1.Ulnar neuropathy.
Journal of the Korean Medical Association 2017;60(12):951-957
Cubital tunnel syndrome is the second most common compressive neuropathy. Its diagnosis is largely based on clinical findings. It has been well known that patients with mild to moderate grade of cubital tunnel syndrome have a high chance of spontaneous resolution, while those with severe degree do not. Thus, the former is treated with conservative methods initially, and the latter is indicated for surgical intervention. There are three types of surgical techniques for cubital tunnel syndrome. Of these, in-situ decompression technique has been gaining popularity as it is simpler and shows similar efficacy with less complications compared to other techniques. In this review, we deal with current concepts of the cubital tunnel syndrome pertaining to the primary clinical practice.
Cubital Tunnel Syndrome
;
Decompression
;
Diagnosis
;
Humans
;
Ulnar Nerve
;
Ulnar Neuropathies*
2.The Effects of Bone Morphogenetic Protein-4 and Resorbable Membrane on the Regeneration of Periodontal Tissues.
Sang Cheol LIM ; Young Hyuk KWON ; Man Sup LEE ; Joon Bong PARTK
The Journal of the Korean Academy of Periodontology 2000;30(4):757-777
The aim of our study is to achieve complete periodontal tissue regeneration by the application of BMP and resorbable membrane. Three beagle dogs aged over one and half years and weighed 14 to 16 kg were used in this study. Mandibular 1st, 2nd premolars were extracted bilaterally. Horizontal furcation defects were induced around 3rd, 4th premolars bilaterally. BMP-4 were applied in the right side with resorbable membranes and only resorbable membranes were applied in the left side respectively. Each animal was sacrificed at 2, 4, and 8weeks, after regenerative surgery. Specimens were prepared with Hematoxylin-Eosin stain and Goldner's modified Masson Trichrome stain for light microscopic evaluation. The results were as follows: 1. At 2 weeks after regenerative surgery, downgrowth of junctional epithelium was observed both in the membrane-applied site and BMP-4-and-membrane-applied site. 2. At 4 weeks after regenerative surgery, resorbable membranes were completely resolved, therefore would not prevent downgrowth of junctional epithelium. New bone formation, new cementum formation and Sharpey's fiber were observed in BMP-4-and-membrane-applied site. 3. At 8 weeks after regenerative surgery, downgrowth of junctional epithelium was observed in the membrane-applied site. But, new cementum formation was observed in the same site. The extensive regeneration of new bone, new cementum and remarkable formation of Shapey's fiber were showed in BMP-4-and-membrane-applied site. 4. Resorbable membranes were resolved via the cell-mediated processes. 5. Periodontal tissue regeneration were better achieved in the BMP-4-and-membrane-applied site than in the membrane-applied site. Within the above results, BMP-4 may have the strong capability to form the new bone and resorbable membrane may be able to prevent the bony ankylosis. However, resolution rate of resorbable membrane may not be enough to protect rapid epithelial downgrowth for ideal periodontal regeneration. In conclusion, I suggest BMP-4 may have the strong possibility to be utilized in the clinical periodontal treatments.
Animals
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Ankylosis
;
Bicuspid
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Dental Cementum
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Dogs
;
Epithelial Attachment
;
Furcation Defects
;
Membranes*
;
Osteogenesis
;
Regeneration*
3.External Fixation for Distal Radius Fractures.
Journal of the Korean Society for Surgery of the Hand 2015;20(2):85-88
External fixation with or without ancillary K-wire fixation, once being one of the most popular methods of surgery for unstable distal radius fractures, is now losing its position due to a recent surge in the use of volar locking plates. However, these changes are not firmly grounded on scientific evidence. Recent clinical trials showed that a similar wrist function was achieved when the use of external fixation was compared with that of volar locking plates at 1 year after surgery for the treatment of unstable distal radius fractures, even though the rate of functional recovery was slower in the former. In addition, it is still a question whether additional costs and time paid for volar locking plates can be justified by such a small gain in wrist function. We will review recent studies comparing external fixation with volar locking plates regarding wrist function and costs, and discuss current indication of external fixation for unstable distal radius fractures.
Radius Fractures*
;
Wrist
4.Cortical Blindness After Cerebral Angiography.
