1.The Measurement of Ligament Strength in Non - operatively Treated Medial Collateral Ligament Injuries of Rabbits - Comparison of Immobilization and Motion Group -.
Young Bok JUNG ; Cheol Ho KIM ; Ho Joong JUNG
Journal of the Korean Knee Society 1997;9(1):7-12
In order to assess the difference of healing of the medial collateral ligament (MCL) of the knee according to the treatment methods, in vivo animal experiment using a rabbit model was perfoimed. Thirty six MCLs in eighteen rabbits were surgically transected at the mid-portion and treatm nt was done with two different methods, e.g. immobilization wiih plaster cast in right knees (Group I ), and non-immohilization in left knees (Group 2 ). Five rabhits were used as normal controis. To evaluate the biomechanical property of the femur-MCL-tibia complex (FMTC) in time progression, tensile stress tests using material testing machine (Model 8511, Instron company, 1993) were done at 6, 10, l2 weeks postoperatively and the results were as follows. 1. The ultimate load and stiffness (structural property) of the FMTC increased with time in both groups, but group ][ showed significantly higher values than group I . 2. The material property of the MCL checked by stress-strain curve showed higher Young s modulus in group ][ than in group ] . As a results, joint motion seems to improve the biomechanical propeity of the healed MCL.
Animal Experimentation
;
Casts, Surgical
;
Collateral Ligaments*
;
Exercise Test
;
Immobilization*
;
Joints
;
Knee
;
Ligaments*
;
Rabbits*
2.STRESS ANALYSIS AT SUPPORTING TISSUE OF ABUTMENT TEETH AND RESIDUAL RIDGE ACCORDING TO DENTURE DESIGN WITH REMAINING UNILATERAL POSTERIOR TEETH.
Kwang Ho AHN ; Young Wan JUNG ; Tai Ho JIN
The Journal of Korean Academy of Prosthodontics 1999;37(2):185-199
This study was performed to investigate the distribution and magnitude of stress at supporting tissue of abutment teeth and residual ridge tissue with remaining unilateral posterior teeth. Four types of removable partial dentures that included clasp retained removable partial denture, attachment retained removable partial denture, telescopic removable partial denture, and swing-lock partial denture were designed, and strain gauge was used for stress analysis. Each prosthesis was subjected to simulated vertical and oblique load. The following conclusions were drawn from this study. 1. The clasp retained removable partial denture generally distributed simulated vertical force more evenly to the supporting structure. 2. The stress at buccal side of 1st premolar was the lowest in swing-lock partial denture and that was highest in attchment retained removable partial denture. The stress at lingual side of 1st premolar was the lowest in telescopic partial denture. 3. In clasp retained removable partial denture, stress was lower at load site and ridge crest at midline, but it was higher at lst premolar area on vertical load. 4. In attachment removable partial denture, stresses at buccal side of 1st premolar, lingual side of 1st premolar on vertical load, and ridge crest at midline on oblique load were higher. 5. In telescopic removable partial denture, stress at lingual side of 1st premolar was the least in all removable partial dentures, but the stress at load site was higher. 6. In swing-lock removable partial denture, stress at buccal side of 1st premolar was the lowest, and stresses at load site and distal end of residual ridge crest were higher.
Bicuspid
;
Denture Design*
;
Denture, Partial
;
Denture, Partial, Removable
;
Dentures*
;
Prostheses and Implants
;
Tooth*
3.The treatment of congenital cutis aplasia.
Young Ha KIM ; Gyu Ho CHA ; Jae Ho JUNG ; Kyung Ho LEE ; Jung Hyun SEUL
Yeungnam University Journal of Medicine 1992;9(2):422-426
One case of congenital cutis aplasia is presented. The defect involved includes full-thickness skin defect of scalp and cranium. The patient was treated with debridement of dirty necrosed crust which covered exposed dura mater and with double opposing rotation flap including pericranium for bone regeneration. The donor site was covered with skin graft from right thigh. During operation, the superficial temporal artery was found to be short and weak. And after operation, the margin of flap were congested and finally necrotized. The necrotic wound was treated with conservative management. The vascular impairment is thought to be main course of congenital cutis aplasia. So we conclude that the treatment of choice is conservative management or careful flap surgery for coverage of defect area.
