2.An Experimental Study for The Biomechanical Properties and Histologic Reactions of Carbon Fiber Reinforced Epoxies(CFRE) * Implant
Seung Ho YUNE ; Hak Young KIM ; Sang Deug LIM
The Journal of the Korean Orthopaedic Association 1989;24(4):1251-1259
Histologic reactions of bone and soft tissue to CFRE were explored, and biomechanical properties of both CFRE plate and stainless steel plate were tested and compared. Six achilles tendons of albino rabbits were replaced with CFRE implant after artificial rupture and serial histologic examination of neotendon and histologic response in vivo were done during 8 weeks. Proximal tibia of twelve albino rabbit was selected, subjected the tibia a single osteotomy and internal fixation with CFRE plate in six cases, and stainless steel plate in the others. And then, consequent radiographic and histologic change was observed during 8 weeks. Objectives in this paper is to provide basic data of CFRE in its biomechanical and biologic response in vivo. The results were as follows :1. Foreign body reaction and fibroblast were decreased at 7-8 weeks after operation. Early formation of collagen, which is similar to that found in the normal side, was shown. So, CFRE seems to be ideal material in the aspect of tissue tolerance among biocomaptibility factors. 2. In biomechanical test, CFRE plate is lower than stainless steel plate in flexural strength and flexural modulus. This means that CFRE plate is semirigid in nature. 3. While external callus formation is marked after fixation of CFRE, internal callus for mation is marked after fixation of stainless steel plate. In CFRE plated tibia, the resorption-cavity is much smaller than stainless steel plated, and there is some formation of woven bone beneath the plate. In conclusion, CFRE is ideal material in the aspect of its biomechanical compatibility and tissue tolerance. Further efforts on production and varying design of CFRE make it to use widely in clinical application, Such as internal fixator of fracture and temporary replacement of tendon or ligament.
Achilles Tendon
;
Bony Callus
;
Carbon
;
Collagen
;
Fibroblasts
;
Foreign-Body Reaction
;
Internal Fixators
;
Ligaments
;
Osteotomy
;
Rabbits
;
Rupture
;
Stainless Steel
;
Tendons
;
Tibia
3.Chemical Analysis of Urinary Calculi.
Hee Yong LEE ; Hak Lim KIM ; Hak Song LEE
Korean Journal of Urology 1960;1(2):139-140
During the period from 1964 to 1958, chemical analyses of urinary calculi were performed on 88 cases treated in the Department of Urology, Seoul National University Hospital. The chemical composition of the calculi analysed is recorded in the following table. COMPOSITION NUMBER OF CASES % OF TOTAL Calcium oxalate 27 30.7 Calcium phosphate 25 28.5 Oxalate & phosphate 17 19.3 Uric acid & phosphate 8 9.1 Uric acid & Oxalate 6 6.8 Uric acid 3 3.4 Carbonate 1 1.1 Carbonate & phosphate 1 1.1 Total 88 100
Calcium
;
Calcium Oxalate
;
Calculi
;
Carbon
;
Seoul
;
Uric Acid
;
Urinary Calculi*
;
Urology
4.Clinical Experience with Lederkyn in Genito-urinary Diseases.
Key Ha PARK ; Hak Lim KIM ; Hak Song LEE
Korean Journal of Urology 1960;1(1):65-67
Lerderkyn, a recently introduced sulfonamide, has been administrated to 11 cases in doses ranging from 1 to 3 gm daily. The compound is rapidly absorbed from the gastrointestinal tract and therapeutically effective plasma concentration is maintained rapidly and for many hours, following the oral administration. The diffusion of Ledrkyn into the tissue and the body fluid occurs readily and is slowly excreted through the kidney. Maintenance of effective concentration in urine for many hours results in successful treatment especially for genito-urinary tract infection. In this study, five acute gonococcal urethritis, one non-gonococcal urethritis, two acute cystitis, three chronic prostatitis have been treated with this drug in doses of 1 to 3 gm daily and very satisfactory results obtained in acute bacterial infection.
Administration, Oral
;
Bacterial Infections
;
Body Fluids
;
Cystitis
;
Diffusion
;
Gastrointestinal Tract
;
Kidney
;
Plasma
;
Prostatitis
;
Urethritis
5.EMA-CO regimen in high-risk gestational trophoblastic disease.
Sang Lim CHOI ; Yong Hak KIM ; Ki Tae KIM ; Hyun Chan KIM
Korean Journal of Obstetrics and Gynecology 1992;35(1):85-96
No abstract available.
