1.Fatigue Failure of Wire in Orthopaedic Use
In KIM ; Han CHANG ; Kyung Hwan CHOI
The Journal of the Korean Orthopaedic Association 1988;23(5):1350-1356
Orthopaedic wire has been used widely as a good internal fixator in cases of fracture, the ligament reconstruction, and for the stabilization of cervical spine. But if it is used inappropriately, a wire can be easy to fail by elongation, untwisting, or breakage. Among them, the most common failure of wire is breakage. To clarify the mechanism and the causes of wire failure, the authors analysed serial roentgenograms and scanning electronmicroscopic findings of broken wire in total 13 cases, which were experienced at the department of orthopaedic surgery, St. Mary's Hospital, Catholic University Medical College From January 1981 to December 1987. The results obtained were as follows :1. The mechanism of wire failure were classified into the 4 types ; minor continual flexing motion in 6 cases, repeated minor back and forth torsion in 1 case, tension failure in 2 cases and combined type in 4 cass. 2. The causes of wire failure were in appropriate use and inadequte application, a lack of s ufficient mechanical strength, micromotion due to inadequate postoperative imm obilization, early mobilization before tissue healing as well as certain injuries to the wire during handling in operation.
Early Ambulation
;
Fatigue
;
Internal Fixators
;
Ligaments
;
Spine
2.Risk of Intestinal Cancer in Inflammatory Bowel Disease: A Population-based Study from Olmsted County, innesota.
The Korean Journal of Gastroenterology 2006;48(1):58-61
No abstract availble.
3.Elevation of alul-induced frequencies of chromosomal aberrations and sister chromatid exchanges in CHO cells substituted with 5-bromodeoxyuridine by ammonium sulfate.
In Jang CHOI ; Ihn Hwan LEE ; Sung Ik CHANG
Korean Journal of Anatomy 1991;24(1):61-69
No abstract available.
Ammonium Compounds*
;
Ammonium Sulfate*
;
Animals
;
Bromodeoxyuridine*
;
CHO Cells*
;
Chromosome Aberrations*
;
Cricetinae
;
Humans
;
Siblings*
;
Sister Chromatid Exchange*
4.The radiographic findings of cerebello-pontine angle lesions
Young Hwan JUN ; Byung Ihn CHOI ; Kee Hyun CHANG
Journal of the Korean Radiological Society 1983;19(2):314-323
Thirty-five cerebello-pontine angle lesions were diagnosed with simple skull X-ray, CT, and angiography atSeoul National University Hospital from Sept. 1978 through Aug. 1982. The radiographic findings were analysed withemphasis on the differential points of CT among the major three cerebello-pontine angle tumors; acousticneurinoma, meningioma and epidermoid. The results are as follows; 1. Among the 35 cases of cerebello-pontine anglelesions, 19 cases were acoustic neurinoma. 4 cases miningioma, 4 cases epidermoid, 2 cases metastasis, 1 caseschoroid plexus papilloma, 1 case arteriovenous malformation, and 3 cases intra-axial posterior fossa tumors. 2.The characteristic radiographic findings of acoustic neurinoma were windening of internal auditory canal, petrousbone erosion, posterior extension of tumor at the level of internal autidory canal, hypo or isodense mass onpre-contrast CT with high enhancement after intravenous contrast infusion, and cystic change within the mass. 3.Meningioma shows anterior extenstion of the lesion at the level of internal auditory canal, broad base and obtuseangle sign of the lesion with petrous bone, hyperdense mass on precontrast CT. with highly homogeneous enhancementafter intravenous contrast infusion. 4. Epidermoid characteristically shows hypodense mass on precontrast CT withno change after intravenous contrast infusion. 5. The differential points of the major 3 cerebello-pontine tumorswere bone change, mass location, attenuation , degree of attachment to petrous bone, and cystic change.
