1.The Biomechanical Study for the Initial Stability of Porous - coated Acetabular Components in Total Hip Arthroplasty.
Young Su BYUN ; Sang Won PARK ; Jong Woong PARK
The Journal of the Korean Orthopaedic Association 1998;33(7):1691-1702
The purpose of this study was to investigate the gaps of bone-acetabular component interface, the initial mechanical stability and the effects of adjuvant screw fixation in the press-fitted two different shaped porous-coated acetabular components. Semi-hemispherical Harris-Galante II cup and full hemispherical Trilogy cup were press-fitted with or without adjuvant screw fixation in 40 bovine femur. The gaps of bone-implant interface were measured in each radiography of all specimen and axial compression tests and rotational stability tests were performed using servohydraulic tension-compression machine. There was significantly smaller gap at polar 1/3 region in the specimen implanted with Trilogy cup. But the adjuvant screw fixation did not affect the amount of gap. There was no significant statistical difference in axial load and rotational stability test in each situations of fixation. This study demonstrates that the initial mechanical stability is not influenced by the shape of semi-hemispherical Harris-Galante II cup and full hemispherical Trilogy cup and also independent of adjuvant screw fixation. But smaller gap of Trilogy cup at the polar 1/3 region indicates the possibility that less amout of wear debris of polyethylene or metal will be deposited and therefore less osteolysis or cup loosening will occur, but this hypothesis should be confirmed by the long-term clinical follow-up.
Acetabulum*
;
Arthroplasty, Replacement, Hip*
;
Femur
;
Follow-Up Studies
;
Osteolysis
;
Polyethylene
;
Radiography
2.Open Reduction of Intra-Articular Fractures of the Calaneus through the Lateral Approach
Young Soo BYUN ; Hong Tae KIM ; Bong Hoon PARK ; Jae Koo LEE ; Hyug Su AN
The Journal of the Korean Orthopaedic Association 1994;29(3):764-773
Displaced intra-articular fractures of the calcaneus result in serious and prolonged disability. These injuries continue to pose a therapeutic challange and there remains a great deal of controversy regarding treatment, operative versus nonperative. The lateral approach for open reduction, popularized by Palmer, has been used by many authors, with high percentage of excellent results. We treated 21 displaced intra-articular fractures of the calvaneus in 18 patients by open reduction and internal fixation through the lateral approach from July 1990 to May 1992 and the patients have been followed from 12 to 36 months from the time of their injury. The clinical and radiographic analyses were as follows; 1. The most common cause of injury was falls from a height: 19 fractures in 16 patients(88.8%), Spine fracture was most commonly associated injury : 5 patients (27.8%). 2. Fracture was classified according to classification of Paley and Hall. Eight fractures were tongue type(no comminution 4, with comminution 4), 12 joint depression type(no comminution 8, with comminution 4), and a comminuted type. 3. The average bohler tuber-joint angle was
Accidental Falls
;
Calcaneus
;
Classification
;
Congenital Abnormalities
;
Depression
;
Follow-Up Studies
;
Foot
;
Fractures, Comminuted
;
Heel
;
Humans
;
Hypesthesia
;
Intra-Articular Fractures
;
Joints
;
Osteomyelitis
;
Spine
;
Toes
;
Tongue
;
Transplants
3.Cosed, semiclosed, open intramedullary nailing in segmental fractures of fmoral shaft.
Seung Ho YUNE ; Kwang Jin RHEE ; Deuk Su HWANG ; Ki Yong BYUN ; Jun Young YANG
The Journal of the Korean Orthopaedic Association 1993;28(5):1684-1690
No abstract available.
Fracture Fixation, Intramedullary*
4.A familial case of tricho-rhino-palangeal syndrome.
Kyong Ok KO ; Sang Hyun BYUN ; Jong Jin SEO ; Kun Su RHEE ; Young Hun CHUNG ; Yong Bae SIN
Journal of the Korean Pediatric Society 1992;35(8):1135-1140
No abstract available.
5.Analysis of Hemodynamic Parameters of Electrical Bioimpedance on Increased Blood Pressure Inuced by Pneumoperitoneum during Laparoscopic Cholecystectomy.