Gestational Trophoblastic Disease*
6.A Clinical Observation on Maxillary Sinusitis with Asocated Chronic Cough in Children.
Sun Jong KIM ; Jee Sung KIM ; Byung Hak LIM ; Im Ju KANG
Journal of the Korean Pediatric Society 1986;29(9):41-50
No abstract available.
Child*
;
Cough*
;
Humans
;
Maxillary Sinus*
;
Maxillary Sinusitis*
7.Predictors of neurologic handicap in hypoxic ischemic encephalopathy.
Seung Tae KIM ; Gui Ran KIM ; Byung Hak LIM ; Sang Geel LEE ; Im Ju KANG
Journal of the Korean Pediatric Society 1991;34(4):473-479
No abstract available.
Hypoxia-Ischemia, Brain*
8.Normative Measurements of Ko rean Orbital Structure.
Dae Won LIM ; Jong Soo LEE ; Hak Jin KIM
Journal of the Korean Ophthalmological Society 2001;42(1):1-6
We studied to establish criteria for the diameters of normal extraocular muscles, the width of the optic nerve, and the globe position by CT, and to investigate the effects of age and sex on these structures among Korean populations. Diameters of extraocular muscles, distance from the interzygomatic line to the posterior margin of the globe, width of the optic nervesheath complex, and length of the interzygomatic line were calculated for 428 normal orbit on axial and direct coronal CT images. Normal range for the diameters of extraocular muscles were medial rectus : 2.2~5.4 mm, lateral rectus: 2.1~4.9 mm, inferior rectus: 2.5~5.7 mm, and superior complex group : 2.6~6.4 mm. The mean optic nerve-sheath complex was 4.1 mm ranged from 2.9 mm to 5.3 mm, and the mean length of interzygomatic line was 103.8 mm. The normal position of the globe was 11.2 mm behind the interzygomatic line(range, 6.4~15.3 mm). The mean diameters of extraocular muscles, sum of all muscle, optic nerve-sheath complex, globe position, and the mean length of interzygomatic line were larger in males than females. However, there was no significant difference between male and female patients except interzygomatic line, and there was also no difference among the various age groups(P>0.05). Our results may help to assess enlargement of the extraocular muscles and the optic nerve as well as determining whether exophthalmos is present in a practical quantitative method.
Exophthalmos
;
Female
;
Humans
;
Male
;
Muscles
;
Optic Nerve
;
Orbit*
;
Reference Values
9.A Case of Typhoid Fever Complicated with Empyema of Gall Bladder.
Sang Ho CHOI ; Jae You CHOI ; Byung Hak LIM ; Im Ju KANG ; Sang Hyup KIM
Journal of the Korean Pediatric Society 1988;31(3):386-390
No abstract available.
Empyema*
;
Typhoid Fever*
;
Urinary Bladder*
10.Two Cases of Spontaneous Subcapsular Hematoma of the Kidney.
Hak Sul KIM ; Gil Nam JIN ; Dai Haing CHO ; Soo Kil LIM
Korean Journal of Urology 1975;16(3):157-160
Spontaneous Subcapsular hematoma of the kidney is relatively uncommon. Although several cases have been recorded in the literature, the diagnosis was seldom made preoperatively. Selective renal angiography provide an excellent means of diagnosing this lesion prior to surgery. Case I: A 37 years male was admitted with the right flank pain and hematuria. Excretory urogram showed moderate hydronephrosis and a cystic shadow compressing upper calices. Selective renal angiography showed strip-like curvilinear capsular density outside the nonopacifying mass. By exploration, blood clots, about 300 c. c., between renal parenchyma and renal capsule was evacuated. The cause of the hematoma is uncertain whether it is from ruptured aneurysm or due to hydronephrosis. Case II : A 54-year-old woman was hospitalized with right flank discomfortness and mild fever. Intravenous pyelogram revealed increased size of the right kidney and angiogram demonstrated the compressed and flattened renal parenchyma by a nonopacifying mass and renal capsule on the outer margin of the mass. Blood clots, about 200 c.c., inside the renal capsule which compressed renal parenchyma was evacuated.
Aneurysm, Ruptured
;
Angiography
;
Diagnosis
;
Female
;
Fever
;
Flank Pain
;
Hematoma*
;
Hematuria
;
Humans
;
Hydronephrosis
;
Kidney*
;
Male
;
Middle Aged