OBJECTIVE: The present study was designed to compare Global field Power Measurement and conventional method in P300 determination. METHOD: The subjects were composed of patients(N=20) with schizophrenia by DSM-IV and normal controls(N=20). The auditory event related potential P300 was measured by "oddball paradigm". P300 components were determined by Global Field Power Measurement and conventional method at 5 electrodes(Fz, Cz, Pz, T3, T4). RESULTS: P300 amplitudes of patients were smaller than those of controls across all electrodes and in both methods, but there was no differential power in P300 determination between two methods. Asymmetry of auditory event-related potential P300 was not shown between patients with schizophrenia and normal controls. CONCLUSION: It is implicated that it depends on clinical situations and research purposes what method of P300 determination will be more appropriate for patients with schizophernia.
Diagnostic and Statistical Manual of Mental Disorders ; Electrodes ; Event-Related Potentials, P300 ; Evoked Potentials ; Humans ; Schizophrenia

It has been well known that the incidence of delayed or nonunion of tibial shaft fracture is high and in order to improve methods of treatment and to get satisfactory final results in these fractures, it is important to find out as early as possible whether the fracture is healing normally or not. The fracture healing is closely related to the circulatory conditions at the fracture site, however, in contrast to animal experiments it is impossible to visualize directly the circulatory conditions at the fracture site. There have been many efforts to visualize indirectly these vascular re-establishments through angiography. Kaski(1974) reported a paper concerning osteomedullography of tibial fracture with phlebocompression and noticed 5 types of veins related to the process of healing. We performed 54 cases of osteomedullography in 41 tibial fracture at 3 months after treatment and the following results were obtained: 1. The sinusoidal vein in the proximal fragment was observed most frequently and the next were intra-osseous crossing vein, periosteal callus vein, ascending branch of main efferent vein, and periosteal veins of proximal fragment in decreasig frequency. 2. The rate of positive finding in osteomedullography at 3 months after treatment was lower, and periosteal callus veins were observed more frequently in the group treated with only cast immobilization than in the group treated with plate and screws. 3. In the group treated with compression plate and screws, osteomedullographs were positive in all 3 cases within 3 months after operation and sinusoidal veins in the proximal fragment were visualized in all cases, however periosteal callus vein was not visualized at all. 4. After bone graft, the differentiation of periosteal callus from grafted bone was not easy in plain X-ray film, but osteomedullography was very useful in these cases. Positive findings were noticed in 2~3 months in all cases following bone graft. 5. The authors found that the ideal time of performing osteomedullography was 3 months following treatment. If found to be negative after 4 months following treatment, bone graft was necessary.
Angiography ; Animal Experimentation ; Bony Callus ; Fracture Healing ; Immobilization ; Incidence ; Tibial Fractures ; Transplants ; Veins ; X-Ray Film

No abstract available.

No abstract available.
Necrosis*

No abstract available.

Giant cell tumor of tendon sheath(GCTTS) is a benign mesenchymal lesion composed of cytologically bland mononuclear cells admixed with multinucleated giant cells. Our report describes the clinical and pathologic features of a 36-year-old female's tumor with a two years history over the lateral side of the left little finger, Especially, we could observe the characteristic thre types of cells in an electromicroscopic study, histiocyte-like cells, fibroblast-like cells and multinucleated giant cells. In lmmunohistochemical studies, we demonstrated that the tumor cells of GCTTS exhibit a phenotype consistent with histiocyte differentiated to Langerhan's cell.
Adult ; Fingers ; Giant Cell Tumors* ; Giant Cells* ; Histiocytes ; Humans ; Phenotype ; Tendons*

We reviewed clinically the 56 patients, who had anterior interbody fusion of the cervical spine due to various causes, from 1975 to 1984. The result of the studies are as follows; 1. Inawaisting sign of the grafted level is the one of the most important prognostic factors which indicates the favorable fusion. 2. The mechanism of the inwaisting sign is not confirmed, however plausible explanation is the flexure drift law, which cause the inwaisting phenomena. 3. The time of clinical, radiological union and the appearance of the inwaisting sign of the grafted bone in the fusion of the lower cervical spine are displayed earlier than in the upper cervical spine. 4. Fusion at the one level is obtained one or two weeks earlier than the two level fusion. At the two level fusion, one large bone block operation achieved the earlier bony union than the two separate bone blocks fusion; it could shorten the fusion time by 4 weeks radiologically, although there were no significant difference in clinical aspect and inwaisting sign. 5. In the anterior interbody fusion of the cervical spine, clinical fusion took place in 6–7 weeks, and radiological one in 10-14 weeks after the fusion operation. And it was not influenced by the type of injury or neurological complications. The inwaisting sign appeared from the 4th to 7th week postoperatively. 6. There are no problems in the case of posterior instability initially. The reason is that we have performed the cervical traction and absolute bed rest for 4 to 6 weeks before the anterior interbody fusion in order to take the healing of the poterior ligament complex.
Bed Rest ; Clinical Study ; Humans ; Jurisprudence ; Ligaments ; Spine ; Traction ; Transplants

Multiple myeloma is considered to be the most common primary malignant bone tumor which has the flat bone as a predilection site in old ages. We experienced a case of an unsual multiple myeloma which formed a huge tumor mass on medial end of left clavicle. The tumor mass together with medial half of the clavicle was excised completely. We have discussed the rationale for the excision of the clavicle.
Clavicle ; Multiple Myeloma

No abstract available.
Oxidoreductases*

No abstract available.