Chemonucleolysis is a significant innovation in the treatment of herniated lumbar disc disease. The prodedure is relatively safe and the results are highly acceptable, but in most studies, the failure rate is 20-25%. Computed tomography was performed from January, 1986 to June, 1987 at the Department of Orthopedic Surgery, Yonsei University on six patients with herniated lumbar discs who did not improve with chemonucleolysis. The results of this study are as follows : 1. The herniated lumbar disc remained unchanged in 4 cases and was reduced in 2 cases. 2. In 2 cases of hernia reduced, the development of a diffuse annular bulging was noted and compression of the dural sac unchanged. 3. Chemonucleolysis was carried out at two levels in 2 cases and the herniated lumbar disc was not changed in these cases. 4. Thickening of the ligament flavum was noted in 1 cases. 5. Computed tomography findings after chemonucleolysis were good correlation with the clinical results in failed cases. In the cases not relieved the symptoms over 3–6 months after chemonucleolysis, it is necessary follow up computed tomography to decide the further treatment.
Follow-Up Studies ; Hernia ; Humans ; Intervertebral Disc Chemolysis ; Ligaments ; Orthopedics

No abstract available.
Follow-Up Studies* ; Magnetic Resonance Imaging* ; Radiculopathy*

It has been held that excessive mechanical forces to the osseous and soft tissues of the TMJ result in joint dysfunction. Understanding the stress pattern on TMJ is very important in TMJ research. But, it is very difficult to measure directly the biomechanical stress distribution in the TMJ during functional movement was studied through animal experiment or mathematical model . It was observed and compared the stress distribution occuring in the working and balancing condyle when lower right canine, lower right first molar and lower right second molar were clenched by the three dimensional finite element analysis. Also, stress distribution in the working and balancing condyles were observed and compared when 20 forward and buccal bite forces were applied to the first molar The results were as follows : 1. Stress distribution in the condyles during unilateral clenching of the first molar, second molar, canine showed no difference. In the working condyle, tensile force was concentrated on the lateral aspect of the condylar articular surface and condylar neck. And compressive force was concentrated on the anteromedial and lateral aspect of condyle. In the balancing condyle, tensile and compressive force was concentrated on the lateral aspect of the condylar articular surface and stress transmission to the temporal bone was not observed. 2. When lateral force were applied to the first molar, tensile force were concentrated on the medial aspect of the condylar neck and condylar posterior surface in working and balancing condyle. Compressive force was concentrated on the anteromedial and lateral surface of condyle and stress transmission to the temporal bone was not observed. 3. During unilateral clenching, stress in the working condyle decreased as the occlusal load moved posteriorly while the stress in the balancing condyle increased when lateral forces were applied to the first molar, the incremental amount of stress was greater than vertical load. 4. During unilateral clenching, the average balancing/ working stress ratio was 2.52. There was a greater concentration of stress in the balancing condyle. The ratio increased at the occlusal load moved posteriorly and decreased considerably when lateral forces were applied to the first molar
Animal Experimentation ; Bite Force ; Finite Element Analysis ; Joints ; Mandibular Condyle* ; Models, Theoretical ; Molar ; Neck ; Temporal Bone ; Temporomandibular Joint

No abstract available.
Cartilage ; Rabbits ; Temporomandibular Joint Disc ; Temporomandibular Joint ; Transplants

The number of domestic cases of pandemic H1N1 influenza A was elevated in 2009. The common clinical symptoms associated with H1N1 influenza include respiratory symptoms such as cough, sore throat, rhinorrhea, fever, chills, myalgia, and fatigue. Gastrointestinal symptoms are relatively common. H1N1 influenza A infection brings about neurological symptoms in rare cases. However, there are few reports about H1N1 influenza A infection with neurological manifestations. We recently experienced an H1N1 influenza A patient who presented with disturbed mental status, seizures, and focal changes on brain magnetic resonance imaging, associated with infection.
Brain ; Chills ; Cough ; Encephalitis ; Fatigue ; Fever ; Humans ; Influenza, Human ; Magnetic Resonance Imaging ; Neurologic Manifestations ; Pandemics ; Pharyngitis ; Seizures

Large numbers of reports have shown that thermal injury (TI) causes a wide spectrum of defects in immune response that lead to a high susceptibility to various opportunistic infections. However, it is still a matter of debate whether TI induces Th2 polarization or global impairment in Th1/Th2 response. In this study, TI in a mouse model was induced by exposing shaved dorsal skin to boiling water and cytokine production was analyzed. At day 2 of injury, whole spleen cells and T cells were collected and then stimulated with an anti-CD3 antibody. The levels of cytokine secretion were determined by cytokine ELISA. Production of IFNgamma and IL 4 by whole spleen cells from injured mice were concurrently decreased when compared to those from sham-injured controls. Proportional changes in T, B, and T-subset cells were not accompanied. Using purified T cells devoid of accessory cells (AC), it was shown that those defects resulted primarily from lowered T cell potentials. By using mixed cultures of sham T and TI-AC and vice versa, it was revealed that AC also acted as inhibitor cells in IFNgamma and IL 4 production in less extent. Blockade of glucocorticoid signals rendered the T cells partially resistant to TI-induced inhibition in IFNgamma and but not IL 4 production. These results clearly demonstrate that TI induces overall suppression in Th1 and Th2 response through T cell dysfunction together with the inhibition of AC activity, and that reduction in only IFNgamma but not IL 4, production may be caused, in part, by corticosteroid hormone that is secreted prominently during trauma.
Animals ; Enzyme-Linked Immunosorbent Assay ; Mice ; Opportunistic Infections ; Skin ; Spleen ; T-Lymphocytes ; Water

No abstract available.
Seizures, Febrile*

No abstract available.

No abstract available.

No abstract available.
Adenoids* ; Carcinoma, Adenoid Cystic* ; Lacrimal Apparatus*