pneumoniae* ; Klebsiella* ; Korea ; Male ; Methods ; Mortality ; Pneumonia ; Polymerase Chain Reaction ; Sputum

No abstract available.
Cesarean Section* ; Female ; Pregnancy