Angiography
;
Arteriovenous Malformations
;
Infratentorial Neoplasms
;
Meningioma
;
Neoplasm Metastasis
;
Neuroma, Acoustic
;
Papilloma
;
Petrous Bone
;
Skull
5.A case of cutaneous T cell lymphoma (sezary syndrome).
Chang Hwan LEE ; Seong Hee LIM ; Wang Hee YOO ; Soo Mi CHOI ; Chang Yeol YIM
Korean Journal of Hematology 1993;28(1):171-177
No abstract available.
Lymphoma, T-Cell, Cutaneous*
6.Segmental Resection and Reimplantation with an Autoclaved Bone for Treatment of Malignant Disease
Kee Chang SUNG ; Chang Ju LEE ; Seung Rim PARK ; Jeong Hwan OH ; Soo Jung CHOI
The Journal of the Korean Orthopaedic Association 1987;22(3):825-829
Wide resection is an acceptable alternative to amputation for the management of primary sarcomas of the long bones or pelvis. The resected bone can be debrided of gross tumor tissue, autoclaved, and than replaced to reconstruct the limb anatomically. The procedure can be combined with prosthetic reconstruction of adjacent joints with sufficient strength to allow early unprotected weight-bearing. We had an experience of a large segmental defect in the shaft of the humerus after wide resection due to.a low grade malignant chondrosarcoma without extension to the surrounding soft tissues and this case had been managed by reimplantation after autoclaving the locally resected segment and autogenous iliac bone graft with a sound union and the favorable functional outcomes. So we are reporting this case with bibliographic reviews as a possible method of reconstruction for the management of the segmental defect which was produced by a local resection for a low grade malignancy.
Amputation
;
Chondrosarcoma
;
Extremities
;
Humerus
;
Joints
;
Methods
;
Pelvis
;
Replantation
;
Sarcoma
;
Transplants
;
Weight-Bearing
7.A clinical review of fistula-in-ano.
Chung Hwan CHOI ; Joong Kyou KIM ; Yong Ki PARK ; Chang Rock CHOI
Journal of the Korean Society of Coloproctology 1993;9(3):255-260
No abstract available.
8.Mechanical ventilator care in the newborn infants.
Young Pyo CHANG ; Yong Won PARK ; Won Soon PARK ; Jung Hwan CHOI ; Chong Ku YUN
Journal of the Korean Pediatric Society 1991;34(11):1526-1533
No abstract available.
Humans
;
Infant, Newborn*
;
Respiration, Artificial
;
Survival Rate
;
Ventilators, Mechanical*
9.Diagnosis of ulcerative colitis.
Chang Hwan CHOI ; Young Ho KIM
Korean Journal of Medicine 2009;76(6):649-653
Ulcerative colitis (UC) is a chronic inflammatory disease of the colon that is confined to the mucosa and submucosa. The diagnosis is based on a combination of clinical, endoscopic, and histological characteristics, as no single finding is diagnostic for UC. The most important symptoms of UC are rectal bleeding, urgency, and diarrhea. The typical endoscopic feature of UC is continuous, circumferential, and symmetric colonic involvement. The inflammation involves the rectum and may extend proximally. The mucosal biopsy shows crypt architecture distortion, mixed inflammatory cell infiltration in the lamina propria, increased plasma cells near the crypt bases, and basal lymphoid aggregates. In addition, many diseases, such as infectious causes, should be excluded from the differential diagnosis. Finally, an evaluation of the extent and severity of UC is important in determining how to treat patients.
Biopsy
;
Colitis, Ulcerative
;
Colon
;
Colonoscopy
;
Diagnosis, Differential
;
Diarrhea
;
Hemorrhage
;
Humans
;
Inflammation
;
Mucous Membrane
;
Plasma Cells
;
Rectum
;
Ulcer
10.Do Patients With Irritable Bowel Syndrome Exhale More Hydrogen Than Healthy Subjects in Fasting State?.
Journal of Neurogastroenterology and Motility 2010;16(4):450-451
No abstract available.
Fasting
;
Humans
;
Hydrogen
;
Irritable Bowel Syndrome