II Taek KWON ; Ki Ryong NAM ; Bong Cheol KIM
Journal of the Korean Ophthalmological Society 1992;33(12):1238-1242
Cortical blindness means visual loss caused by bilateral destruction of visual cortex. Cortical blindness can develop after cerebral angiography due to hypertonic contrast medium which open the blood-brain barrier and then alternate the function of visual cortex transiently. About 30 minutes after injection of contrast medium (Ultravist 370(R)) during cerebral angiography, the patient complained of decrease of visual acuity. And 3 hours later, evaluation revealed that she could not see even the light. But her vision began to improve after 19 hours and recovered completely after 7 days. MRI taken at 12 hours after cerebral angiography showed high signal intensities in the both occipital lobes. But in repeated MRI study, which was taken after 3 days, previously noted high densities were completely disappeared. So we diagnosed this case as cortical blindness caused by hypertonic contrast medium.
Blindness, Cortical*
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Blood-Brain Barrier
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Cerebral Angiography*
;
Humans
;
Magnetic Resonance Imaging
;
Occipital Lobe
;
Visual Acuity
;
Visual Cortex
5.Cortical Blindness After Cerebral Angiography.
II Taek KWON ; Ki Ryong NAM ; Bong Cheol KIM
Journal of the Korean Ophthalmological Society 1992;33(12):1238-1242
Cortical blindness means visual loss caused by bilateral destruction of visual cortex. Cortical blindness can develop after cerebral angiography due to hypertonic contrast medium which open the blood-brain barrier and then alternate the function of visual cortex transiently. About 30 minutes after injection of contrast medium (Ultravist 370(R)) during cerebral angiography, the patient complained of decrease of visual acuity. And 3 hours later, evaluation revealed that she could not see even the light. But her vision began to improve after 19 hours and recovered completely after 7 days. MRI taken at 12 hours after cerebral angiography showed high signal intensities in the both occipital lobes. But in repeated MRI study, which was taken after 3 days, previously noted high densities were completely disappeared. So we diagnosed this case as cortical blindness caused by hypertonic contrast medium.
Blindness, Cortical*
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Blood-Brain Barrier
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Cerebral Angiography*
;
Humans
;
Magnetic Resonance Imaging
;
Occipital Lobe
;
Visual Acuity
;
Visual Cortex
6.Free Fillet Flap of the Forearm Amputee for Coverage of the Contralateral below Elbow Amputee and Restoration of the Flexion of the Elbow.
Soo Joong CHOI ; Bong Cheol KWON ; Kyu Hak JUNG
Journal of the Korean Microsurgical Society 2007;16(2):82-85
Free vascularized tissue transfer to preserve upper extremity amputation level is uncommon but very useful procedure. To cover the below-elbow amputee stump and restore the function of the elbow, we have used a free flap as a spare part concept from the contralateral hand which was so severely damaged that amputation was inevitable.
Amputation
;
Amputees*
;
Elbow*
;
Forearm*
;
Free Tissue Flaps
;
Hand
;
Humans
;
Upper Extremity
7.The acceptable range of the changes of tibiofemoral and patellofemoral joint position in PCL retaining TKA for improved clinical results.
Myung Chul LEE ; Bong Cheol KWON ; Sang Eun PARK ; Sang Rim KIM ; Sang Cheol SEONG
The Journal of the Korean Orthopaedic Association 2001;36(1):55-60
PURPOSE: to find out the change and limit of the changes of tibiofemoral joint line, patellar position and other related variables for improved postoperative knee function after PCL retaining TKRA. MATERIALS AND METHODS: The variables mentioned above were measured from the plain radiographs of 101 knees with PCL retaining TKRAs, correlated with clinical outcomes such as HSS score, range of motion and anterior knee pain. Then they were analyzed statistically. RESULTS: Tibiofemoral joint line, patellar height and femoral condylar size affected clinical outcomes. Excellent postoperative knee function resulted when the shift of tibiofemoral joint line position was between 5mm inferiorly to 5mm superiorly, postoperative patellar height between 15mm to 30mm, and the change of the femoral condylar size between 10mm decrease and 5mm increase. CONCLUSION: Excellent clinical results would be expected if the changes of the joint line position are kept within the range suggested in this paper.
Joints
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Knee
;
Knee Joint
;
Patellofemoral Joint*
;
Range of Motion, Articular
8.Medial Plantar Nerve Injury after Screw Fixation of the Calcaneus Fracture.
