1.Dimensional stability and wettability of rubber impression materials.
Choong Hee KANG ; Mong Sook VANG
The Journal of Korean Academy of Prosthodontics 1992;30(2):233-245
No abstract available.
Rubber*
;
Wettability*
2.Oncogenous Rickets: Report of Two Cases
Duk Yong LEE ; Hee Joong KANG ; Choong Hee WON
The Journal of the Korean Orthopaedic Association 1986;21(3):507-514
Oncogenous or tumor-induced rickets is recognized as Vitamin D-resistant hypophosphatemic rickets that heals after excision of a coexisting tumor in either bone or soft tissue. Its pathogenesis is not clarified, but it has been suggested that the tumor elaborates a homoral substance inhibiting tubular reabsorption of phosphate or that the tumor inhibits the synthetic process of 1, 25-dihydroxcholecalciferol. We present two cases of vitamin D-resistant rickets, one associated with intrasseous well-differentiated osteosarcoma in the pelvis and the other associated with fibrosarcoma of distal femur. The case with low grade osteosarcoma showed immediate improvement of rickets after excision of the tumor, but the case with fibrosarcoma showed no improvement after amputation and was fatally terminated 5 months later due to lung metastasis.
Amputation
;
Femur
;
Fibrosarcoma
;
Lung
;
Neoplasm Metastasis
;
Osteosarcoma
;
Pelvis
;
Rickets
;
Rickets, Hypophosphatemic
;
Vitamins
3.The Result of Sugioka's Transtrochanteric Rotational Osteotomy
Choong Hee WON ; Young Min KIM ; Shin Young KANG
The Journal of the Korean Orthopaedic Association 1987;22(3):653-666
Avascular necrosis of the femoral head is generally localized in the anterosuperior aspect of the head. The posterior part of the head often retains a normal, smooth contour containing healthy cartilage even in much advanced cases. Because of this anatomical localization of the lesion, Y. Sugioka has devised a transtrochanteric rotational osteotomy in young and middle-aged person, which reduces the weight-bearing force on the necrotic area, and transfers shearing forces to the healthy posterior cartilage of the femoral head to prevent progressive collapse of the articular surface and improve alignment when articular collapse followed femoral head subluxiation. The authors reviewed 13 cases of Sugioka operation, performed at the Department of Orthopedic Surgery, Seoul National University Hospital during the period from December 1983 to Feburary 1986 and the following results were obtained. 1. There were 11 males and 1 female. The average age of the 13 cases was 33.3 years. 2. In all the cases of Grade I and Grade II hips, there was not progressiveness of necroticarea of femur heads. 3. By U.C.L.A. hip rating system, preoperative mean scores of pain, walking ability, function and activity were 2.5, 5.7, 4.8 and 4.3, respectively, while postoperative scores of these were increased to 7.7, 9.5, 8.4 and 7.8, respectively. 4. Average ranges of motion of hip joint were increased more postoperatively than preoperatively.
Cartilage
;
Female
;
Femur Head
;
Head
;
Hip
;
Hip Joint
;
Humans
;
Male
;
Necrosis
;
Orthopedics
;
Osteotomy
;
Seoul
;
Walking
;
Weight-Bearing
4.Transvaginal sonographic assessment of normal gestational sac growth.
Yong Ho RHO ; Hee Dong YANG ; Choong Sik HA ; Kab Joo HAN ; Kang Kook LEE
Korean Journal of Obstetrics and Gynecology 1993;36(7):3034-3039
No abstract available.
Gestational Sac*
;
Ultrasonography*
5.Anesthetic Management of Pregnant Patients .
Soon II KIM ; Choong Hwan KIM ; Kang Hee CHO
Korean Journal of Anesthesiology 1978;11(4):309-316
Surgical intervention during the pregnancy is not rare and the impact of anesthesia and surgery during the pregnancy is doublefold, because the mother and the fetus in uterus are concerned. The anesthesiologist must know the progressive' maternal changes during the pregnancy and drug action on the fetus. The authors have experienced 50 cases of pregnant women undergoing various kinds of operation and have analyzed those cases according to the type of disease, the duration of gestation, physical status, premedication, anesthetic technics and agent used, and the outcome of the fetus and the patient during the period between March 1972 to August 1978 The results were as follows: 1) The most of patient, 32 cases were operated for the obstetric and gynecological :reason s. 2) 27 cases (54%) had undergone the operation during the second trimester. 3) Physical status class 2 including 28 cases (56%) was the most commonly found physical status of the patients. 4) Halothane was the main anesthetic agent for 39 cases (78%) and there were 3 cases of spinal anesthesia. 5) We could follow 27 cases among 50 cases about the outcome of the fetus. 17 spontaneous vaginal delivery, 8 Cesarean sections, 1 fetal death in uterus and 1 wanted D&C. 6) Among 5 premature deliveries, 2 premature infants died during the hospitalization. 7) The only maternal motality was the case of intrahepatic stone who expired 11 days postoperatively and delivered a 1,300 gm premature 7 days postoperatively.
