1.Experimental Inoculation of Staphylococcus Aureus into Young Rabbits
The Journal of the Korean Orthopaedic Association 1970;5(2):89-95
Since almost all patients suffering from acute hematogenous osteomelitis, due to Staph. aureus, are under 20 year old, it may be assumed that the host-parasite relationships, between the young and actively growing bodies and the organisms, might be somewhat different from the ones prevailed in the adult bodies. And it is also known that the administration of various hormones may produce significant influences upon the susceptibity and resistance of host. It was thought worthwile to study the host reactions to the introduction of organisms and the effects of cortisone or prehormone administration to the infected animals. Thus, ca. 5×10⁷ viable cells of Staph. aureus were inoculated i.v. into young rabbits, weighing 1–1.5 kg., of around 2 months old. The number of viable units of Staph. aureus were followed in the circulating blood and urine of the inoculated animals with or without treatment of cortisone or prehormone. The results of observations might be summerized as follows: 1. The organisms were removed rapidly from the circulating blood of infected rabbits without treatment. The number of viable units increased more or Iess slowly, peak being three to eight days after inoculation, in the urine of infected rabbits without treatment. 3. In the of infected rabbits with daily administration of cortisone, small number of organisms could be cultured throughout the 17 days of observation. 4. The number of viable units in the urine of infected rabbits with daily adminstration of cortisone sho wed significant increase upon the onset of cortisone administration and then decreased slowly. 5. Prehormone administration appeared to produced no significant influence on the number or viable stapylococci in the blood and urine of infected rabbits.
Adult
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Animals
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Cortisone
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Host-Parasite Interactions
;
Humans
;
Rabbits
;
Staphylococcus aureus
;
Staphylococcus
2.Lumbar Epidural Lipomatosis: Three Cases Report.
Won Sik CHOY ; Hwan Jung KIM ; Kyou Hyeun KIM ; Sang Suk ONG ; Jong Hyeun PARK
Journal of Korean Society of Spine Surgery 1998;5(1):136-142
No abstract available.
Lipomatosis*
3.A case of paraplegia due to hyperextension injury in ankylosing spondylitis.
Won Sik CHOY ; Hwan Jung KIM ; Kwang Won LEE ; Byung Sun BAIK
The Journal of the Korean Orthopaedic Association 1992;27(2):602-605
No abstract available.
Paraplegia*
;
Spondylitis, Ankylosing*
4.The treatment of humeral shaft fracture by Kuntscher intramedullary nailing.
Won Sik CHOY ; Hwan Jung KIM ; Kwang Won LEE ; Keun Hong PARK
The Journal of the Korean Orthopaedic Association 1992;27(1):195-202
No abstract available.
Fracture Fixation, Intramedullary*
5.Kallmann's syndrome associated with slipped capital femoralepiphysis: one case report.
Won Sik CHOY ; Hwan Jung KIM ; Kwang Woo LEE ; Keun Hong PARK
The Journal of the Korean Orthopaedic Association 1991;26(6):1937-1943
No abstract available.
Kallmann Syndrome*
6.A Case of Chemical Pneumonitis After Ingestion of Hydrocarbon.
Suk Hwan KIM ; Yangjin JEGAL ; Nari CHOY ; Yangho KIM
Korean Journal of Occupational and Environmental Medicine 2009;21(4):406-411
BACKGROUND: Hydrocarbon is used frequently in the home in places such as the kitchen, garage, and basement. Accidental ingestion of hydrocarbons occurs generally in infants and children in the home. In cases of accidental ingestion, the amount is usually too small to cause medical problems, but can bring about diseases such as chemical pneumonitis. CASE REPORT: After ingesting organic solvent mistaken for mineral water, a 53-year-old male complained of cough, fever, and pain in the right upper abdomen, back, and right chest. Simple chest x-ray revealed focal chemical pneumonitis mainly involving the right middle lobe. The resulting lung abscess did not resolve until after treatment with drainage accompanied with antibiotics therapy. The ingested solution was analyzed and found to be a C11~C13 hydrocarbon mixture which has low viscosity. CONCLUSION: Chemical pneumonitis occurred after ingestion of hydrocarbon solution, and there is evidence of aspiratory mechanism.