Ki Su BYUN ; Dong Gun LIM ; Young Kook YUN
Korean Journal of Anesthesiology 1998;35(6):1113-1118
PURPOSE: To analyze hemodynamic parameters of electrical bioimpedance on increased blood pressure induced by pneumoperitoneum and compare hemodynamic effects of propofol and isoflurane during laparoscopic cholecystectomy. METHODS: Systemic vascular resistance index(SVRI), index of contractility(IC), end diastolic index(EDI), mean arterial pressure(MAP) and heart rate(HR) were measured after anesthetic induction, 5, 10, 15 and 30 minutes after CO2 insufflation and after CO2 removal. RESULTS: In isoflurane group, MAP, IC, SVRI were increased but EDI was decreased after induction of pneumoperitoneum. In propofol group, MAP, SVRI were increased but IC was decreased after induction of pneumoperitoneum. HR was not changed during operartion. CONCLUSION: After induction of pneumoperitoneum, MAP is increased by increased IC and SVRI in isoflurane. In case of propofol, the MAP is increased by increased SVRI. It seems that increased transmural pressure of lymphatics and splanchnic vasculatures rather than sympathetic stimulation increases SVRI after pneumoperitoneum.
Blood Pressure*
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Cholecystectomy, Laparoscopic*
;
Heart
;
Hemodynamics*
;
Insufflation
;
Isoflurane
;
Pneumoperitoneum*
;
Propofol
;
Vascular Resistance
6.Presentation of a Mullerian Duct Cyst in a Male Child with Prolonged Fever
Dong Hee KANG ; Su Yeon KIM ; Young Eun KIM ; Sung Hwan BYUN
Soonchunhyang Medical Science 2021;27(1):20-22
The Mullerian duct cyst (MDC) occurs due to incomplete focal regression and saccular dilatation of the paramesonephric duct. It is usually found asymptomatic in adults, but it also shows symptoms such as ejaculatory impairment, hematospermia, pelvic pain, urinary retention, and urinary tract infections. MDCs are rare in children. Transrectal ultrasonography, computed tomography, and magnetic resonance imaging are useful for diagnosis. Treatment is based on age, clinical symptoms as well as size and location of the cyst. Here, we report a case of a 19-month-old boy with an infectious MDC that presented with fever. He has improved with antibiotic treatment, not surgical resection.
7.Presentation of a Mullerian Duct Cyst in a Male Child with Prolonged Fever
Dong Hee KANG ; Su Yeon KIM ; Young Eun KIM ; Sung Hwan BYUN
Soonchunhyang Medical Science 2021;27(1):20-22
The Mullerian duct cyst (MDC) occurs due to incomplete focal regression and saccular dilatation of the paramesonephric duct. It is usually found asymptomatic in adults, but it also shows symptoms such as ejaculatory impairment, hematospermia, pelvic pain, urinary retention, and urinary tract infections. MDCs are rare in children. Transrectal ultrasonography, computed tomography, and magnetic resonance imaging are useful for diagnosis. Treatment is based on age, clinical symptoms as well as size and location of the cyst. Here, we report a case of a 19-month-old boy with an infectious MDC that presented with fever. He has improved with antibiotic treatment, not surgical resection.
8.Association between Insomnia and Depression in Tinnitus Patients.
Su Il KIM ; Tae Hyun KIM ; Young Seok BYUN ; Ji Hyun CHUNG ; Su Jin KIM ; Moon Suh PARK ; Jae Yong BYUN
Korean Journal of Otolaryngology - Head and Neck Surgery 2015;58(5):313-317
BACKGROUND AND OBJECTIVES: About one third of all people experience tinnitus in their life. And insomnia is the second most common symptom in tinnitus patients, following hearing disturbance. The aim of this study was to define the influence of insomnia on the clinical features of tinnitus patients and to assess the relation of tinnitus to insomnia and depression. SUBJECTS AND METHOD: The consecutive 197 patients with tinnitus were enrolled from May 2012 to May 2013 for this study. All patients with tinnitus filled out the following questionnaire, Visual Analogue Scale, Tinnitus Handicap Inventory (THI), Beck Depression Inventory (BDI), and Pittsburgh Sleep Quality Index (PSQI) for evaluating clinical features of tinnitus patients. Also we examined pure tone audiometry and tinnitogram for evaluating audiologic characteristics. RESULTS: When the insomnia was defined as more than five scores in PSQI, 46 of 197 patients had insomnia. Loudness of tinnitus was significantly higher in the tinnitus patients with insomnia group when compared to those of the tinnitus without insomnia group (p=0.018). The score of THI and BDI were significantly higher in the tinnitus with insomnia group, too (p=0.003, <0.001, respectively). A strong correlation (r=0.616, p<0.001) was shown between THI score and BDI score in both groups. CONCLUSION: It appears, due to the high possibility that depression and insomnia are related in tinnitus patients with insomnia, that proper evaluations about sleep disturbance and depression of tinnitus patients are necessary to produce better therapeutic results.
Audiometry
;
Depression*
;
Hearing
;
Humans
;
Surveys and Questionnaires
;
Sleep Initiation and Maintenance Disorders*
;
Tinnitus*
9.Efficacy of Conjunctival Application Using Cotton-tipped Applicator for Mydriasis and Cycloplegia.