Anesthesia
;
Anesthesia, Spinal
;
Cesarean Section
;
Dilatation and Curettage
;
Female
;
Fetal Death
;
Fetus
;
Halothane
;
Hospitalization
;
Humans
;
Infant, Newborn
;
Infant, Premature
;
Mothers
;
Pregnancy
;
Pregnancy Trimester, Second
;
Pregnant Women
;
Premedication
;
Uterus
6.A Case of Congenital Nephrotic Syndrome.
Choong Sun KANG ; Chang Hee HWANG ; PyungKil KIM ; Hyeon Joo JEONG ; In Joon CHOI ; Jung Hye CHOI
Journal of the Korean Pediatric Society 1988;31(5):627-634
No abstract available.
Nephrotic Syndrome*
7.Differentiation of proteinuria using phast system(R) in patients with hemorrhagic fever with renal syndrome.
Jeong Soo SONG ; Choong Hyun KIM ; Eung Taek KANG ; Suk Hee YU ; Byung Jik LEE
Korean Journal of Nephrology 1992;11(4):351-358
No abstract available.
Hemorrhagic Fever with Renal Syndrome*
;
Humans
;
Proteinuria*
8.Clinical analysis of Peripheral Nerve Injury
Moon Sang CHUNG ; Choong Hee WON ; Kang Sup YOON ; Bong Goo YEO ; Sung Soo CHUNG
The Journal of the Korean Orthopaedic Association 1990;25(2):347-352
Peripheral nerve injury occurs mostly in company with tendon and muscle injuries, fractures, or dislocations. Because of the disabilities and socioeconomic loss caused by such injuries, much attention must be paid to the initial treatment, and later to the reconstruction and rehabilitation. At department of Orthopedic Surgery, Seoul National University Hospital, 336 patients of nerve lesion were treated from Jan, 1980 to Dec, 1988. Among them 128 patients were nerve compression syndrome (carpal tunnel 52 patients, cubital tunnel 40 patients, thoracic outlet 16 patients, others 20 patients), and 50 patients were brachial plexus injury, and 168 cases were peripheral nerve injury. 50 patients of the peripheral nerve injury were treated with reconstruction and 118 patients were treatred with neurorrhaphy, nerve graft, and neurolysis. Of the 118 patients, 94 patients were followed up for more than one year, and the results of neurorrhaphy, nerve graft and neurolysis were analyzed. In 46 patients (73.0%) of the patients treated with neurorrhaphy, 7 patients (58.3%) with nerve graft, and 15 patients (78.9%) with neurolysis, good or excellent results were obtained.
Brachial Plexus
;
Dislocations
;
Humans
;
Nerve Compression Syndromes
;
Orthopedics
;
Peripheral Nerve Injuries
;
Peripheral Nerves
;
Rehabilitation
;
Seoul
;
Tendons
;
Transplants
9.Total Knee Replacement Arthroplasty in Rheumatoid Arthritis
Sang Cheol SEONG ; Choong Hee WON ; Kang Sup YOON ; Bong Goo YEO ; Dae Geun JEON
The Journal of the Korean Orthopaedic Association 1990;25(5):1430-1437
Rheumatoid arthritis is a chronic inflammatory systemic disease of young or middle aged adults, characterized by destructive and proliferative changes in the synovial membrane, periarticular structures, skeletal muscle and perineural sheath. Eventually, the joints are destroyed, ankylosed and deformed. Therfore, the aim of treatment is to keep the inflammatory process at a minimum, thereby preserving the joint motion, maintaining the health of muscle supplying motor power about the joint and preventing secondary joint stiffness and deformity. Surgical treatment in rheumatoid arthritis has progressed and there have been advances in the relief of pain and increase in the range of motion. Among them the results of total knee arthroplasty (TKA) have improved steadily during the past decade due to refinements in design, fixation, and surgical technique. At orthopedic department of seoul national university hospital, we performed 31 total knee replacement in 18 patients who had suffered from rheumatoid arthritis during the period from Aug. 1982 to Dec. 1988. Following results were obtained. 1. Knee score increased from 37.8 to 76.9. 2. Tibio-femoral angle was corrected from 0.9° valgus to 5.3° valgus. 3. Conplications were peroneal nerve palsy in 3 knees, instability in 1 knee, tuberculous arthritis in 1 knee. 4. In 25 out of 31 knees, good functional results were obtained.
