2.Lengthening & Deformity Correction in Upper Extremities by the Ilizarov Method
Soo Bong HAHN ; Hui Wan PARK ; Ju Hyung YOO ; Joong Won HA
The Journal of the Korean Orthopaedic Association 1996;31(4):761-769
We report our series of the Ilizarov surgery for lengthening and deformity correction in upper extremity at the Severance Hospital and the Yong-Dong Severance Hospital between February 1992 and October 1994. We performed the Ilizarov surgery in 12 limb segments, there were 3 humerus, 5 radius, 3 ulna and 1 metacarpal bone. The etiologies of the limb length discrepancies were 7 posttraumatic physeal injuires, 2 congenital deformities, 1 posttraumatic bone loss, 1 posttraumatic amputation and 1 postinfectious physeal injury. The goals of treatment were bone lengthening alone in 8 cases, bone lengthening and deformity correction including angular correction in 4 cases. The bone was lengthened between 1.0 cm and 9.2 cm (mean 3.7 cm) representing a 8.1% to 63.0% (mean 24.5%) increase in length. The healing index varies from 1.0 mos/cm to 10.5 mos/cm (mean 3.4 mos/cm) except three cases which need additional fixation with plate and screws add to wedge osteotomy. By radiologic appearance of the distraction callus, the straight type were 6 cases, the attenuated type were 4 cases and the pillar type were 2 cases. The healing indices of each type were 1/5 mos/cm, 7.7 mos/cm and 12.4 mos/cm, respectively. In conclusion, lengthening and deformity correction of the upper extremity can be successfully achieved by gradual mechanical distraction using the Ilizarov method. In case of pillar type, healing index was high and therefore control of the rate and the rhythm should be tried. If this control is of no use, early interventional procedure would be beneficial. The healing index of the straight type was much lower than that of the attenuated or the pillar type.
Amputation
;
Bone Lengthening
;
Bony Callus
;
Congenital Abnormalities
;
Extremities
;
Humerus
;
Ilizarov Technique
;
Osteotomy
;
Radius
;
Ulna
;
Upper Extremity
3.Recurrence According to Grade after BCG Intravesical Therapy in Stage T1 Bladder Cancer.
Hyung Il LEE ; Dal Bong HA ; Kyung Seop LEE
Korean Journal of Urology 2002;43(6):486-489
PURPOSE: We compared the recurrence rate and mean interval to recurrence according to tumor grade after complete transurethral resection and adjuvant intravesical instillation with bacillus Calmette-Guerin (BCG), in patients with stage T1 transitional cell carcinoma of the bladder. MATERIALS AND METHODS: Between January 1994 and May 2000, 31 patients presenting to our hospital with T1 superficial bladder cancer received adjuvant intravesical instillation with BCG after complete transurethral resection of the bladder tumor. Tumors with CIS lesion or recurrent tumors were excluded. The recurrence rates, mean interval to recurrence, tumor size and number of tumors were compared according to tumor grade. RESULTS: Of the 31 patients, 5 presented with grade I tumor, 17 with grade II tumor and 9 with grade III tumor. Mean follow-up period was 22 months (range 6-58) and mean tumor sizes according to tumor grade were 1.6, 1.6 and 1.7cm in grade I, II and III, respectively. Twelve (38.7%) patients experienced tumor recurrence. The recurrence rates according to tumor grade were 20.0%, 41.2% and 44.4% in grade I, II and III, respectively. Mean interval to recurrence were 40, 11.4 and 7.5 months, respectively. CONCLUSIONS: Our results suggest that the recurrence rates were higher in grade II and III tumors than in grade I tumor. Therefore close follow-up is necessary in both grade II and III tumors.
Administration, Intravesical
;
Bacillus
;
Carcinoma, Transitional Cell
;
Follow-Up Studies
;
Humans
;
Mycobacterium bovis*
;
Recurrence*
;
Urinary Bladder Neoplasms*
;
Urinary Bladder*
4.Diagnostic Value for Early Detection of Prostate Cancer of the Digital Rectal Examination, Serum Prostate Antigen and Transrectal Ultrasonography.
Hyung Jun CHANG ; Houng Gyu SOHN ; Dal Bong HA ; Kyung Seop LEE
Korean Journal of Andrology 1999;17(1):39-44
PURPOSE: There diagnostic modalities have been commonly used to detect prostate cancer to date: digital rectal examination (DRE), serum prostate specific antigen (PSA) and transrectal ultrasonography(TRUS). We evaluated the diagnostic values of these three modalities in the early detection of prostate cancer. MATERIALS AND METHODS: We analysed 215 patients with low urinary tract symptoms who had pathologic diagnosis for prostatic cancer was possible by biopsy or transurethral resection. Transectal ultrasonography guided sextant biopsies were performed if the PSA level was greater than 4.0 ng/ml or DRE was suspicious, even if TRUS revealed no ateas suspicious for cancer. TURP were performed without TRUS or biopsies if the PSA level was lesser than 4.0 ng/ml and DRE was negative. RESULTS: Of the 215 patients, 36 (16.7%) revealed prostate cancer. Positive predictive value, sensitivity and specificity was 37.0%. 83.3%. 71.5% for DRE, 30.0%, 91.7%, 58.3% for PSA and 27.6% 58.3%. 43.3% for TRUS respectively. Positive findings on serum PSA or DRE or both tests detected significantly more tumors(97.2%, 35of 36 cancers) than only PSA (91.7%, 33 for 36 cancers), DRE (83.3%, 30 of 36 cancers) and TRUS (60.0%, 21 of 35 cancers) alone. CONCLUSIONS: These result shows that DRE is more valuable and cost effective method for detection of prostate cancer than serum PSA and the use of DRE in conjunction with serum PSA enhances prostate cancer detection.