Bone Regeneration
;
Debridement
;
Dura Mater
;
Estrogens, Conjugated (USP)
;
Humans
;
Scalp
;
Skin
;
Skull
;
Temporal Arteries
;
Thigh
;
Tissue Donors
;
Transplants
;
Wounds and Injuries
4.THE SHEAR BOND STRENGTH OF RESIN TEETH TO THE DENTURE BASE RESIN.
Young Kuk SONG ; Young Wan JUNG ; Tai Ho JIN
The Journal of Korean Academy of Prosthodontics 1999;37(2):235-241
The bond failure of resin teeth to denture base resin is one of the failure in prosthodontic treatment. The purpose of this study was to evaluate the bond strength of artificial resin teeth to the denture base resins. Specimens were made with heat curing acrylic resins (Vertex Rs, Lucitone 199) and artificial resin teeth (Tiger, Trubyte biotone, Endura, Orthosit, Trubyte bioform IPN) and the bond strength were measured with testing machine (Zwick, Germany) and the mode of bond failure were observed. The results were as follows; 1. The bond strength of Vertex Rs to artificial resin teeth was the highest in Trubyte biotone, and It was the lowest in Tiger and Trubyte bioform IPN 2. The bond strength of Lucitone 199 to artificial resin teeth were higher in Orthosit and Trubyte bioform IPN than in Tiger and Trubyte biotone. 3. The bond strength of Trubyte biotone to Vertex Rs was higher than to Lucitone 199 and that of the Trubyte bioform IPN to Lucitone 199 was higher than to Vertex Rs. 4. Nearly all bond failures of specimens occured cohesively within the resin teeth.
Acrylic Resins
;
Denture Bases*
;
Dentures*
;
Hot Temperature
;
Prosthodontics
;
Tigers
;
Tooth*
5.Two Cases with Prolonged TSH Elevation in Congenital Hypothyroidism.
Jung Ho SEO ; Ho Young YOON ; So Mi PARK ; Hae Jung SHIN ; Duk Hee KIM
Journal of Korean Society of Pediatric Endocrinology 1999;4(1):109-114
It has been proven that the newborn screening programs for congenital hypothyroidism are very important for its early detection and the early treatment of congenital It has been proven that the newborn screening programs for congenital hypothyroidism are very important for its early detection and the early treatment of congenital hypothyroidism can ameliorate and possibly reverse its consequences. Treatment with L-thyroxine is started in case of suspicious hypothyroidism at the first visit. Serum concentration of total and free thyroxine become normal within 1week after start of therapy but TSH values become normal from 2 months to 6 months after L-thyroxine therapy. The possible explanations for prolonged TSH elevation in congenital hypothyroidism are poor compliance for therapy, an inadequate dose of L-thyroxine, elevated threshold for thyrotropin suppression and two novel mutations in the thyrotropin (TSH) receptor gene in a child with resistance to TSH. Authors have experienced two cases of prolonged TSH elevation with normal T3 and T4 levels till 18months and 27 months of age after optimal L-thyroxine therapy and literature were reviewed.
Child
;
Compliance
;
Congenital Hypothyroidism*
;
Humans
;
Hypothyroidism
;
Infant, Newborn
;
Mass Screening
;
Thyrotropin
;
Thyroxine
6.The Effect of Growth Hormone on Carbohydrate Metabolism in Turner Syndrome.
