1.Treating a Disease vs. Understanding a Disease.
Clinics in Orthopedic Surgery 2011;3(2):87-88
No abstract available.
*Attitude of Health Personnel
;
Bone Diseases/*therapy
;
Humans
;
Joint Diseases/*therapy
;
*Orthopedics
2.Preoperative Planning of Oblique Femoral Trochanteric Osteotomy by Geometric Analysis
The Journal of the Korean Orthopaedic Association 1995;30(5):1469-1480
Oblique single-plane trochanteric osteotomy, in which an oblique cut is made through the femoral trochanteric area and the bony fragments are rotated at the face of the cut in direct contact with each other, allows simulatenous correction of the femoral neck-shaft angle, femoral anteversion as well as flexion/extension effect. Only approximate methods of calculating the correction effects of this procedure have been introduced. Considering unique spatial orientation of femoral neck, we developed a rigorous method to calculate preoperatively the obliquity of the single-plane osteotomy and the amount of rotation required to achieve the target femoral conformation, through geometric analysis. The correction effect by oblique trochanteric osteotomy on the geometry of proximal femur was dependent not only on the amount of change of the neck-shaft angle and femoral anteversion but also on the preoperative neck-shaft angle and femoral anteversion themselves. The flexion/extesion effect was determined by the direction of the correction and the preoperative neck orientation. Computer graphic simulation study confirmed the validity of this method. A program written in QBASIC was introduced to make this complex calculation method more useful in the clinical practice.
Computer Graphics
;
Femur Neck
;
Femur
;
Methods
;
Neck
;
Osteotomy
3.Stasis Dermatitis: A Case Report.
Chung Koo CHO ; Joon Sik WOO ; Tae Ha WOO
Korean Journal of Dermatology 1969;7(1):71-72
A case of stasis dermatitis with hepatomegaly is reported. The patient is 50 year old male. About 3 years ago a dark-brownish macule on the left shin was appeared with the severe itching sensation and spread to the margin with edema, ulceration, and appeared the varricous veins on the margin, Biopsy on the ulceration revealed the hemociderin deposition and fibrosis in the dermis. The physical examination revealed that the liver was enlarged 3cm, below the right costal margin and liver biopsy showed early cirrhotic change, but without impairment of liver function. He was treated with massage, elastic bandage for 2 weeks with good response.
Biopsy
;
Compression Bandages
;
Dermatitis*
;
Dermis
;
Edema
;
Fibrosis
;
Hepatomegaly
;
Humans
;
Liver
;
Male
;
Massage
;
Middle Aged
;
Physical Examination
;
Pruritus
;
Sensation
;
Ulcer
;
Veins
4.Assessment of Sprengel Deformity Using Three - Dimensional Computed Tomography.
Tae Joon CHO ; In Ho CHOI ; Chin Youb CHUNG ; In Hyeok RHYOU
The Journal of the Korean Orthopaedic Association 1998;33(3):568-574
We evaluated the scapular shape, dispiacement and rotation in 10 cases of Sprengel deformity using three-dimensional computed tomography in order to investigate its clinical usefulness. Standard views, including trunk posterior view, scapular true posterior view and medial view, were taken, and the 3-D image was rotated in three axes to visualize the omovertebral bony connection. In the trunk posterior view, the amount of superior displacement of the affected scapula was measured using the glenoid level as reference, and the rotational deformity by the tilting of the base of scapular spine. Scapular dysplasia was evaluated in the scapular true posterior and medial views. The presence, size, and anchoring points of omovertebral bone were assessed in various view points. There was a tendency of inverse correlation hetween superior displacement and rotational deformity of scapula. In most cases, the affected scapulae were convex at their medial borders and concave at their lateral borders, with increased width/height ratio. The anchoring point of omovertebral connection appeared to determine the scapular shape, level, and amount of rotation. Three-dimensional CT was helpful in preoperative planning.
Congenital Abnormalities*
;
Imaging, Three-Dimensional
;
Scapula
;
Spine
5.The Analysis of Procedural Complications of Endovascular Aneurysm Coiling with GDC.
