1.The Effect of Polyurethane Film with Sustained Release Edxamethasone on Prevention of Experimental Fat Adherence Syndrome in Rabbits.
Dong Gyu CHOI ; Soon Il KWON ; Seo Young JEONG
Journal of the Korean Ophthalmological Society 1999;40(1):219-227
The fat adherence syndrome(FAS) is a severe form of the restrictive strabismus resulting from the adherence of orbital tissues to the globe of extraocular muscles and their attachments, for which no successful treatment currently exists. we developed anexperimental model for the FAS in the rabbit eyes and then evaluated the effects of polyurethane film with sustained release dexamethasone on the prevention of experimental FAS. Thirty eyes of fifteen white rabbits had a fat autograft placed between the inferior rectus and the periosteum of the inferior orbital rim and then, the inferior rectus, the fat and the periosteum were sutured to create an experimental FAS. In Group I the experimental FAS was only induced as a control group. The polyurethane film with no released substance and the polyurethane film with sustained release of dexamethasone were inserted between the inferior rectus and the fat in Group II and Group III, respectively. The force required to move the eyeball superiorly 4mm, 6mm, and 8mm was measured preoperatively and 4 weeks ostoperatively. At postoperative 4 weeks the surgical dissection to evaluate the degree of the adhesion and the histologic examination were performed. A significant increase in forced duction(postop-preop) was found at all levels of ocular rotation in Group I and it means that the induction of experimental FAS was successful. Histology revealed a moderate inflammatory response with partial loss of normal adipose tissue replaced by fibrovascular tissue. Group III had significantly less restriction than Group I and Group II. Group II had less restriction than Group I, but statistically not significant. In conclusion, the use of the polyurethane film with sustained release of dexamethasone may have a role in the prevention of experimental FAS.
Adipose Tissue
;
Autografts
;
Dexamethasone
;
Muscles
;
Orbit
;
Periosteum
;
Polyurethanes*
;
Rabbits*
;
Strabismus
2.The Evaluation of Anterior Segment Circulation after Strabismus Surgery by using Indocyanine Green(ICG) Iris Angiography.
Soon Il KWON ; Min Chul SHIN ; Dong Gyu CHOI
Journal of the Korean Ophthalmological Society 1998;39(12):3069-3077
Anterior segment ischemia is a rare, but serious complication of strabismus surgery, Iris microvascular circulation in eyes with blue irides has been investigated by fluorescein iris angiorgaphy, which failed to demonstrate the iris vascular pattern in eyes with heavily pigmented irides like Oriental brown iris. Anterior segment circulation in eyes of Korean after strabismus surgery was investigated by iris angiography using indocyanine green(ICG), which highly penetrates through the pigmented tissue or hemorrhage ICG iris angiography using confocal scanning laser ophthalmolscope was performed before and after strabismus surgery in 20 eyes of 20 Koreans. Tenotomies of medial and lateral recti produced no appreciable circulatory disturbance in the iris in any patients, but there was mild delayed filling in 2 eyes of 6 eyes undergoing tenotomy of one or both vertical recti. When tenotomies of a horizontal and a vertical rectus were combined, the filling defect occurred in the region of radial vessels was observed in eyes with tenotomies of medial rectus and lateral halves of superior and inferior recti. Our study suggests that ICG iris angiography is a useful means for the evaluation of anterior segment circulation I darkly pigmented iris like Oriental brown iris. And there was the remarkable change in iris microvascular circulation only after tenotomy of multiple muscles including vertical rectus muscles.
Angiography*
;
Fluorescein
;
Hemorrhage
;
Humans
;
Iris*
;
Ischemia
;
Muscles
;
Strabismus*
;
Tenotomy
3.Treatment of the Buttonhole Deformity of Fingers
Chang Soo KANG ; Kwang Soon SONG ; Young Sik PYUN ; Sung Won SOHN ; Young Chul KWON ; Gyu Dong KIM
The Journal of the Korean Orthopaedic Association 1985;20(4):708-712
A buttonhole deformity of the finger is characterized by flexion of the pmximal interphalangeal joint and hyperextension of the terminal interphalangeal joint. When the central slip of the extensor tendon and the triangular ligament are ruptured,(or severed) on the base of the middle phalanx, buttonhole deformity will result.This article is based on clinical and follow up studies of 5 patients with buttonholedeformities. Five cases were treated by the modified Littler method and were followed from 4 months to 24 months postoperatively and good results were obtained in all cases.