Hye Jung SHIN ; Jung Ho SEO ; Ho Young YOON ; Duk Hee KIM
Journal of Korean Society of Pediatric Endocrinology 1999;4(1):71-77
PURPOSE:The incidence of glucose intolerance is increased in patients with Turner syndrome. Both noninsulin dependent diabetes mellitus and insulin dependent diabetes mellitus are increased. The purpose of this study was to investigate the impaired rate of carbohydrate metabolism in Turner syndrome after growth hormone treatment. METHODS:We investigated the incidence of carbohydrate intolerance and diabetes mellitus in 94 patients with Turner syndrome with NDDG and WHO criteria. The oral glucose tolerance test was performed in 78 patients. In 12 patients treated with growth hormone, the glucose tolerance test was performed before and after treatment. The insulin tolerance test was done in 20 patients. RESULTS:Only one patient had random plasma glucose level of more than 200 mg/dl. In results of the glucose tolerance test(n=78), 2 patients had glucose tolerance by NDDG criteria and 7 patients had it by WHO criteria. There was no change in glucose tolerance test results during growth hormone treatment. According to the results of the insulin tolerance test, we couldn't find any difference in insulin resistance between the growth hormone treatment group and the other treatments(oxandrolone, estrogen) group. CONCLUSION: The impaired rate of carbohydrate metabolism in Turner syndrome was much lower than in other reports. We observed that the impaired rate of carbohydrate metabolism did not increase after growth hormone treatment. However, the long-term effects in patients treated with growth hormone will be elucidated.
Blood Glucose
;
Carbohydrate Metabolism*
;
Diabetes Mellitus
;
Glucose
;
Glucose Intolerance
;
Glucose Tolerance Test
;
Growth Hormone*
;
Humans
;
Incidence
;
Insulin
;
Insulin Resistance
;
Turner Syndrome*
7.Histological and Histochemical Study of the Acetabular Articular Cartilage in Avascular Necrosis of Femoral Head
Chang Ju LEE ; Soo Jung CHOI ; Won Ho CHO ; Ho Guen CHANG ; Young Ho LEE
The Journal of the Korean Orthopaedic Association 1995;30(6):1579-1588
We studied the degenerative changes of acetabulum, examining the acetabular articular cartilage at weight bearing dome area from the hips of 25 avascular necrosis of femoral head cases. Histological- histochemical studies demonstrated 4 mild, 19 moderate and 2 severe grade of degenerative arthritic change. This has confirm that even in early stage of avascular necrosis of femoral head, there are degenerative arthritis in acetabular cartilage. This may influence the prognosis of bipolar hemiarthro- plasty in avascular necrosis of femoral head patient.
Acetabulum
;
Cartilage
;
Cartilage, Articular
;
Head
;
Hip
;
Humans
;
Necrosis
;
Osteoarthritis
;
Prognosis
;
Weight-Bearing
8.Congenital Left Ventricular Diverticulum.
Jong Young KIM ; Jung Ho KIM ; Jin Gon JUN
Yeungnam University Journal of Medicine 1990;7(2):181-187
Congenital diverticulosis of the left ventricle is an extremely are rare maldevelopment. We report a 9 year old girl with probable isolated left ventricular diverticulum in whom the diagnosis was made by cross sectional echocardiography and by angiography.
Angiography
;
Diagnosis
;
Diverticulum*
;
Echocardiography
;
Female
;
Heart Ventricles
;
Humans
9.A Case of Generalized Fixed Drug Eruption due to Mefenamic Acid.
Young Sook KIM ; Ho Jung KANG ; Jeong Hee HAHM
Annals of Dermatology 1996;8(3):211-214
A 45-year-old woman presented with a generalized fixed drug eruption due to mefenamic acid, characterized by recurring erythematous patches with central bullae on the same sites of the whole body and leaving hyperpigmentation after each attack. Patch testing of a quiescent lesion with 50% mefenamic acid in vaselin revealed an eczematous reaction after 48 hours. The disease course was mild compared to the severe clinical manifestation. We here-in report a case of generalized fixed drug eruption due to mefenamic acid which is considered a rare occurrence.
Drug Eruptions*
;
Female
;
Humans
;
Hyperpigmentation
;
Mefenamic Acid*
;
Middle Aged
;
Patch Tests
10.A simple reconstructive method in vertical deficiency of the lower eyelid with the chondrocutaneous composite graft.
Byeong Yun PARK ; In Seon JUNG ; Young Ho LEE
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1992;19(6):993-1002
No abstract available.
Eyelids*
;
Transplants*