Biopsy
;
Diagnosis
;
Digital Rectal Examination*
;
Humans
;
Prostate*
;
Prostate-Specific Antigen
;
Prostatic Neoplasms*
;
Sensitivity and Specificity
;
Transurethral Resection of Prostate
;
Ultrasonography*
;
Urinary Tract
5.The evaluation of the combined use of serum ?hCG and ultrasound in diagnosis of ectopic pregnancy.
Jong Suk KO ; Ha Bong KIM ; Myeong Suk LEE ; Hyung Sun RYU ; Ho Jun CHOI ; Seung Kwan SHIN
Korean Journal of Obstetrics and Gynecology 1993;36(7):1407-1415
No abstract available.
Diagnosis*
;
Female
;
Pregnancy
;
Pregnancy, Ectopic*
;
Ultrasonography*
6.Effect-site concentration of remifentanil for blunting hemodynamic response to double lumen endobronchial intubation during target controlled infusion-total intravenous anesthesia using propofol with remifentanil.
Bong Ha HEO ; Myung Ha YOON ; Hyung Gon LEE ; Woong Mo KIM
Korean Journal of Anesthesiology 2009;57(1):8-12
BACKGROUND: This study was undertaken to determine the effect-site concentration of remifentanil for blunting hemodynamic responses to double lumen endobronchial intubation during target controlled infusion (TCI)-total intravenous anesthesia (TIVA) using 4.0 microg/ml of propofol with remifentanil. METHODS: Sixty patients (American society of anesthesiologists physical status classification 1 or 2) were randomly allocated according to the target effect-site concentration of remifentanil (R3.0: remifentanil 3.0 ng/ml; R3.5: remifentanil 3.5 ng/ml; R4.0: remifentanil 4.0 ng/ml). The effect-site concentration of propofol at loss of consciousness was recorded. Mean arterial pressure (MAP), heart rate (HR) and bispectral index (BIS) were recorded at just before remifentanil administration (baseline), at the time of target effect site concentration of remifentanil and propofol, at just before intubation and 1, 2, 3 min after intubation. RESULTS: MAP was significantly increased compared with baseline at 1, 2 min after intubation in R3.0, but was significantly decreased in R4.0. MAP of R3.5 was not different from the baseline after intubation. HR was significantly decreased compared with baseline at the time of target effect site concentration of propofol and immediate before intubation in R3.5 and R4.0. After intubation, HR was significantly increased compared with baseline at only 1 min after intubation and returned to the baseline in R3.0. However, HR was continuously decreased in R4.0. CONCLUSIONS: These findings suggest that effective target effect-site concentration of remifentanil for blunting hemodynamic responses to double lumen endotracheal intubation was 3.5 ng/ml during TCI-TIVA using 4.0 microgram/ml of propofol with remifentanil.
Anesthesia, Intravenous
;
Arterial Pressure
;
Heart Rate
;
Hemodynamics
;
Humans
;
Intubation
;
Intubation, Intratracheal
;
Piperidines
;
Propofol
;
Unconsciousness
7.Establishment of Immotalized Human Gingival Fibroblast Cell Lines.
Jae Bong SONG ; Hyun A KIM ; Ha Na HYUN ; Eun Cheol KIM ; Hyung Keun YOU ; Hyung Shik SHIN
The Journal of the Korean Academy of Periodontology 2002;32(3):603-614
Human gingival fibroblasts have proven to useful as a species specific cell culture system in various system on periodontal disease and regeneration. However, their use is limited, since they are hard to obtain and lifespan is short due to replicative senescence. To overcome these disadvantages, we transfected primary human gingival fibroblasts by the E6 and E7 genes of the Human papilloma virus(HPV) 16. The full length of HPV 16 E6 and E7 was cloned from the pBR322 into BamH1 and Sal I of a pBabe vector including hygromycin B resistance. Before pBabeE6/E7 plasmid transfection, peak 8 GFP including G418 resistance was transfected into primary GF to check the transfection efficency. PBabe E6/E7 plasmid was transfected using Lipofectamine plus following manufacter's instruction into primary normal human gingival fibroblasts in 60mm dishes with FBS free DMEM. After 2 days of transfection, the cells were treated with hygromycin for 2 weeks until the transfected control cells died. The resulting hygromycin resistant colonies were pooled, and clonned, and sucessful transfection was established for immortalized gingival fibroblast cell lines. Immoralized GF cells showed stellate shape, that is similar to that of orange grains, and more rapid growth and higher proliferation than that of primary gingival fibroblasts. This cell lines overcame crisis and could be cultured over 30 subcultured, could be use for three dimentional culture, epithelial-mesenchymal interaction study.