Abdomen
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Anti-Bacterial Agents
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Child
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Cough
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Drainage
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Eating
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Fever
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Humans
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Hydrocarbons
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Infant
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Lung Abscess
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Male
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Middle Aged
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Mineral Waters
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Pneumonia
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Thorax
7.Radiological and Clinical Analysis of Degenerative Lumbar Retrolisthesis: Comparative Study of Degenerative Spondylolisthesis.
Whoan Jeang KIM ; Jong Won KANG ; Jae Guk PARK ; Kun Young PARK ; Hwan Il SUNG ; Won Sik CHOY
Journal of Korean Society of Spine Surgery 2005;12(4):338-343
STUDY DESIGN: This is a retrospective study. OBJECTIVES: We wanted to analyze the radiological features of degenerative lumbar spondylolisthesis and retrolisthesis, and we wanted to verify what radiological factors are related to the development of the retrolisthesis. We also wanted to determine these radiological factors' clinical significance. SUMMARY OF THE LITERATURE REVIEW: There is little information about the pathological mechanism and the clinical and radiological aspects of degenerative lumbar retrolisthsis. MATERIALS & METHODS: Sixty patients were reviewed and divided into three groups. The degenerative lumbar retrolisthesis patients were in group A. The degenerative lumbar spondylolisthesis patients were in group B. Group C patients had no vertebral shift in any direction. The factors we measured were the facet joint angle, the disc height of L3-4, L4-5 and L5-S1, and the lordosis of the lumbar spine. The evaluation of the clinical results was then quantified. RESULTS: The facet joint angle showed no statistical significance between the two groups. The disc height of group A at L4-5 and L5-S1 was more decreased in group A than in group B (p<0.05). Lumbar lordosis was decreased significantly in group A (p<0.05). The preoperative pain was improved at the final follow up, but preoperative pain was significantly higher in group A than in group B (p<0.05). The clinical results were improved in each group, but there was no statistically significant difference between the two groups. CONCLUSIONS: The disc height and lumbar lordosis were considerably reduced in the patients with retrolisthesis, especially compared to those patients with spondylolisthesis. Preoperative pain was higher for the retrolisthesis patients than for the spondylolithesis patients, but there was no significant difference.
Animals
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Follow-Up Studies
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Humans
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Lordosis
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Retrospective Studies
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Spine
;
Spondylolisthesis*
;
Zygapophyseal Joint
8.Effect of Posterior Femoral Clearance on Knee Flexion in Total Knee Arthroplasty.
Won Sik CHOY ; Hang Ho LEE ; Young Keun LEE ; Kap Jung KIM ; Hwan Il SUNG
The Journal of the Korean Orthopaedic Association 2006;41(6):968-973
PURPOSE: To analyze the effect of clearing the protruding posterior femoral condyle from the femoral component (PFC: Posterior femoral clearance) on knee flexion in patients who underwent LCS(R) rotating platform TKA. MATERIALS AND METHODS: Twelve patients were male and one hundred seventy-eight patients were female. The patients were divided into the following two groups: Group A (62 patients 84 knees), TKA without PFC; and Group B (128 patients 182 knees), TKA with PFC. The clinical and radiology follow-up were carried out using the HSS score and tibiofemoral angle, and the possibility of squatting was evaluated in each group, respectively. RESULTS: The mean flexion contracture improved 10.8degrees in group A, and 10.3degrees in group B. The mean further flexion improved 13degrees in group A, and 24degrees in group B. The improvement of knee flexion with PFC showed statistical significance. The mean HSS knee scores improved 30.5 points in group A, and 36.3 points in group B. The improvement in the HSS knee score with PFC showed statistical significance. Squatting was possible 50.0% of group A, and 67.4% of group B. CONCLUSION: PFC is effective in increasing the level of knee flexion and improving the HSS score. PFC can be a good solution for high demand patients, particularly those from Asian countries.
Arthroplasty*
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Asian Continental Ancestry Group
;
Contracture
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Female
;
Follow-Up Studies
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Humans
;
Knee Joint
;
Knee*
;
Male
9.Short-term Results of Cementless Total Hip Arthroplasty Using Ceramic on Ceramic Articulation.