Bong Cheol KWON ; Yong Woon SHIN ; Duck Joo KWON ; Nam Kyou RHEE
Journal of the Korean Fracture Society 2006;19(2):288-290
We present a case of medial plantar nerve injury by screw tip after open reduction and internal fixation of intraarticular calcaneus fracture. We reviewed the risk and prevention technique of medial plantar nerve injury in fixing the calcaneus fracture.
Calcaneus*
;
Tibial Nerve*
9.Observation of Social Background and Disease Patterns of Children in an Institute for Adoption(the 3rd report).
Jae Bong KWON ; Cheol Soon PARK ; Jae Wook KO ; Myung Ik LEE ; Don Hee AHN
Journal of the Korean Pediatric Society 1995;38(1):81-90
OBJECTIVE: A Study was undertaken to assess the family background of abandonment and clinical and social aspects in an institute for foreign adoption. The results were compared to the previous two reports from the institute. METHOD: A sample of 1,728 children from 1987 to 1992 formed the subjects of the study by the medical records in the institution. RESULTS: 1) The unmber of girls were more than that of male and ratio of male to female was 1:1.1, which was reduced compared to previous study. 2) The distribution less than one month of age was most commonly and increased compared to previous study. 3) The Place at birth was hospital most commonly. 4) The type of delivery was full-term one(61.5%) and tend to be increased. 5) Age distribution of monthers was from 16 years to 25 years mainly, 1,081 of them(62.5%) were from unmarried one and 409(37.4%) were from married one. 6) By classifying the cause of adoption, unmarried mothers occupied main one(62.5%), poverty(13.4%) extramarital relations(5.2%), divorce(2.9%) and death of parents in the order of frequency, tend to increased in unmarried mothers. 7) Disease pattern showed respiratory disease, jaundice, acute gastroenteritis, pneumonia, urinary tract infection, conjunctivitis in order of frequency. By care of foster mother at private home since 1988, the incidence of the transmissible disease was reduced. 8) Congenital anomalies were cleft and palate, hydrocele, umbilical hernia and congenital heart disease in order frequency. 9) Three hundred and eighty two babies were admitted to general hospital. The main disease were bhaline membrane disease. Jaundice, pneumonia and urinary tract disease, sepsis in the order of frequency. CONCLUSIONS: The ratio of male to female in the institution showed no definite difference and the age was tend to be younger. The cause of adoption was unmarried mother mainly. Respiratory disease in the institution and hyaline membrane disease in the hospitalized was most common.
Age Distribution
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Child*
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Child, Institutionalized
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Conjunctivitis
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Female
;
Gastroenteritis
;
Heart Defects, Congenital
;
Hernia, Umbilical
;
Hospitals, General
;
Humans
;
Hyaline Membrane Disease
;
Illegitimacy
;
Incidence
;
Infant, Newborn
;
Jaundice
;
Male
;
Medical Records
;
Membranes
;
Mothers
;
Palate
;
Parents
;
Parturition
;
Pneumonia
;
Sepsis
;
Single Person
;
Urinary Tract Infections
;
Urologic Diseases
10.Open Reduction Through the Modified Volar Approach in Complex Dorsal Dislocations of the Metacarpophalangeal Joint.
Soo Joong CHOI ; Bong Cheol KWON ; Yong Beom LEE ; Won Hyoung SHIN
Journal of the Korean Society for Surgery of the Hand 2011;16(3):149-153
PURPOSE: To describe the surgical treatment of the complex dorsal metacarpophalangeal dislocations and its results, emphasizing on the modified volar approach with A1 pulley release. MATERIALS AND METHODS: We experienced 6 cases of dorsal dislocation of the metacarpophalangeal joint. We performed open reduction with the modified volar approach described by Eaton and Dray. Postoperatively posteroanterior and lateral radiographs of the index finger metacarpophalangeal joint and metacarpophalangeal joint range of motion was followed. RESULTS: One case with a large osteochondral fracture was operated with volar and doral approach both. Overall end results were good without any significant restriction of motion and stability of the fingers. CONCLUSION: Modified volar approach with A1 pulley release is an excellent method for complex dorsal metacarpophalangeal dislocations without osteochondral fracture.
Benzodiazepines
;
Dislocations
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Fingers
;
Metacarpophalangeal Joint
;
Range of Motion, Articular