Cell Aging
;
Cell Culture Techniques
;
Cell Line*
;
Edible Grain
;
Citrus sinensis
;
Clone Cells
;
Fibroblasts*
;
Human papillomavirus 16
;
Humans*
;
Hygromycin B
;
Papilloma
;
Periodontal Diseases
;
Plasmids
;
Regeneration
;
Transfection
8.Standard Performance Measurements of GE AdvanceTM Positron Emission Tomography.
Ha Kyu JEONG ; Hee Joung KIM ; Hye Kyung SON ; Jung Kyun BONG ; Hai Jo JUNG ; Tae Joo JEON ; Jae Sam KIM ; Jong Doo LEE ; Hyung Sik YOO
Korean Journal of Nuclear Medicine 2001;35(2):100-112
PURPOSE: The purpose of this study was to establish optimal imaging acquisition conditions for the GE Advance(TM) PET imaging system by performing the acceptance tests designed by National Electrical Manufacturers Association (NEMA) protocol and General Electric Medical Systems (GEMS) test procedures. MATERIALS AND METHODS: Performance tests were carried out with 18FDG radioactivity source and phantoms by using a standard acquisition mode. Transaxial resolution and scatter fraction tests were performed with a line source and axial resolution with a point source, respectively. A cylindrical phantom made of polymethylmethacrylate (PMMA) was used to measure sensitivity, count rate losses and randoms, uniformity correction, and attenuation inserts were added to measure remaining tests. The test results were acquired in a diagnostic acquisition mode and analyzed mainly on high sensitivity mode. RESULTS: Transaxial resolution and axial resolution were measured as average of 4.65 mm and 3.98 mm at 0 cm, and 6.02 mm and 6.71 mm at 20 cm on high sensitivity mode, respectively. Average scatter fraction was 9.87%, and sensitivity was 225.8 kcps/micronCi/cc of trues. Activity at 50% deadtime was 4.6 Ci/cc, and the error of count rate correction at that activity was from 1.49% to 3.83%. Average nonuniformity for total slice was 8.37%. The accuracy of scatter correction was -0.95%. The accuracies of attenuation correction were 5.68% for air, 0.04% for water and -6.51% for polytetrafluoroethylene (PTFE). CONCLUSION: The results satisfied most acceptance criteria, indicating that the GE AdvanceTM PET system can be optimally used for clinical applications.
Electrons*
;
Fluorodeoxyglucose F18
;
Polymethyl Methacrylate
;
Polytetrafluoroethylene
;
Positron-Emission Tomography*
;
Radioactivity
;
Water
9.Surgical Planning for Thoracolumar Spine Fracture.
Bong Sik CHOI ; Ki Uk KIM ; Hyung Dong KIM ; Hyu Jin CHOI ; Sang Soo HA
Journal of Korean Neurosurgical Society 1995;24(4):401-413
Many of the thoracolumbar spine fracture may be managed conservatively by postural reduction. But postural reduction alone cannot treat all the patient with thoracolumbar spine fracture properly. Recently, more patients with thoracolumbar spine fracture are managed surgically with the advance of surgical technique and instrument. Surgery may be performed by either anterior or posterior approach according to many factors. Generally initial management of patient with thoracolumbar spine fracture is conservative and surgery is delayed for spinal fusion, but early surgery with decompression of spinal cord and fusion of the vertebral body seems to be more proper in unstable fracture with compression of spinal cord by bony fragment and incomplete neurological deficit. Authors analyzed 52 cases of thoracolumbar spine fracture and made a proper management plan and proper surgical approach.
Decompression
;
Humans
;
Spinal Cord
;
Spinal Fusion
;
Spine*
10.Primary Pituitary Abscess: Case Report.
Bong Sik CHOI ; Ki Uk KIM ; Dong Gyu KIM ; Sang Soo HA ; Hyung Dong KIM
Journal of Korean Neurosurgical Society 1994;23(10):1210-1214
Pituitary abscess may be caused by direct extension of contiguous infections from purulent sphenoid sinusitis, meningitis or cavernous sinus thrombophlebitis. It also develop after craniotomy or transsphenoidal hypophysectomy. In some cases, it was associated with primary pituitary tumor or cyst which were vulnerable to infection because of impaired circulation, areas of necrosis or local immunological impairment. Primary pituitary abscess may also occur without any preceding infection. Since the clinical features, computed tomographic findings, and laboratory data of primary pituitary abscess were similar to pituitary tumor, preoperative diagnosis of pituitary abscess is difficult. Inhomogenous enhancement with central low density and focal bulge at the level of diaphragm was reported to be compatible with computed tomographic findings of pituitary abscess.
Abscess*
;
Cavernous Sinus Thrombosis
;
Craniotomy
;
Diagnosis
;
Diaphragm
;
Hypophysectomy
;
Meningitis
;
Necrosis
;
Pituitary Neoplasms
;
Sphenoid Sinus
;
Sphenoid Sinusitis