Won Sik CHOY ; Jae Hoon AHN ; Hang Ho LEE ; Hwan Il SUNG ; Kyu Hyun NA
The Journal of the Korean Orthopaedic Association 2005;40(7):916-922
PURPOSE: The authors evaluated the clinical and radiological short-term results of ceramic on ceramic articulation of cementless total hip arthroplasty. MATERIALS AND METHODS: One hundred fourteen patients, with a total of 130 hips were followed for more than 2 years after cementless total hip arthroplasty using ceramic on ceramic articulation (Lima. SPH-C2). The mean age was 58 years, and the mean follow-up period was 3.0 years. The Harris hip score and postoperative hip pain were analyzed clinically. The radiological results were assessed using various radiological indices such as subsidence, cup inclination angle, radiolucent line, endosteal new bone formation and osteolysis. RESULTS: At last follow-up, the average Harris hip score improved from 57.5 points preoperatively to 93 points postoperatively. There were 4 cases (3.0%) of significant hip pain. Radiologically, all stems demonstrated stable fixation. The inclination of the acetabular cup was significantly changed in 4 cases (3%), and was diagnosed as loosened. A radiolucent line was observed around the stem in 5 cases (3.8%), and around the cup in 7 cases (5.4%). Endosteal new bone formation was observed around the stem in 47 cases (36.2%), and around the cup in 52 cases (40.0%). Osteolysis was not observed around the stem and the cup. CONCLUSION: With a minimum follow-up of 2 years, ceramic on ceramic articulation hip arthroplasty demonstrated excellent results on the stem side. However, 4 cases (3.0%) of cup loosening suggest that there is a fixation problem due to the design of the cup.
Acetabulum
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Arthroplasty
;
Arthroplasty, Replacement, Hip*
;
Ceramics*
;
Follow-Up Studies
;
Hip
;
Humans
;
Osteogenesis
;
Osteolysis
10.Radiologic Analysis of Postoperative Sagittal Plane Correction in Lumbar Degenerative Kyphosis (LDK).
Whoan Jeang KIM ; Jong Won KANG ; Dae Suk YANG ; Sung Il KANG ; Kun Young PARK ; Jae Guk PARK ; Hwan Il SUNG ; Won Sik CHOY
Journal of Korean Society of Spine Surgery 2009;16(3):177-185
STUDY DESIGN: This is a retrospective study OBJECTIVES: We radiologically analyzed the correction of the sagittal imbalance and the proximal fusion level to prevent correction loss and the usefulness of iliac screws in LDK. SUMMARY OF THE LITERATURE REVIEW: Complications can be encountered during fixation and fusion as most of the LDK patients are aged, and the osteoporosis that causes fixation loss is known to affect the loss of correction. MATERIALS AND METHODS: We analyzed the cause of correction loss among 35 patients who underwent surgery and who were followed up for at least 1 year. All the patients had performed gait analysis before operation. The operative techniques were pedicle subtraction osteotomy and fixation to S1. For analyzing causes of correction loss, we analyzed the degrees of lumbar lordosis for the sagittal correction and the degrees of the preoperative thoracolumbar kyphosis for the proximal fusion range. For analyzing the usefulness of iliac screws, the subjects were divided into two groups: 1) the -iliac screw (23cases) group for the patients who were fixed without iliac screws and 2) the +iliac screw (12cases) group for the patients who were fixed with iliac screws. RESULTS: There were no patients who had marked anterior pelvic tilt. It is important to correct the lumbar lordosis over 20degrees compared with the preoperative thoracic kyphosis. There are 10 cases of preoperative thoracolumbar kyphosis > or = 10degrees and 25 cases of preoperative thoracolumbar kyphosis < 10degrees of the total 35 cases. Among 10 cases of preoperative thoracolumbar kyphosis > or = 10degrees, 4 cases that were fixed to T10 had no sagittal correction loss, and 2 of the 6 cases that were fixed to T11 or T12 had sagittal correction loss. For the 25 cases of preoperative thoracolumbar kyphosis < 10degrees, 5 cases that were fixed to T10 had no sagittal correction loss and 1 of the 20 cases that were fixed to T11 or T12 had sagittal correction loss (p<0.05). 6 cases (26%) in the -iliac screw group (23 cases total) and 1 case (8%) in the +iliac screw (12 cases total) showed sagittal correction loss (p<0.05). CONCLUSIONS: It is important to make the postoperative lumbar lordosis over 20degrees compared with the preoperative thoracic kyphosis for correcting sagittal imbalance, to decide on the proximal fixation level according to the preoperative thoracolumbar kyphosis and to fix with iliac screws.
Aged
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Animals
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Gait
;
Humans
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Kyphosis
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Lordosis
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Osteoporosis
;
Osteotomy
;
Retrospective Studies