Yong Soo BYUN ; Su Young KIM ; Young Hoon PARK ; Young Chun LEE
Journal of the Korean Ophthalmological Society 2008;49(4):623-627
PURPOSE: We compared the efficacy of applying mydriatics to the conjunctiva of the lower eyelid by using a cotton-tipped applicator with an eye-dropping method. METHODS: Thirty children under 16 years of age (60 eyes) and 30 adults more than 20 years old (60 eyes) were randomly chosen. Mydriatics were applied to each eye using an eye-dropping method for one eye and a conjunctival application method using a cotton-tipped applicator for the other eye. Pupil size was measured before applying mydriatics, immediately and at 30 and 60 minutes after application. Also, we investigated the degree of discomfort. RESULTS: In the children, the pupil size in the eye dropping group and the conjunctival application group were each 8.01+/-0.57 mm and 7.97+/-0.57 mm at 60 minutes after applying mydriatics (P=0.07). In the adults, the pupil size was 7.94+/-0.59 mm in the eye-dropping group and 7.89+/-0.55 mm in the conjunctival application group at 60 minutes after applying mydriatics (P=0.074). In terms of degree of discomfort, the adults found the conjunctival application method to be significantly more unpleasant than the eye-dropping method at each three applications (P=0.001, 0.001, 0.001). CONCLUSIONS: The conjunctival application method using a cotton-tipped applicator has an equal effect in terms of mydriasis compared to the eye-dropping method. It is convenient to use in children and in the elderly who show less compliance. Also, this new method reduces systemic absorption of the medication. Therefore, the conjunctival application method is a good substitute for the conventional methods for mydriasis.
Absorption
;
Adult
;
Aged
;
Child
;
Compliance
;
Conjunctiva
;
Eye
;
Eyelids
;
Humans
;
Mydriasis
;
Mydriatics
;
Pupil
10.Oxidized LDL and inflammatory markers in ischemic heart disease.
Jon SUH ; Jeong Duk BYUN ; Young Keun ON ; Min Su HYON ; Sung Koo KIM ; Young Joo KWON
Korean Journal of Medicine 2003;64(5):535-541
BACKGROUND: There is increasing evidence that inflammation is an important determinant of the development of atherosclerosis and that oxidation of low-density lipoprotein (LDL) obviously plays an important role in the pathogenesis of atherosclerosis. We assessed the levels of oxidized LDL and inflammatory markers in patients with ischemic heart disease and normal group who has normal coronary angiograms. METHODS: Coronary angiography was performed in 142 patients. 107 patients of ischemic heart disease (stable angina pectoris 58, unstable angina pectoris 30, acute myocardial infarction 19) and 38 normal control subjects. We assessed the level of oxidized LDL and inflammatory markers, such as CRP, ESR, fibrinogen and leukocyte. RESULTS: CRP was 3.88+/-2.05 mg/dL in acute myocardial infarction group, and 0.29+/-0.15 mg/dL in normal control subject group (p<0.05). Fibrinogen was 541.6+/-45.1 mg/dL in acute myocardial infarction group, 321.4+/-25.6 mg/dL in normal control subject group (p<0.05). Leukocyte was 10942.1+/-737.6/mm3 in acute myocardial infarction group, 6394.3+/-235.1/mm3 in normal control subject group (p<0.05). Oxidized LDL was 23.0+/-4.0 EU/mL in acute myocardial infarction group, and 16.2+/-1.5 EU/mL in normal control subject group (p<0.05). CRP, ESR and fibrinogen values of the patients with stable angina pectoris and unstable angina pectoris were higher than that of normal control group, but there were no statistical significance. Oxidized LDL (ox-LDL) and Leukocyte value of the patients with unstable angina pectoris, acute myocardial infarction was significantly higher than that of the patients with stable angina pectoris and normal control subjects (p<0.05). CRP, ESR and fibrinogen values of the patients with acute myocardial infarction were also higher than that of normal control subjects. CONCLUSION: This study demonstrate that CRP, fibrinogen and oxidized LDL, leukocyte values of acute myocardial infarction group were significantly higher than that of control group and stable, unstable angina pectoris group. Oxidized LDL and Leucokyte values were also significantly elevated in unstable angina group, but CRP values were not in unstable angina group.
Angina Pectoris
;
Angina, Stable
;
Angina, Unstable
;
Atherosclerosis
;
Coronary Angiography
;
Fibrinogen
;
Humans
;
Inflammation
;
Leukocytes
;
Lipoproteins
;
Myocardial Infarction
;
Myocardial Ischemia*