Congenital Abnormalities
;
Fingers
;
Follow-Up Studies
;
Humans
;
Joints
;
Ligaments
;
Methods
;
Tendons
4.Synovial Chondromatosis
Chang Soo KANG ; Kwang Soon SONG ; Young Sik PYUN ; Sung Won SHON ; Young Chul KWON ; Gyu Dong KIM
The Journal of the Korean Orthopaedic Association 1985;20(5):967-973
Synovial chondromatosis is an uncommon benign lesion characterized by metaplastic cartilage formation within the synovial connective tissue which disintegrates into the joint and continues to grow. Of the eight cases of synovial chondromatosis seen by the authors, three cases involved the knee, two of these were bilateral, three cases involved the elbow, one the hip joint and one the proximal phalanx of the right middle finger. The diagnosis of synovial chondroamtosis was made by histopathological findings of the excised mass. Most synovial chondromatosis cases obtained favorable results by removing masses from the joint and at the same time performing a partial synovectomy, except one case in which degenerative arth ritis had developed proeoperatively.
Cartilage
;
Chondromatosis, Synovial
;
Connective Tissue
;
Diagnosis
;
Elbow
;
Fingers
;
Hip Joint
;
Joints
;
Knee
5.Results of Hip Arthroplasty Using a COREN Stem at a Minimum of Ten Years
Joon Soon KANG ; Yoon Cheol NAM ; Dae Gyu KWON ; Dong Jin RYU
Hip & Pelvis 2022;34(4):211-218
Purpose:
We report on the 10-year clinical hip function and radiologic outcomes of patients who underwent hip arthroplasty using a COREN stem.
Materials and Methods:
A consecutive series of 224 primary cementless hip arthroplasty implantations were performed using a COREN stem between 2009 and 2011; among these, evaluation of 128 hips was performed during a minimum follow-up period of 10 years. The mean age of patients was 65.4 years (range, 40-82 years) and the mean duration of follow-up was 10.8 years (range, 10-12 years). Evaluation of clinical hip function and radiologic implant outcomes was performed according to clinical score, thigh pain, and radiologic analysis.
Results:
Dramatic improvement of the mean Harris hip score (HHS) from 59.4 preoperatively to 93.5 was observed at the final follow-up (P≤0.01). Stable fixation was demonstrated for all implants with no change in position except for one case of Vancouver type B2 periprosthetic femur fracture. A radiolucent line (RLL) was observed in 16 hips (12.5%). Thigh pain was observed in only two hips (1.6%) at the final follow-up. There were no cases of osteolysis around the stem. The survival rate for the COREN stem was 97.7%.
Conclusion
Good long-term survival with excellent clinical and radiological outcomes can be achieved using the COREN femoral stem regardless of Dorr type.
6.A Case of Metastatic Melanoma of the Rectum.
Seong Wu LEE ; Soon Koo BAIK ; Young Gyu LEE ; Dong Ki LEE ; Woo Ick JANG ; Sang Ok KWON ; Gye Keol SHIN ; Soon Hee JUNG
Korean Journal of Gastrointestinal Endoscopy 1993;13(2):411-413
A 42-year-old woman preseated with intermittent rectal bleeding of a week's duration. A large polypoid mass with pigmented, ulcerated, nodular surface was seen in the rectum at 3cm from the anal verge during flexible sigmoidoscopy. A histologic diagnosis of metastatic melanoma wae made on light microscopic examination of biopsies obtained at sigmoidoscopy. The presence of metastatic melanoma at sites other than the rectum was found at the skin, pleura and lung. We report a case of metastatic malignant melanoma of the rectum with the review of the literature.
Adult
;
Biopsy
;
Diagnosis
;
Female
;
Hemorrhage
;
Humans
;
Lung
;
Melanoma*
;
Pleura
;
Rectum*
;
Sigmoidoscopy
;
Skin
;
Ulcer
7.Aspergillus Osteomyelitis of the spine: A Case Report.
Pil Yeob CHOI ; Yun Gyu SONG ; Jae Soo KWON ; Young Soon SUNG ; O Joon KWON
Journal of the Korean Radiological Society 1996;34(5):585-588
We report a case of Aspergillus osteomyelitis of the spine in a 52-year-old female with back pain. Anteroposterior and lateral roentgenograms showed narrowing of the intervertebral disc space of T12-L1 with irregular vertebral endplates. MRI showed spondylodiscitis at T12-L1. Although tuberculous spondylitis is far more prevalent that fungal spondylitis, it is difficult to differentiate one from the other radiographically.
Aspergillosis
;
Aspergillus*
;
Discitis
;
Female
;
Humans
;
Intervertebral Disc
;
Magnetic Resonance Imaging
;
Middle Aged
;
Osteomyelitis*
;
Spine*
;
Spondylitis
8.Clinical Characteristics of Methicillin-resistant Staphylococcus aureus Infection for Chronic Periprosthetic Hip and Knee Infection.