Adult
;
Arthritis
;
Arthritis, Rheumatoid
;
Arthroplasty
;
Arthroplasty, Replacement, Knee
;
Congenital Abnormalities
;
Humans
;
Joints
;
Knee
;
Middle Aged
;
Muscle, Skeletal
;
Orthopedics
;
Paralysis
;
Peroneal Nerve
;
Range of Motion, Articular
;
Seoul
;
Synovial Membrane
10.Patch Testing in Nummular Eczema: Comparison of Patch Test Resultsbetween Nummular Eczema and Atopic Dermatitis.
Ik Jun KANG ; Min Kyung SHIN ; Choong Rim HAW
Korean Journal of Dermatology 2007;45(9):871-876
BACKGROUND: Nummular eczema, which is also known as discoid eczema, is defined by its clinical appearance as coin-shaped, circular, or oval lesions with a definite border. The etiology of nummular eczema is obscure, and many causative factors have been proposed, but there are only a few studies of the relevance of contact allergy in nummular eczema in Korea. OBJECTIVE: The purpose of this study was to investigate the role of allergic contact dermatitis in nummular eczema patients compared with atopic dermatitis. METHODS: A total of 86 patients were enrolled in this study. Patients combined with atopic dermatitis and nummular eczema were classed as atopic dermatitis. The group with atopic dermatitis was 32 patients. The group with nummular eczema was 54 patients. We performed patch tests on both groups, and evaluated their clinical features and the results of the patch testing. RESULTS: The patients comprised of 49 males and 37 females. The mean age of group with atopic dermatitis was 21.3 years, and the mean age of group with nummular eczema was 44.2 years. The distribution by age was most prevalent at 10~19 years for the group with atopic dermatitis group and 40~49 years for the group with nummular eczema. The predominant sites of the lesions were the arms (21.0%), trunk (21.0%), legs (16.3%), widespread on the body (15.1%), hands (13.9%), feet (7.0%), face and neck (5.8%). Sixty seven (77.9%) out of 86 patients showed a positive reaction to one or more allergens. The highest sensitization rates were found with: nickel sulphate (45.3%), cobalt chloride (29.1%), potassium dichromate (20.9%), thimerosal (17.4%), neomycin sulphate (15.1%), thiuram mix (14.0%), formaldehyde (14.0%), colophony (12.8%), 4-phenylenediamine mix (11.6%), fragrance mix (10.5%). Comparing the atopic dermatitis and nummular eczema groups, there was no significant difference in the positivity for patch test allergens and frequent antigens. Comparing with clinical manifestation between the group with positive reaction and the group with negative reaction to the patch test in nummular eczema and atopic dermatitis, in the group with positive reaction of patch test, the severity of disease increased. CONCLUSION: This study shows that contact sensitivity is relatively common both with nummular eczema and atopic dermatitis. But, when there is no difference in the positive rate of antigens in patch test, both groups show high positive rate of metal antigens. Also nummular eczema patients with consistent and recurrent symptoms, the possibility of allergic contact dermatitis should be taken into consideration and a patch test must be performed.
Allergens
;
Arm
;
Cobalt
;
Dermatitis, Allergic Contact
;
Dermatitis, Atopic*
;
Dermatitis, Contact
;
Eczema*
;
Female
;
Foot
;
Formaldehyde
;
Hand
;
Humans
;
Hypersensitivity
;
Korea
;
Leg
;
Male
;
Neck
;
Neomycin
;
Nickel
;
Patch Tests*
;
Potassium Dichromate
;
Thimerosal
;
Thiram