Jung Ho KO ; Young Joon KIM ; Joon Sung CHO ; Keun Tae CHO ; Bong Jin PARK ; Maeng Ki CHO
Journal of Korean Neurosurgical Society 2004;36(5):394-399
OBJECTIVE: The safety and effectiveness of Guglielmi Detachable Coil(GDC) embolization for cerebral aneurysm has been well documented. However, domestically there are few reports. The purpose of this study is to analyze procedural complications that occurred during endovascular coilling performed for cerebral aneurysms retrospectively. METHODS: From January 1996 to December 2003, a total of 453 patients (484 aneurysms) who had undergone GDC embolization for cerebral aneurysm were selected. The aneurysms were classified according to rupture history, location, dome and neck size. Procedural complications such as aneurysmal rupture, thrombosis and occlusion of patent vessels due to coil escape were noted. RESULTS: Procedural complications occurred 49 cases (10.1%). Among these, there were 27 of procedure-related aneurysmal rupture (5.6%), 14 of thrombosis (2.9%), 8 of occlusion of patent vessels due to coil escape (1.7%). Death or severe neurological deficit were seen in 18 cases of procedure-related rupture, 9 cases of thrombosis and 4 cases of coil escape. Procedure-related mortality and morbidity rates for endovascular coiling were calculated to be 2.9% and 3.6% respectively. CONCLUSION: The potential complications associated with shape, size and relationship to parent vessels of each specific cerebral aneurysm must be considered carefully before treatment. In order to reduce complications, proper equipment, knowledge on the hemodynamics and vascular anatomy, and operator's expertise are desired.
Aneurysm*
;
Hemodynamics
;
Humans
;
Intracranial Aneurysm
;
Mortality
;
Neck
;
Parents
;
Retrospective Studies
;
Rupture
;
Thrombosis
;
United Nations
6.Multiple Spinal Intradural Schwannomas in the Absence of Neurofibromatosis Type 2 Manifestations: A Case Report.
Jung Tae KIM ; Jung Nam SUNG ; Bong Jin PARK ; Maeng Ki CHO ; Young Joon KIM
Journal of Korean Neurosurgical Society 2000;29(4):550-554
No abstract available.
Neurilemmoma*
;
Neurofibromatoses*
;
Neurofibromatosis 2*
7.Cotrel-Dubousset instrumentation in the treatment of idiopathic scoliosis.
Se Il SUK ; Choon Ki LEE ; Ki Tack KIM ; Tae Joon CHO
The Journal of the Korean Orthopaedic Association 1991;26(3):660-672
No abstract available.
Scoliosis*
8.A clinical review of femoral abduction osteotomy in Legg-CalvePerthes disease.
Duk Yong LEE ; In Ho CHOI ; Chin Youb CHUNG ; Tae Joon CHO ; In Ho SEONG
The Journal of the Korean Orthopaedic Association 1991;26(2):598-608
No abstract available.
Osteotomy*
9.Temporal and Spatial Expression of Bone Morphogenetic Protein -2 and -4 mRNA in Distraction Osteogenesis and Fracture Healing.
Tae Joon CHO ; In Ho CHOI ; Chin Youb CHUNG ; Su Sung PARK ; Yong Koo PARK
The Journal of the Korean Orthopaedic Association 1998;33(3):595-605
Temporal and spatial expression of bmp-2 and bmp-4 was investigated in distraction osteogenesis and fracture healing models in order to delineate their roles in these new hone formation processes. Distraction osteogenesis was performed on the left tihia diaphyses of Sprague-Dawley rats, and was confirmed by serial radiographs and histologicaJ examination. Total RNA was isolated from the distraction gaps and fracture sites sequentially until the postoperative eighth week, and mRNA expression was quantitated hy competitive reverse transcription-polymerase chain reaction(RT-PCR) using specific primers for bmp-2 and bmp-4. In-situ hybridization was performed on the undemineralized tissue section of distraction osteogenesis group. Both bum-2 and bmp-4 mRNA expression increased during distraction osteogenesis and fracture healing. Increase in bmp-2 mRNA expression was more marked and prolonged in distraction osteogenesis compared with fracture healing, whereas bmp-4 mRNA expression was persistently increased in both groups. In-situ hybridization study revealed that hoth bmp-2 and bmp-4 were expressed at eariy osteohlasts producing osteoid, trabeculae-lining osteoblasts and osteocytes of regenerate bone. Enhanced new bone formation in distraction osteogenesis is associated with prolonged and increased expression of BMPs, especially BMP-2. lnspite of their structural similarity, BMP-2 and BMP-4 appear to have their distinct roles in new hone formation.
Bone Morphogenetic Proteins*
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Diaphyses
;
Fracture Healing*
;
Osteoblasts
;
Osteocytes
;
Osteogenesis
;
Osteogenesis, Distraction*
;
Rats, Sprague-Dawley
;
RNA
;
RNA, Messenger*
10.Correction of kyphotic deformity in ankylosing spondylitis by posterior vertebral body decancellation: a case report.
Sung Joon KIM ; Jae Lim CHO ; Tae Seung KIM ; Hong Ku KANG ; Il Dong SONG
The Journal of the Korean Orthopaedic Association 1991;26(4):1333-1337
No abstract available.
Congenital Abnormalities*
;
Spondylitis, Ankylosing*