Dong Jin RYU ; Joon Soon KANG ; Kyoung Ho MOON ; Myung Ku KIM ; Dae Gyu KWON
Hip & Pelvis 2014;26(4):235-242
PURPOSE: Deep infection after hip and knee arthroplasty is a serious complication and is difficult to treat due to its toxicity. The aims of our study were to find out the differences of methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-sensitive Staphylococcus aureus (MSSA) infection after hip and knee arthroplasty focusing on clinical course and laboratory findings. MATERIALS AND METHODS: We retrospectively reviewed 61 staphylococcal infection cases after hip and knee arthroplasty (MSSA in 25 patients, MRSA in 36 patients). Vital signs, laboratory tests, microbiology and clinical courses were analyzed. The average follow-up period was 3.8 years (range, 2 to 10.1 years). RESULTS: At initial visit, MRSA group showed significant higher erythrocyte sedimentation rate, C-reactive protein (CRP) and neutrophil percentage. The average duration for the normalization of CRP was longer in MRSA group (MRSA: 36.7+/-25.1 days, MSSA: 24.7+/-13.6 days; P=0.008). The mean interval between staging operation was longer in MRSA group (MRSA: mean 8.7 weeks [range, 6.4 to 21.4 weeks], MSSA: mean 6.8 weeks [range, 6 to 13.1 weeks]; P=0.012). MRSA group (13.9%) revealed higher recurrence rate than MSSA group (4%). Two patients (5.6%) from MRSA group expired by sepsis. One limb amputation (2.7%) was carried out in MRSA group. CONCLUSION: MRSA infection after arthroplasty showed more toxic serologic parameter and poorer prognosis. Aggressive treatment should be considered for MRSA infection following arthroplasty.
Amputation
;
Arthroplasty
;
Blood Sedimentation
;
C-Reactive Protein
;
Drug Resistance, Microbial
;
Extremities
;
Follow-Up Studies
;
Hip*
;
Humans
;
Knee*
;
Methicillin-Resistant Staphylococcus aureus*
;
Neutrophils
;
Prognosis
;
Recurrence
;
Retrospective Studies
;
Sepsis
;
Staphylococcal Infections
;
Staphylococcus aureus
;
Vancomycin
;
Vital Signs
9.An Integrated Database and Web Service for Microbial Resources at KACC.
Chang Kug KIM ; Young Ah JEON ; Gyu Taek CHO ; Soon Wo KWON ; Yong Hwan KIM ; Seung Beom HONG
Genomics & Informatics 2009;7(1):41-45
The Korean Agricultural Culture Collection (KACC) has developed a web-based system to provide an integrated database with information updates about microbial resources. This integrated database consists of 5 major functions and contains general information, which includes identification numbers, culture media composition, image information, DNA sequences, patent information, and general forms for ordering and depositing microorganisms. In 2008, KACC started providing characterization information. KACC maintains 9,801 cultures of microorganisms, including 3,296 strains of bacteria, 4,734 fungi, 784 actinomycetes, 64 yeasts, and 923 others.
Actinobacteria
;
Bacteria
;
Base Sequence
;
Culture Media
;
Fungi
;
Yeasts
10.A Case of Primary Lymphoma Presenting as Cauda Equina Syndrome.
Seung Hee CHAE ; Soon Hee KWON ; Suk Young ROH ; Kyung Gyu CHOI ; Yoon Jung CHOI
Journal of the Korean Neurological Association 2000;18(4):490-493
Primary CNS lymphoma (PCNSL) which is localized in the cauda equina of the spinal cord is very rare. A 75-year-old man had pain in both legs and gait disturbance for the last 45 days. Painful paresthesia and weakness in both legs worsened during a one month period and he was unable to stand up by himself. In a physical examination, lym-phadenopathy nor organomegaly was found. A neurological examination revealed a dominantly proximal muscle weak-ness of the lower extremities. All modalities of sensation were decreased in both legs and a Romberg test was found positive. A CSF cytology demonstrated a large B-cell lymphoma. Following an extensive evaluation of the patient, the lymphoma was found to be limited in the cauda equina. The patient was treated with systemic dexamethasone. After the treatment, his symptoms were improved and a follow up lumbar spine MRI showed shrunken cauda equina lesions.
Aged
;
Cauda Equina*
;
Dexamethasone
;
Follow-Up Studies
;
Gait
;
Humans
;
Leg
;
Lower Extremity
;
Lymphoma*
;
Lymphoma, B-Cell
;
Magnetic Resonance Imaging
;
Neurologic Examination
;
Paresthesia
;
Physical Examination
;
Polyradiculopathy*
;
Sensation
;
Spinal Cord
;
Spine